What are power relays and how do they function?

Power relays are electromechanical devices that control high-power circuits using a low-power input. They consist of a coil and one or more sets of contacts. When the coil is energized, it creates a magnetic field, causing the contacts to close or open, thereby controlling the flow of electrical power.

How do power relays differ from other types of relays?

Power relays are specialized for handling higher currents and voltages compared to other relays. They are designed to manage heavy loads in industrial applications, making them distinct from signal relays or low-power relays used in electronics.

What should be considered when selecting a power relay for an application?

Consider the voltage and current ratings of the load, the relay's switching capacity, environmental conditions, and the required contact configuration. Also, assess factors like the reliability and lifecycle of the relay to ensure it meets the specific needs of the application.

What are the main applications of power relays?

Power relays are used in various industries for tasks such as controlling motors, heaters, lighting systems, and other high-power devices. They are crucial in automation, machinery, and energy management systems.

What are the voltage and power load capacities of power relays?

The voltage and power load capacities of power relays vary based on their design and intended application. Common voltage ratings range from 12V to 240V, and power load capacities can extend from a few watts to several kilowatts, depending on the relay type and configuration. Always check the datasheet for specific details relevant to the chosen relay.

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Power Relays（Representative Standard：CSA）

Power relays are mainly used to switch high voltage and high power loads of 3 A or higher. They are simple electrical parts comprised of a coil (electromagnet) and switch (contact). Current flows to the coil and generates a magnetic force (electromagnet) to open or close the switch automatically. Two relay types are available; contact relays and non-contact relays. For a power relay, a contact relay where a mechanical operation causes the contacts to touch is appropriate. Contact relays are also highly durable, making them ideal for power relays used for high voltage or high power applications. These relays are mainly used for devices such as factory automation equipment, industrial equipment and household equipment. These electrical parts are required in a wide variety of environments. In response to increasing demand, they have been designed to be smaller, quieter and more power-saving while maintaining their high capacity, and reliability has also been improved.

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Brand	OMRON (7)
CAD	2D 3D
Days to Ship	All Same day 1 Day(s) or Less 6 Day(s) or Less 8 Day(s) or Less

7 items

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Power relay G6D

OMRON

New at MISUMI? Get 20% Discount on your First Purchase. Click to Register Now A compact slim power relay for output applications such as PCs (programmable controllers) and temperature controllers.[Features]・ Floor area reduced by approximately 45% for high-density mounting ( ...Readmore

Volume Discount

Application	Contact Configuration	Latch function	Terminal shape	Contact rated current (minimum value for AC and DC)(A)	Coil rated voltage (DC)(V)	Coil rated voltage (AC)(V)	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)
Power	1a	NA	For Circuit Boards	5	5 ～ 24	-	CSA	12.5	6.5	18.5

From: ₹ 264.00
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Power relay G2RL

OMRON

New at MISUMI? Get 20% Discount on your First Purchase. Click to Register Now A low-profile power relay with a height of just 15.7 mm, enabling it to be incorporated into small-sized equipment. [Features]· 1-pole, 2-pole and high-capacity types are available.· High sensitivity with a power...Readmore

Volume Discount

Application	Contact Configuration	Latch function	Terminal shape	Contact rated current (minimum value for AC and DC)(A)	Coil rated voltage (DC)(V)	Coil rated voltage (AC)(V)	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)
Power	1a ～ 2c	NA	For Circuit Boards	5 ～ 16	5 ～ 24	-	CSA	15.7	29	12.7

From: ₹ 227.00
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Power Relay, G6B

OMRON

New at MISUMI? Get 20% Discount on your First Purchase. Click to Register Now [Features]· A high capacity, highly pressure-resistant sealed structure. Small 1a contact 5 A (8 A), 1a1b, 2a, 2b contact 5 A power types.· Boasts a power consumption of just 98mW and high level of se...Readmore

Volume Discount

Application	Contact Configuration	Latch function	Terminal shape	Contact rated current (minimum value for AC and DC)(A)	Coil rated voltage (DC)(V)	Coil rated voltage (AC)(V)	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)
Power	1a ～ Other	Available / NA	Socket / plug-in / For Circuit Boards	5 ～ 8	5 ～ 24	-	CSA	10 ～ 15	10 ～ 11	20 ～ 20.2

From: ₹ 257.00
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Power relay G2R

OMRON

New at MISUMI? Get 20% Discount on your First Purchase. Click to Register Now [Features]· The best-selling G2R type.· A single pole 10A or two pole 5 A general purpose power relay.· A safety-focused design with a withstand voltage of 5,000V between coil-contacts, and a surge resist...Readmore

Volume Discount

Application	Contact Configuration	Latch function	Terminal shape	Contact rated current (minimum value for AC and DC)(A)	Coil rated voltage (DC)(V)	Coil rated voltage (AC)(V)	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)
Power	1a ～ 2c	NA	For Circuit Boards / Tab Terminal	4 ～ 16	5 ～ 24	100/110 ～ 200/220	CSA	25.5 ～ 29.5	13 ～ 45	13 ～ 45

From: ₹ 222.00
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Power relay G4A

OMRON

New at MISUMI? Get 20% Discount on your First Purchase. Click to Register Now [Features]· A small, single pole power relay with 80A input, energization, and 20A shutoff.· Achieves motor load switching with an input current of 80A, energization, and a shutoff current 20A.· Offers h...Readmore

Application	Contact Configuration	Latch function	Terminal shape	Contact rated current (minimum value for AC and DC)(A)	Coil rated voltage (DC)(V)	Coil rated voltage (AC)(V)	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)
Power	1a	-	For Circuit Boards	20	12	-	CSA	23.5	30.5	16

From: ₹ 353.00
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Terminal Relay - G6B-4CB - Relay for Replacement

OMRON

Replacement Relay for G6B-4CB Terminal Relay

Volume Discount

Application	Contact Configuration	Latch function	Terminal shape	Contact rated current (minimum value for AC and DC)(A)	Coil rated voltage (DC)(V)	Coil rated voltage (AC)(V)	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)
Power	1a	NA	For Circuit Boards	5	24	-	CSA	15	11	20

From: ₹ 361.00
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Terminal Relay - G6B-4□□ND Relay for Replacement

OMRON

Replacement Relay for G6B-4□□ND Terminal Relay

Application	Contact Configuration	Latch function	Terminal shape	Contact rated current (minimum value for AC and DC)(A)	Coil rated voltage (DC)(V)	Coil rated voltage (AC)(V)	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)
Power	1a	NA	For Circuit Boards	8	24	-	CSA	10	10	20

From: ₹ 279.00
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Brand
Product Series
From
Days to Ship
Application
Contact Configuration
Latch function
Terminal shape
Contact rated current (minimum value for AC and DC)(A)
Coil rated voltage (DC)(V)
Coil rated voltage (AC)(V)
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.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
Brand	OMRON	OMRON	OMRON	OMRON	OMRON	OMRON	OMRON
Product Series	Power relay G6D	Power relay G2RL	Power Relay, G6B	Power relay G2R	Power relay G4A	Terminal Relay - G6B-4CB - Relay for Replacement	Terminal Relay - G6B-4□□ND Relay for Replacement
From	₹ 264.00	₹ 227.00	₹ 257.00	₹ 222.00	₹ 353.00	₹ 361.00	₹ 279.00
Days to Ship	Same day or more	Same day	Same day or more	Same day	Same day	Same day	Same day
Application	Power	Power	Power	Power	Power	Power	Power
Contact Configuration	1a	1a ～ 2c	1a ～ Other	1a ～ 2c	1a	1a	1a
Latch function	NA	NA	Available / NA	NA	-	NA	NA
Terminal shape	For Circuit Boards	For Circuit Boards	Socket / plug-in / For Circuit Boards	For Circuit Boards / Tab Terminal	For Circuit Boards	For Circuit Boards	For Circuit Boards
Contact rated current (minimum value for AC and DC)(A)	5	5 ～ 16	5 ～ 8	4 ～ 16	20	5	8
Coil rated voltage (DC)(V)	5 ～ 24	5 ～ 24	5 ～ 24	5 ～ 24	12	24	24
Coil rated voltage (AC)(V)	-	-	-	100/110 ～ 200/220	-	-	-
Representative Standard	CSA	CSA	CSA	CSA	CSA	CSA	CSA
Dimension height(mm)	12.5	15.7	10 ～ 15	25.5 ～ 29.5	23.5	15	10
Dimension width(mm)	6.5	29	10 ～ 11	13 ～ 45	30.5	11	10
Dimension depth(mm)	18.5	12.7	20 ～ 20.2	13 ～ 45	16	20	20


Brand
Product Series

	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
Brand	OMRON	OMRON	OMRON	OMRON	OMRON	OMRON	OMRON
Product Series	Power relay G6D	Power relay G2RL	Power Relay, G6B	Power relay G2R	Power relay G4A	Terminal Relay - G6B-4CB - Relay for Replacement	Terminal Relay - G6B-4□□ND Relay for Replacement

Configure

Specification/Dimensions

Application
- Power
Clear

Contact Configuration
1a

1c

2a

2b

2c

Other
Clear

Latch function
- Available
- NA
Clear

Terminal shape
- Socket / plug-in
- For Circuit Boards
- Tab Terminal
Clear

Contact rated current (minimum value for AC and DC)(A)
3

4

5

8

10

15

16

20
Clear

Coil rated voltage (DC)(V)
5

12

24
Clear

Coil rated voltage (AC)(V)
100/110

200/220
Clear

Representative Standard
- UL
- TUV
- CSA
Clear

Dimension height(mm)
10

11

12.5

15

15.7

15.8

19

23.5

25.5

26.8

29.5

30.5
Clear

Dimension width(mm)
6.5

10

11

13

13.5

14

20

20.3

22

22.5

28.5

29

30.5

45
Clear

Dimension depth(mm)
10

10.3

12.7

13

13.5

14

15

16

16.5

18.5

19.5

20

20.2

29

45
Clear

Related Categories to Power Relays

FAQ Power Relays

Question: What are power relays and how do they function?: Answer: Power relays are electromechanical devices that control high-power circuits using a low-power input. They consist of a coil and one or more sets of contacts. When the coil is energized, it creates a magnetic field, causing the contacts to close or open, thereby controlling the flow of electrical power.
Question: How do power relays differ from other types of relays?: Answer: Power relays are specialized for handling higher currents and voltages compared to other relays. They are designed to manage heavy loads in industrial applications, making them distinct from signal relays or low-power relays used in electronics.
Question: What should be considered when selecting a power relay for an application?: Answer: Consider the voltage and current ratings of the load, the relay's switching capacity, environmental conditions, and the required contact configuration. Also, assess factors like the reliability and lifecycle of the relay to ensure it meets the specific needs of the application.
Question: What are the main applications of power relays?: Answer: Power relays are used in various industries for tasks such as controlling motors, heaters, lighting systems, and other high-power devices. They are crucial in automation, machinery, and energy management systems.
Question: What are the voltage and power load capacities of power relays?: Answer: The voltage and power load capacities of power relays vary based on their design and intended application. Common voltage ratings range from 12V to 240V, and power load capacities can extend from a few watts to several kilowatts, depending on the relay type and configuration. Always check the datasheet for specific details relevant to the chosen relay.