(!)NOTE : Windows 7 users won’t be able to use some latest features of eCatalog/WOS since Microsoft is ending support for Windows 7 on 14 Jan, 2020. Please upgrade your system for uninterrupted services.
- Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.
OMRON Industrial Relays
Brand |
|
|---|---|
| CAD |
|
| Days to Ship |
|
17 items
- Sort By
-
You can add up to 6 items per a category to the compare list.
OMRON
[Features]
· Lead-use eliminated, safe for environment.
·With different colors for AC and DC coil tapes, AC and DC specifications are easily identified.
·Type MY(S) with a convenient latching lever for circuit check is now also available.
·Wiring labor-hours can be shortened by 60% if combined with push-in plus socket Type PYF-□-PU (according to the manufacturer's measured data).
·Terminal Shape: Socket / plug-in terminal, PCB terminal.
[Applications]
·Widely applicable to almost all types of electrical machines and devices.- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 1.5 ～ 125 2c / 3c / 4c Socket / plug-in / For Circuit Boards 1 ～ 10 6 ～ 220/240 Power Available / NA CE / UL / TUV / CSA 35 ～ 53 21.5 ～ 22.5 28 ～ 44 From: ₹ 468.00 Days to Ship: Same day or more 
Same day or more
-
You can add up to 6 items per a category to the compare list.
OMRON
A cost-effective industrial-use relay with a low power consumption.
[Features]
·Type MM power relay with a mechanical lock latching system.
·Mechanically holds the operations.
· Quick operation due to pulse transmitted electrical power.
·Wide operating temperature range from -10°C to +55°C.
·Models compliant with auxiliary power relays (JEC-174D) are also available.
[Applications]
·Ideal for motor and control operation switching.- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 24 ～ 200/220 2c / 3c / Other Socket / plug-in / Screw Fastening 4 ～ 7 100/(110) ～ 220 Power Available - 119 ～ 123 54.5 ～ 72.5 80.5 From: ₹ 2,768.00 Days to Ship: Same day or more
Same day or more
-
You can add up to 6 items per a category to the compare list.
OMRON
Small general purpose power switching relay for industrial use.
[Features]
·A high-capacity version of Type MY, which is available in a wide variety of types including ones with operation indicator lights, surge absorbing elements, etc.
· The contact structure is 1C, 2C, 3C and 4C.
· The standard product is compliant with international UL, CSA, and SEV standards and the Product Safety of Electrical Appliances and Materials Act of Japan.
· Equipped with an arc barrier for arc interruption. Withstand voltages up to 2,000 V.
· New built-in diode and built-in CR circuit models are now available as part of the product series. The lineup also includes the types that are compliant with the international LR and VDE standards.
[Applications]
·Various control equipment at production sites where high reliability is required.
· Used not only for electric, water, gas and other control systems, but also for most types of electrical machinery and equipment.- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 12 ～ 125 1c / 2c / 3c / 4c Socket / plug-in / For Circuit Boards 7 ～ 15 24 ～ 220/240 Power NA UL / TUV / CSA 35.5 ～ 53 21.5 ～ 41.5 28 ～ 44 From: ₹ 479.00 Days to Ship: Same day or more
Same day or more
-
You can add up to 6 items per a category to the compare list.
OMRON
Safety relay unit G9SA
[Features]
· Small size, with an abundant series.
· 45 mm width, with an abundant variety of 3-pole. 5-pole, 3-pole + off delay 2-pole, 2 hand controllers.
· We also offer 17.5 mm width 3-pole, off delay 3-pole expansion units.
· Expansion units can be connected with a single action.
· Off delay types can be set at 15 different time levels.
· Certified ENISO13849-1 (PLe/Safety Category 4).
· Can be DIN rail mounted or screw mounted.- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) - 2a / Other Screw Fastening - - Other NA CE / UL / TUV / CCC / CSA 76 ～ 100 18 ～ 45 111 ～ 112 From: ₹ 7,844.00 Days to Ship: Same day or more
Same day or more
-
You can add up to 6 items per a category to the compare list.
OMRON
An octal pin type power relay available in a large number of variations.
[Features]
·Enclosed models have the common AC4 rating (100/110 V AC, 50/60 Hz, 200/220 V AC, 50/60 Hz)
·Easy mounting, wiring and handling
·High mechanical durability of 5,000,000 cycles or more
·Offers an extensive product lineup; standard type, enclosed type, special contact model, twin contact type, double-winding latching type, etc.
[Applications]
·Applicable to various control equipment at production sites where high reliability is required, and also applicable to control systems for electricity, water, gas, etc.
·Widely applicable to almost all types of electrical machines and devices- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 12 ～ 500 2c / 3c Socket / plug-in 3 ～ 5 24 ～ 220 Power NA - 52.5 34.5 ～ 36.5 34.5 ～ 36.5 From: ₹ 989.00 Days to Ship: Same day or more
Same day or more
-
You can add up to 6 items per a category to the compare list.
OMRON
Power relay with stable contact reliability and high durability.
[Features]
·Easy mounting, wiring and handling
·Available in a large selection of models including various forms of contacts, direct current load switching and surface-mount type
·High durability with a mechanical life of 5,000,000 cycles and electrical life of 500,000 cycles (under rated load)
·Also available are models with built-in diodes and models compliant with auxiliary power relays (JEC-174D)
[Applications]
·Used in various fields to improve the reliability and for miniaturization of equipment- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 24 ～ 200/220 2c / 3c / 4c Socket / plug-in / Solder / Screw Fastening 5 ～ 15 100/110 ～ 220 Power NA - 53.5 ～ 81.5 40 ～ 80 56 ～ 80.5 From: ₹ 1,685.00 Days to Ship: Same day or more
Same day or more
-
You can add up to 6 items per a category to the compare list.
Mini Power Relay Plug-In Terminal Type G2R-□-S
OMRON
1 pole 10 A and 2 pole 5 A general purpose slim type miniature power relays.
[Features]
· Cadmium-free, lead-free.
·1-position for 10 A and 2-position for 5 A general-purpose power relay.
·Safety-oriented design with a withstand voltage of 5,000 V between coil to contacts and a surge resistant voltage of 10,000 V.
·With different colors for AC and DC coil tapes, AC and DC specifications are easily identified.
·Includes a convenient latching lever for circuit check (Type G2R-□-S[S]).
[Applications]
·Mainly used for control panels, industrial machines, etc.- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 5 ～ 100 1c / 2c Socket / plug-in 5 ～ 10 24 ～ 200/220 Power Available / NA CE / UL / CSA 28 ～ 35.5 13 29 From: ₹ 210.00 Days to Ship: Same day or more
Same day or more
-
You can add up to 6 items per a category to the compare list.
OMRON
A Value Design for Panel product that increases the value of your control panels
Global standard size, low profile slim I/O relay with width 6.2 mm
■ Features
· Realizes about 25% lower profile than conventional products, contributing to further miniaturization of the control panel.
· Realizes switching ability with one pole 6 A slim shape
· Micro load products for one pole 50 mA using gold-plated contacts for micro load switching also available.
· Since G2RV is a transparent case, confirming the state of the contact with the naked eye is possible,
and easy to confirm abnormality on-site (installed location).
· Screw terminal is also stocked to meet screw type needs.
· Mounted relay uses plug-in terminals that are difficult to bend when exchanging.Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 24 1c Screw Fastening / Other 2 - Other NA CE / UL / CUL / TUV / CSA 88.87 6.2 78 From: ₹ 1,359.26 Days to Ship: 5 Day(s) or more
5 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
Contact Annunciator Relay Unit MYA
OMRON
[Features]
· Safety protective equipment optimized for centralized alarm system for all types of control circuits.
· Model MYA combines with model MY4 mini power relay to provide alarm functions for all types.
· In addition to being a small, plug-in type that saves space and allows for simple maintenance, there are 4 general varieties, so you can select the most appropriate for your needs.
· Lloyd's certified product (model MYM-LA12, -LB12 not included).- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 24 ～ 100/110 - Socket / plug-in 3 100/110 ～ 200/220 - NA - 50 ～ 51 38 ～ 39 65 ～ 84.5 From: ₹ 2,585.00 Days to Ship: Same day
Same day
-
You can add up to 6 items per a category to the compare list.
OMRON
[Features]
· W29 × D10 × H32 mm I/O slim relay.
· For input (DC, AC).
· Slim type for output (1a, 1b, 1c).
· Output-use type has a high durability of 1 million uses (DC24V5A).
· Comes with operation display mechanism for checking operation (1a only).
· Certified by overseas standard UL, CSA (products marked with * on category chart).Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 12 ～ 24 1a / 1b Socket / plug-in 1 ～ 5 100/110 ～ 200/220 Power NA UL / CSA 32 33.5 10 From: ₹ 340.00 Days to Ship: Same day
Same day
-
You can add up to 6 items per a category to the compare list.
OMRON
A power relay with a high capacity and high dielectric strength that can handle momentary voltage drops.
[Features]
·No contact chattering for momentary voltage drops up to 50% of the rated voltage.
·A wide range coil that covers 100 V AC type from 100 to 120 V AC 50/60 Hz or 200 V AC type from 200 to 240 V AC 50/60 Hz with a single coil.
· High capacity that is particularly able to manage inductive loads with powerful force.
·All insulating materials are flame retardant and comply with UL94 V-0 standards.
· Comes in a wide variety of types including tab terminals, screw terminals, PCB terminals, etc. Surface connection sockets are also available.
·Standard products compliant with UL, CSA, and TÜV and meet the IEC950 standards.
· Safe design with 3 mm contact gap.
[Applications]
·Widely applicable to factory automation as well as non-factory automation equipment.- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 12 ～ 24 1a / 2a For Circuit Boards / Tab Terminal / Screw Fastening 20 ～ 30 100/120 ～ 200/240 Power - - 47 ～ 55 52.5 ～ 68.5 33.5 ～ 36.5 From: ₹ 681.00 Days to Ship: Same day or more
Same day or more
-
You can add up to 6 items per a category to the compare list.
Reverse Rotation Stop Relay APR-S
OMRON
Reverse rotation prevention relay APR-S
[Features]
· Voltage detection method three-phase motor reverse rotation prevention relay.
· Relay that prevents reverse rotation resulting from erroneous wiring.
· When powered on, it distinguishes between positive-phase, reverse, and reverse-phase.
· Magnet contact is prevented.
· With the wire connection method, open phase input is also prevented.
· Small plug-in type, with no adjustment needed.
· Because of the voltage detection method, it can be used irrespective of the load current.- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) - 1c Socket / plug-in - - Other NA - 48 48 63.7 From: ₹ 3,953.00 Days to Ship: 8 Day(s)
8 Day(s)
-
You can add up to 6 items per a category to the compare list.
OMRON
[Features]
· Small mechanical lock style latching relay with manual button.
· Small at height 71 mm, width 42.5 mm, depth 48.5 mm.
· Also lightweight at just 175 g.
· Setting and resetting responds quickly with pulse transmission.
· Contacts are gold-plated for excellent connection reliability.
· For socket, use the manufacturer's model PTF14A (model is LY4 for relay).- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 24 ～ 110 Other Socket / plug-in 3 100 ～ 200 Power Available - 71 42.5 51.5 From: ₹ 3,084.00 Days to Ship: Same day
Same day
-
You can add up to 6 items per a category to the compare list.
OMRON
A power relay with a high capacity and high dielectric strength that can handle momentary voltage drops.
[Features]
·Wiring work is quicker than conventional screw terminals with the new push-in plus terminal block sockets now available in the product series (Wiring labor-hours are approx. 60% shorter than traditional screw tightening terminals.).
·Relay with forcibly guided contacts (EN/IEC 61810-3 VDE certified).
·Supports the CE marking of machinery (Machine Directive).
·Helps avoid hazardous machine status when used as part of an interlocking circuit.
·Available in 4-position and 6-position.
·Terminal arrangement simplifies PWB pattern design.
· Reinforced insulation between inputs and outputs. Reinforced insulation between some poles of different polarity.
[Applications]
·Helps avoid hazardous machine status when used as part of an interlocking circuit.Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 24 Other For Circuit Boards 6 - Other NA UL / CSA 24 40 13 From: ₹ 1,446.06 Days to Ship: 5 Day(s) or more
5 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
OMRON
[Features]
· Safety rail for safety light curtain F3SJ-E. G7S.Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 24 Other Socket / plug-in 6 - Other NA UL / CSA 37 22.5 58 From: ₹ 1,398.00 Days to Ship: Same day or more
Same day or more
-
You can add up to 6 items per a category to the compare list.
OMRON
Latching relay suitable for memory circuits and signal transduction circuits.
[Features]
· Due to use of special magnetic materials, changes over time are few and life span is long.
·High durability with little change in characteristics such as contact follow and contact pressure.
·Superior vibration resistance and impact resistance.
· Viewing operation status is easy with operation display mechanism.
· Identical external shape as model MK small power relay.
[Applications]
·Widely applicable to almost all types of electrical machines and devices such as control systems for electricity, water, gas, etc.- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 12 ～ 110 2c Socket / plug-in 5 24 ～ 240 Power Available - 52.5 34.5 34.5 From: ₹ 1,881.00 Days to Ship: Same day or more
Same day or more
-
You can add up to 6 items per a category to the compare list.
OMRON
[Features]
· Alternate switching operation due to unique ratchet structure.
· With each pulse, alternate switching to each contact of the 2 poles is carried out.
· Optimal for alternate operation, switching operation of motors, etc.
· Contact switching carried out due to unique ratchet structure.
· Clears voltage resistance AC2, 000V.- Volume Discount
Coil rated voltage (DC)(V) Contact Configuration Terminal shape Contact rated current (minimum value for AC and DC)(A) Coil rated voltage (AC)(V) Application Latch function Representative Standard Dimension height(mm) Dimension width(mm) Dimension depth(mm) 12 ～ 100 2c Socket / plug-in 5 24 ～ 220 - Available - 80 63.5 92.5 From: ₹ 2,897.00 Days to Ship: Same day or more
Same day or more
| Brand |
|---|
| Product Series |
| From |
| Days to Ship |
| Coil rated voltage (DC)(V) |
| Contact Configuration |
| Terminal shape |
| Contact rated current (minimum value for AC and DC)(A) |
| Coil rated voltage (AC)(V) |
| Application |
| Latch function |
| Representative Standard |
| Dimension height(mm) |
| Dimension width(mm) |
| Dimension depth(mm) |
You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | |
| Brand | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON |
| Product Series | |||||||||||||||||
| From | ₹ 468.00- | ₹ 2,768.00- | ₹ 479.00- | ₹ 7,844.00- | ₹ 989.00- | ₹ 1,685.00- | ₹ 210.00- | ₹ 1,359.26- | ₹ 2,585.00- | ₹ 340.00- | ₹ 681.00- | ₹ 3,953.00 | ₹ 3,084.00- | ₹ 1,446.06- | ₹ 1,398.00- | ₹ 1,881.00- | ₹ 2,897.00- |
| Days to Ship | Same day or more | Same day or more | Same day or more | Same day or more | Same day or more | Same day or more | Same day or more | 5 Day(s) or more | Same day | Same day | Same day or more | 8 Day(s) | Same day | 5 Day(s) or more | Same day or more | Same day or more | Same day or more |
| Coil rated voltage (DC)(V) | 1.5 ～ 125 | 24 ～ 200/220 | 12 ～ 125 | - | 12 ～ 500 | 24 ～ 200/220 | 5 ～ 100 | 24 | 24 ～ 100/110 | 12 ～ 24 | 12 ～ 24 | - | 24 ～ 110 | 24 | 24 | 12 ～ 110 | 12 ～ 100 |
| Contact Configuration | 2c / 3c / 4c | 2c / 3c / Other | 1c / 2c / 3c / 4c | 2a / Other | 2c / 3c | 2c / 3c / 4c | 1c / 2c | 1c | - | 1a / 1b | 1a / 2a | 1c | Other | Other | Other | 2c | 2c |
| Terminal shape | Socket / plug-in / For Circuit Boards | Socket / plug-in / Screw Fastening | Socket / plug-in / For Circuit Boards | Screw Fastening | Socket / plug-in | Socket / plug-in / Solder / Screw Fastening | Socket / plug-in | Screw Fastening / Other | Socket / plug-in | Socket / plug-in | For Circuit Boards / Tab Terminal / Screw Fastening | Socket / plug-in | Socket / plug-in | For Circuit Boards | Socket / plug-in | Socket / plug-in | Socket / plug-in |
| Contact rated current (minimum value for AC and DC)(A) | 1 ～ 10 | 4 ～ 7 | 7 ～ 15 | - | 3 ～ 5 | 5 ～ 15 | 5 ～ 10 | 2 | 3 | 1 ～ 5 | 20 ～ 30 | - | 3 | 6 | 6 | 5 | 5 |
| Coil rated voltage (AC)(V) | 6 ～ 220/240 | 100/(110) ～ 220 | 24 ～ 220/240 | - | 24 ～ 220 | 100/110 ～ 220 | 24 ～ 200/220 | - | 100/110 ～ 200/220 | 100/110 ～ 200/220 | 100/120 ～ 200/240 | - | 100 ～ 200 | - | - | 24 ～ 240 | 24 ～ 220 |
| Application | Power | Power | Power | Other | Power | Power | Power | Other | - | Power | Power | Other | Power | Other | Other | Power | - |
| Latch function | Available / NA | Available | NA | NA | NA | NA | Available / NA | NA | NA | NA | - | NA | Available | NA | NA | Available | Available |
| Representative Standard | CE / UL / TUV / CSA | - | UL / TUV / CSA | CE / UL / TUV / CCC / CSA | - | - | CE / UL / CSA | CE / UL / CUL / TUV / CSA | - | UL / CSA | - | - | - | UL / CSA | UL / CSA | - | - |
| Dimension height(mm) | 35 ～ 53 | 119 ～ 123 | 35.5 ～ 53 | 76 ～ 100 | 52.5 | 53.5 ～ 81.5 | 28 ～ 35.5 | 88.87 | 50 ～ 51 | 32 | 47 ～ 55 | 48 | 71 | 24 | 37 | 52.5 | 80 |
| Dimension width(mm) | 21.5 ～ 22.5 | 54.5 ～ 72.5 | 21.5 ～ 41.5 | 18 ～ 45 | 34.5 ～ 36.5 | 40 ～ 80 | 13 | 6.2 | 38 ～ 39 | 33.5 | 52.5 ～ 68.5 | 48 | 42.5 | 40 | 22.5 | 34.5 | 63.5 |
| Dimension depth(mm) | 28 ～ 44 | 80.5 | 28 ～ 44 | 111 ～ 112 | 34.5 ～ 36.5 | 56 ～ 80.5 | 29 | 78 | 65 ～ 84.5 | 10 | 33.5 ～ 36.5 | 63.7 | 51.5 | 13 | 58 | 34.5 | 92.5 |
Loading...
Configure
Specification/Dimensions
-
Coil rated voltage (DC)(V)
-
Contact Configuration
-
Terminal shape
-
Contact rated current (minimum value for AC and DC)(A)
-
Coil rated voltage (AC)(V)
-
Application
-
Latch function
-
Representative Standard
-
Dimension height(mm)
-
Dimension width(mm)
-
Dimension depth(mm)
Narrow search by specifying Manufacturer
-
- OMRON (17)
- PANASONIC (3)
- WEIDMULLER (2)
- PATLITE (KASUGA) (1)
Related Categories to Industrial Relays
FAQ Industrial Relays
- Question: How many types of relays (industrial relays)?
- Answer: There are various types of relays, and they are classified into different categories according to their properties.
Based On Operation Principles (4 types)
1.1 Electrothermal Relay, an electrothermal relay is made up of a bimetallic (made up of two metals having different thermal expansion coefficients) strip.
1.2 Electromechanical relays This type of relay uses electrical power to move the electromagnetic coil. to control the movement of the contact.
1.3 Solid State Relay, SSR relay is made up of semiconductors instead of mechanical parts and it works on isolating the low voltage circuit from the high voltage circuit using an optocoupler.
1.4 Hybrid Relay, Hybrid relays are made using both SSR and EMR relays. As we know that the SSR wastes power in form of heat and EMR has a contact arcing problem. The hybrid relay uses both SSR and EMR to overcome their disadvantages.
Based on Poles and Throw (4 types)
2.1 SPST (single pole single throw) relay
The single pole means that it can control only one circuit while the single throw means its pole has only one position in which it can conduct.
2.2 SPDT (single pole double throw) relay
The single pole means it can control only one circuit at a time. The double throw means its pole has two positions in which it can conduct.
2.3 DPST (double pole single throw) relay
The double pole means it can control two completely isolated individual circuits. The single throw means that each pole has one position in which it can conduct.
2.4 DPDT (double pole double throw) relay
The double pole means it can control two circuits while the double throw means each pole can conduct in two separate positions. - Question: What is the Operation principle and connection method of relays (industrial relays)?
- Answer: A relay is an electrical switch that controls (switches on and off) a high-voltage circuit using a low-voltage source. A relay completely isolates the low-voltage circuit from the high-voltage circuit. A relay connection is a separate pin terminal to be 2 types, a control terminal, and a contact terminal. The control terminal is used for control status On/Off of the relay. Whereas the contact pin terminal is used to transmit electricity from the supply side to the device.
- Question: What is a Solid-State Relay?
- Answer: A Solid-State Relay (SSR) is a relay that does not have a moving contact. So, A Solid-State Relay (SSR) have long lifetime and able to use higher frequency operation. In terms of operation, SSRs are not very different from mechanical relays that have moving contacts. SSRs, however, employ semiconductor switching elements, such as thyristors, triacs, diodes, and transistors.
- Question: How to use a relay in the industry?
- Answer: A relay is a switch that is used to open or close a circuit. It controls the flow of electricity to create the desired result. Most industrial controls are essentially switches but of a more complex nature. They are usually associated with the control of electric motors and systems. Industrial controls include devices such as motor starters, contactors, control centers, and programmable logic controllers.
- Question: Why are Relays used in PLC?
- Answer: Relays are used to isolate one voltage level from another. A PLC may be used to control the operation of a medium-voltage device, perhaps 2,300V or 4,160V. A relay is used to energize the starter, which, in turn, switches the motor voltage while the PLC controls the relay. Wired to provide a control sequence, relays may also be used for simple control schemes where a PLC would prove uneconomical. Troubleshooting relays can be handled in short order, without having to return to the maintenance shop for the computer necessary to analyze the control sequence within the PLC.
- Question: Relay is AC or DC?
- Answer: Relay can be used both AC and DC, depend on their construction and usage. Which is mean current type is using to control coil of relay. The coil resistance of the AC and DC relay for the same voltage is different. The resistance of the AC coil is less as compared to the DC coil. The AC relay/contactor coil offers reactance when AC supply is applied across it. The inductive reactance of the AC coil offers more impedance and thus it limits the current.
- Question: What is the role of relays in electrical circuits?
- Answer: Relays are switches in electrical circuits that use a small electrical signal to control a larger one. They act like a bridge between two circuits, allowing a low-power signal to turn on or off a high-power device. This makes them crucial for tasks like turning on lights, motors, or appliances, and for safety by isolating circuits or controlling heavy loads with smaller switches. Relays help manage electricity in various applications, ensuring efficient and safe operation.
- Question: Relay vs. Switch: What's the difference?
- Answer: Relays and switches both control electrical circuits, but they work differently. A switch physically opens or closes a circuit when manually toggled. In contrast, a relay is an electrically operated switch. It uses a small electrical signal to control the opening or closing of a separate circuit. Relays are useful for remote or automated control and can handle higher power loads.
- Question: How can I troubleshoot relay issues?
- Answer: Troubleshoot of relay typically diagnose by following item.
• Check power supply: Ensure the relay is getting the correct voltage.
• Test the control signal: Confirm the signal activating the relay is working.
• Inspect connections: Look for loose or damaged wires.
• Listen for clicks: Relays should make a clicking sound when they switch.
• Swap relays: Try replacing with a known-working relay.
• Test with a multimeter: Measure continuity or resistance to diagnose problems.
• Check for mechanical issues: Look for stuck or worn-out relay components.
• Consult a professional if needed. - Question: How to choose the right relay for my work project?
- Answer: Suitable relay can be select by consider following factor.
• Identify load requirements: Determine voltage and current needs.
• Relay type: Choose between electromechanical or solid-state based on durability and switching speed.
• Coil voltage: Match relay coil voltage to your control circuit.
• Consider environmental factors: Ensure the relay can handle temperature, humidity, and other conditions.
• Seek expert advice if unsure about specific requirements.
How can we improve?
How can we improve?
Thank you for your time.
Your feedback is essential for our continuous improvement
Privacy Policy
Thank you for your cooperation.
Thank you for your time.
Your feedback is essential for our continuous improvement
Please use the inquiry form.
Privacy Policy