Omron Power & Signal Relays 2,400+

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Part	Manufacturer	Relay Type	Mounting Feature	Relay Action	Relay Function	Coil or Input Supply Type	Reference Standard	Maximum Contact AC Rating (R Load)	Dielectric Strength Between Open Contacts	Relay Form	Operate Time	Electrical Life	Maximum Contact DC Power Rating (R Load)	Release Time	Insulation Resistance	Coil Power (mW)	Packing Method	Body Length/Diameter	Body Width	Coil Resistance	Sealing	Weight	Maximum AC Coil Current	No. of Terminals	Physical Dimension	Body Height	Dielectric Strength Between Coil & Contacts	Maximum Contact DC Rating (R Load)	Maximum Operating Temperature	Maximum AC Contact Current	Maximum DC Coil Current	Maximum AC Coil Voltage	Maximum Contact AC Rating (I Load)	Minimum Operating Temperature	DC Coil Release Voltage	Maximum DC Contact Current	Termination Type	Nominal Coil Voltage	DC Coil Operate Voltage	Manufacturer Series	Contact Resistance	Input Switching Control Type	End Contact Material	PCB Hole Count	Maximum DC Contact Voltage	Additional Features	Maximum AC Contact Voltage	Terminal Length	Maximum DC Coil Voltage	Maximum Contact AC Power Rating (R Load)	Contact or Output Supply Type
G2R-2A4-AC200/220	Omron	Power/Signal Relay																				17 g
G6RN-1-CDM48VDC	Omron	Power/Signal Relay	Through Hole-Straight Mount	Momentary	SPDT	DC	CSA; UL; VDE	8A@250VAC			6 ms	100000 Cycle(s)		3 ms		250 mW		1.134 in (28.8 mm)	10.5 in (266.7 mm)	9.21 kΩ					1.134 x 0.413 x 0.602 in (28.8 x 10.5 x 15.3 mm)	0.602 in (15.3 mm)		5A@30VDC	85 °C (185 °F)	8 A	5 mA			-40 °C (-40 °F)	4.8 V	5 A	Solder		33.6 V						30 V		250 V		48 V		AC/DC
G2R-2A-DC110	Omron	Power/Signal Relay	Through Hole-Straight Mount	Momentary	DPST	DC	CSA; SEMKO; TUV; UL; VDE	5A@250VAC			15 ms			5 ms		530 mW		1.142 in (29 mm)	13 in (330.2 mm)	22.9 kΩ		17 g			1.142 x 0.512 x 1.004 in (29 x 13 x 25.5 mm)	1.004 in (25.5 mm)		5A@30VDC	70 °C (158 °F)	5 A	5 mA			-40 °C (-40 °F)	16.5 V	5 A	Solder		77 V						30 V		250 V		110 V		AC/DC
G5CA-1A-EDC5	Omron	Power/Signal Relay	Through Hole-Straight Mount	Momentary	SPST	DC	CQC; CSA; TUV; UL	15A@250VAC		1 Form A	10 ms	100000 Cycle(s)		10 ms	1 GΩ	200 mW	Tube	0.866 in (22 mm)	16 in (406.4 mm)	125 Ω	RT2; RT3			4	0.866 x 0.63 x 0.433 in (22 x 16 x 11 mm)	0.433 in (11 mm)		15A@125VDC	70 °C (158 °F)		40 mA			-25 °C (-13 °F)	500 mV	15 A	Solder	5 V	3.75 V		30 mΩ		Silver Alloy		125 V		250 V	0.1378 in (3.5 mm)	6.5 V		AC/DC
G6C-1117C-US-DC3	Omron	Power/Signal Relay																																						G6C
MKS3PINAC220	Omron	Power/Signal Relay	Socket Mount	Momentary	3PDT	AC	CE; IEC; TUV; UL	10A@250VAC			20 ms	100000 Cycle(s)		20 ms		2.7 W		1.358 in (34.5 mm)	34.5 in (876.3 mm)	3.55 kΩ			12 mA		1.358 x 1.358 x 2.067 in (34.5 x 34.5 x 52.5 mm)	2.067 in (52.5 mm)		10A@250VDC	60 °C (140 °F)	10 A		220 V		-25 °C (-13 °F)		10 A	Snap-On			MK-S					250 V	Coil Operate Voltage (AC): 176 V; Coil Release Voltage (AC): 55 V	250 V				AC/DC
LY1S-DC48	Omron	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC	CSA; LR; SEMKO; SEV; UL; VDE	15A@110VAC			25 ms			25 ms		900 mW		1.73 in (43.94 mm)	22.6 in (574.04 mm)	2.6 kΩ					1.73 x 0.89 x 1.4 in (43.94 x 22.6 x 35.56 mm)	1.4 in (35.56 mm)		15A@24VDC	70 °C (158 °F)	15 A	19 mA			-40 °C (-40 °F)	4.8 V	15 A	Solder		38.4 V						24 V		110 V		48 V		AC/DC
MKS2PN-V-2AC24	Omron	Power/Signal Relay	Socket Mount	Momentary	DPDT	AC	CE; IEC; TUV; UL	10A@250VAC			20 ms	100000 Cycle(s)		20 ms		2.7 W		1.358 in (34.5 mm)	34.5 in (876.3 mm)	48.4 Ω			110 mA		1.358 x 1.358 x 2.067 in (34.5 x 34.5 x 52.5 mm)	2.067 in (52.5 mm)		10A@250VDC	60 °C (140 °F)	10 A		24 V		-25 °C (-13 °F)		10 A	Snap-On			MK-S					250 V	Coil Operate Voltage (AC): 19.2 V, Coil Release Voltage (AC): 6 V	250 V				AC/DC
MKS2PN1-2DC100	Omron	Power/Signal Relay	Socket Mount	Momentary	DPDT	DC	CE; IEC; TUV; UL	10A@250VAC			30 ms	100000 Cycle(s)		20 ms		1.4 W		1.358 in (34.5 mm)	34.5 in (876.3 mm)	7.39 kΩ					1.358 x 1.358 x 2.067 in (34.5 x 34.5 x 52.5 mm)	2.067 in (52.5 mm)		10A@250VDC	60 °C (140 °F)	10 A	14 mA			-25 °C (-13 °F)	15 V	10 A	Snap-On		80 V						250 V		250 V		100 V		AC/DC
G2R-1A-ZDC48	Omron	Power/Signal Relay							1 kVrms													17 g					5 kVrms
G2RK-1A	Omron	Power/Signal Relay																				17 g
G6BU-1114C-US-DC12	Omron	Power/Signal Relay
G6C-1117P-USDC5V	Omron
G4W-11123T-US-TV8-Z12VDC	Omron	Power/Signal Relay	Panel Mount	Momentary	SPST	DC	CSA; SEMKO; UL; VDE	15A@250VAC			23 ms	100000 Cycle(s)		8 ms		800 mW		1.496 in (38 mm)	20 in (508 mm)	180 Ω					1.496 x 0.787 x 1.22 in (38 x 20 x 31 mm)	1.22 in (31 mm)		15A@125VDC	55 °C (131 °F)	15 A	67 mA			-25 °C (-13 °F)	1.2 V	15 A	Quick Connect		9.6 V	G4W					125 V		250 V		12 V		AC/DC
G7L-1A-BJ-CB-DC48	Omron	Power/Signal Relay	Panel Mount	Momentary	SPST	DC	CE; CSA; TUV; UL	25A@220VAC			30 ms	100000 Cycle(s)		30 ms		1.9 W		2.067 in (52.5 mm)	34.5 in (876.3 mm)	1.22 kΩ					2.067 x 1.358 x 2.165 in (52.5 x 34.5 x 55 mm)	2.165 in (55 mm)			60 °C (140 °F)	25 A	39 mA			-25 °C (-13 °F)	7.2 V		Screw		36 V								220 V		48 V		AC
MJN2C-I-AC12	Omron	Power/Signal Relay	Panel Mount	Momentary	DPDT	AC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.7 W				21 Ω			142 mA					10A@28VDC	60 °C (140 °F)	10 A		12 V		-45 °C (-49 °F)		10 A	Quick Connect			MJN					28 V	Coil Operate Voltage (AC): 10.2 V	240 V				AC/DC
G6SU-2G-YTR24VDC	Omron	Power/Signal Relay
G6CK-1117P-US-P6CDC12	Omron	Power/Signal Relay																																						G6C
G5LA-14-CFDC5	Omron	Power/Signal Relay	Through Hole-Straight Mount	Momentary	SPDT	DC	CSA; CQC; UL; VDE	5A@250VAC			10 ms	100000 Cycle(s)		5 ms		360 mW		0.78 in (19.8 mm)	15.8 in (401.32 mm)	69.4 Ω					0.78 x 0.622 x 0.622 in (19.8 x 15.8 x 15.8 mm)	0.622 in (15.8 mm)		5A@24VDC	85 °C (185 °F)	5 A	72 mA			-40 °C (-40 °F)	500 mV	5 A	Solder		3.75 V	G5LA					24 V		250 V		5 V		AC/DC
MY4F6VDC	Omron	Power/Signal Relay	Panel Mount	Momentary	4PDT	DC	CE; CSA; LR; SEV; UL	3A@220VAC			20 ms	500000 Cycle(s)		20 ms		900 mW		1.142 in (29 mm)	22.5 in (571.5 mm)	40 Ω					1.142 x 0.886 x 1.339 in (29 x 22.5 x 34 mm)	1.339 in (34 mm)		3A@24VDC	70 °C (158 °F)	3 A	150 mA			-55 °C (-67 °F)	600 mV	3 A	Solder		4.8 V						24 V		220 V		6 V		AC/DC
G6BK-1114P-US-UDC24	Omron	Power/Signal Relay
G6DS-1A-DC12	Omron	Power/Signal Relay	Through Hole-Straight Mount	Momentary	SPST	DC	CSA; UL; VDE	5A@250VAC			10 ms	100000 Cycle(s)		5 ms		180 mW	Box; Tube	0.839 in (21.3 mm)	5.08 in (129.032 mm)	800 Ω					0.839 x 0.2 x 0.492 in (21.3 x 5.08 x 12.5 mm)	0.492 in (12.5 mm)		5A@30VDC	85 °C (185 °F)	5 A	15 mA			-40 °C (-40 °F)	600 mV	5 A	Solder		8.4 V						30 V		250 V		12 V		AC/DC
MKS1TN-10AC24	Omron	Power/Signal Relay	Socket Mount	Momentary	SPST	AC	CSA; IEC; TUV; UL	15A@250VAC			20 ms	100000 Cycle(s)		20 ms				1.358 in (34.5 mm)	34.5 in (876.3 mm)	48.4 Ω			96 mA		1.358 x 1.358 x 1.732 in (34.5 x 34.5 x 44 mm)	1.732 in (44 mm)			60 °C (140 °F)	15 A		24 V		-25 °C (-13 °F)			Snap-On			MK-S						Coil Operate Voltage (AC): 19.2 V, Coil Release Voltage (AC): 7.2 V	250 V				AC
MJN2CF-AC120	Omron	Power/Signal Relay	Panel Mount	Momentary	DPDT	AC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.7 W		1.525 in (38.73 mm)	35.56 in (903.224 mm)	2.25 kΩ			14 mA		1.525 x 1.4 x 2.185 in (38.73 x 35.56 x 55.49 mm)	2.185 in (55.49 mm)		10A@28VDC	60 °C (140 °F)	10 A		120 V		-45 °C (-49 °F)		10 A	Quick Connect			MJN					28 V	Coil Operate Voltage (AC): 102 V	240 V				AC/DC
MJN1C-I-AC240	Omron	Power/Signal Relay	Panel Mount	Momentary	SPDT	AC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.7 W				9.1 kΩ			7 mA					10A@28VDC	60 °C (140 °F)	10 A		240 V		-45 °C (-49 °F)		10 A	Quick Connect			MJN					28 V	Coil Operate Voltage (AC): 204 V	240 V				AC/DC
G4B-112T-C-US-AC100	Omron	Power/Signal Relay	Panel Mount	Momentary	SPDT	AC	CSA; UL	20A@250VAC			20 ms			20 ms		1.3 W		1.42 in (36.06 mm)	32.51 in (825.754 mm)				15 mA		1.42 x 1.28 x 1.14 in (36.06 x 32.51 x 28.95 mm)	1.14 in (28.95 mm)		20A@125VDC	55 °C (131 °F)	20 A		100 V		-10 °C (14 °F)		20 A	Quick Connect			G4B					125 V	Coil Operate Voltage (AC): 80 V, Coil Release Voltage (AC): 30 V	250 V				AC/DC
MKS3PI12VDC	Omron	Power/Signal Relay	Socket Mount	Momentary	3PDT	DC	CE; IEC; TUV; UL	10A@250VAC			30 ms	100000 Cycle(s)		20 ms		1.4 W		1.358 in (34.5 mm)	34.5 in (876.3 mm)	107 Ω					1.358 x 1.358 x 2.067 in (34.5 x 34.5 x 52.5 mm)	2.067 in (52.5 mm)		10A@30VDC	60 °C (140 °F)	10 A	112 mA			-40 °C (-40 °F)	1.8 V	10 A	Snap-On		9.6 V						30 V		250 V		12 V		AC/DC
G2R-1AC110	Omron	Power/Signal Relay	Through Hole-Straight Mount	Momentary	SPDT	AC	CSA; SEMKO; TUV; UL; VDE	10A@250VAC			15 ms			10 ms		900 mW	Tray	1.142 in (29 mm)	13 in (330.2 mm)	4.6 kΩ		17 g	11 mA		1.142 x 0.512 x 1.004 in (29 x 13 x 25.5 mm)	1.004 in (25.5 mm)		10A@30VDC		10 A		110 V				10 A	Solder								30 V	Coil Operate Voltage (AC): 88 V, Coil Release Voltage (AC): 33 V	250 V				AC/DC
LY1N-AC110/120	Omron	Power/Signal Relay	Panel Mount	Momentary	SPDT	AC	CE; CSA; TUV; UL	15A@110VAC			25 ms			25 ms		1.2 W		1.1 in (27.94 mm)	21.59 in (548.386 mm)				11 mA		1.1 x 0.85 x 1.42 in (27.94 x 21.59 x 36.06 mm)	1.42 in (36.06 mm)		15A@24VDC	55 °C (131 °F)	15 A		120 V		-25 °C (-13 °F)		15 A	Solder			LY					24 V	Coil Operate Voltage (AC): 96 V, Coil Release Voltage (AC): 36 V	110 V				AC/DC
LY1N-D2-DC12	Omron	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC	CE; CSA; TUV; UL	15A@110VAC			25 ms			25 ms		900 mW		1.1 in (27.94 mm)	21.59 in (548.386 mm)	160 Ω					1.1 x 0.85 x 1.42 in (27.94 x 21.59 x 36.06 mm)	1.42 in (36.06 mm)		15A@24VDC	55 °C (131 °F)	15 A	75 mA			-25 °C (-13 °F)	1.2 V	15 A	Solder		9.6 V						24 V		110 V		12 V		AC/DC
LY2N-CR-AC240	Omron	Power/Signal Relay	Socket Mount	Momentary	DPDT	AC	CSA; LR; SEMKO; SEV; UL; VDE	10A@110VAC			25 ms			25 ms		1.2 W		1.1 in (27.94 mm)	21.59 in (548.386 mm)	18.79 kΩ			5 mA		1.1 x 0.85 x 1.42 in (27.94 x 21.59 x 36.06 mm)	1.42 in (36.06 mm)		10A@24VDC	70 °C (158 °F)	10 A		240 V		-40 °C (-40 °F)		10 A	Snap-On			LY					24 V	Coil Operate Voltage (AC): 192 V, Coil Release Voltage (AC); 72 V	110 V				AC/DC
LY3-D-AC220	Omron	Power/Signal Relay	Socket Mount	Momentary	3PDT	AC	CSA; LR; SEMKO; SEV; UL; VDE	10A@110VAC			25 ms			25 ms		2 W		1.24 in (31.49 mm)	27.94 in (709.676 mm)	8.65 kΩ			12 mA		1.24 x 1.1 x 1.44 in (31.49 x 27.94 x 36.57 mm)	1.44 in (36.57 mm)		10A@24VDC	70 °C (158 °F)	10 A		220 V		-40 °C (-40 °F)		10 A	Snap-On			LY					24 V	Coil Operate Voltage (AC): 176 V, Coil Release Voltage (AC): 66 V	110 V				AC/DC
G2R-1-SN-DC6	Omron	Power/Signal Relay	Socket Mount	Momentary	SPDT	DC	CE; CSA; IEC; LR; UL; VDE	10A@440VAC	1 kVrms	1 Form C	15 ms	100000 Cycle(s)		5 ms	1 GΩ	530 mW		1.142 in (29 mm)	13 in (330.2 mm)	69 Ω		21 g		5	1.142 x 0.512 x 1.398 in (29 x 13 x 35.5 mm)	1.398 in (35.5 mm)	5 kVrms	10A@125VDC	70 °C (158 °F)	10 A	87 mA		7.5A@250VAC	-40 °C (-40 °F)	900 mV	10 A	Snap-On	6 V	4.2 V		100 mΩ	Random			125 V	With LED Indicator	440 V		6 V		AC/DC
G2R-1A-220VAC	Omron	Power/Signal Relay	Through Hole-Straight Mount	Momentary	SPST	AC	CSA; EN; SEV; TUV; UL	10A@380VAC			15 ms	100000 Cycle(s)		10 ms		900 mW		1.142 in (29 mm)	13 in (330.2 mm)	25 kΩ		17 g	5 mA		1.142 x 0.512 x 1.004 in (29 x 13 x 25.5 mm)	1.004 in (25.5 mm)		10A@125VDC	70 °C (158 °F)	10 A		220 V		-40 °C (-40 °F)		10 A	Solder								125 V	Coil Operate Voltage (AC): 176 V, Coil Release Voltage (AC): 66 V	380 V				AC/DC
LY1FDC48	Omron	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC	CE; CSA; TUV; UL	15A@110VAC			25 ms	200000 Cycle(s)		25 ms		900 mW		1.73 in (43.94 mm)	22.6 in (574.04 mm)	2.6 kΩ					1.73 x 0.89 x 1.4 in (43.94 x 22.6 x 35.56 mm)	1.4 in (35.56 mm)		15A@24VDC	55 °C (131 °F)	15 A	19 mA			-25 °C (-13 °F)	4.8 V	15 A	Solder		38.4 V						24 V		110 V		48 V		AC/DC
G6CK-1114P-USDC12V	Omron
G6E-134PL-USDC12	Omron	Power/Signal Relay
MY-4H-US-110VAC	Omron	Power/Signal Relay																																						MY4H
G2A-434A-NAC6	Omron	Power/Signal Relay	Socket Mount	Momentary	4PDT	AC		0.7A@250VAC			15 ms	5000000 Cycle(s)		15 ms		1.4 W		1.161 in (29.5 mm)	22.5 in (571.5 mm)	8.9 Ω			295 mA		1.161 x 0.886 x 1.673 in (29.5 x 22.5 x 42.5 mm)	1.673 in (42.5 mm)		2A@125VDC	40 °C (104 °F)	700 mA		6 V		-10 °C (14 °F)		2 A	Snap-On								125 V	Coil Operate Voltage (AC): 4.8 V, Coil Release Voltage (AC): 1.8 V	250 V				AC/DC
G4B-112T1-C-US-AC24	Omron	Power/Signal Relay	Panel Mount	Momentary	SPDT	AC	CSA; UL	20A@250VAC	1.4 kVrms	1 Form C	20 ms		360W@125VDC	20 ms	100 MΩ	1.3 W		1.42 in (36.06 mm)	32.51 in (825.754 mm)			44 g	63 mA	5	1.42 x 1.28 x 1.14 in (36.06 x 32.51 x 28.95 mm)	1.14 in (28.95 mm)		20A@125VDC	55 °C (131 °F)	20 A		24 V	10A@220VAC	-10 °C (14 °F)	7.2 V	20 A	Quick Connect	24 V	19.2 V	G4B	30 mΩ	Random	Silver Cadmium Oxide	5	125 V	Coil Operate Voltage (AC): 19.2 V, Coil Release Voltage (AC): 7.2 V	250 V	0.315 in (8.001 mm)	26.4 V	3300VA@250VAC	AC/DC
MKS3PN-V110VAC	Omron	Power/Signal Relay	Socket Mount	Momentary	3PDT	AC	CE; IEC; TUV; UL	10A@250VAC			20 ms	100000 Cycle(s)		20 ms		2.7 W		1.358 in (34.5 mm)	34.5 in (876.3 mm)	932 Ω			24 mA		1.358 x 1.358 x 2.067 in (34.5 x 34.5 x 52.5 mm)	2.067 in (52.5 mm)		10A@30VDC	60 °C (140 °F)	10 A		110 V		-40 °C (-40 °F)		10 A	Snap-On			MK-S					30 V	Coil Operate Voltage (AC): 88 V, Coil Release Voltage (AC): 33 V	250 V				AC/DC
G7L-2A-TUBJDC6	Omron	Power/Signal Relay																																						G7L
MY4IN-CRAC48/50(S)	Omron	Power/Signal Relay																																						MY
G2R-2-AC240	Omron	Power/Signal Relay	Through Hole-Straight Mount	Momentary	DPDT	AC	CSA; SEMKO; TUV; UL; VDE	5A@250VAC			15 ms			10 ms		900 mW		1.142 in (29 mm)	13 in (330.2 mm)	30 kΩ		17 g	4 mA		1.142 x 0.512 x 1.004 in (29 x 13 x 25.5 mm)	1.004 in (25.5 mm)		5A@30VDC	70 °C (158 °F)	5 A		240 V		-40 °C (-40 °F)		5 A	Solder								30 V	Coil Operate Voltage (AC): 192 V, Coil Release Voltage (AC): 72 V	250 V				AC/DC
G7J-3A1B-TZ-AC100/120	Omron	Power/Signal Relay	Panel Mount	Momentary	4PST	AC	CE; CSA; UL	25A@250VAC			50 ms	100000 Cycle(s)		50 ms		2.6 W		2.028 in (51.5 mm)	34.5 in (876.3 mm)				22 mA		2.028 x 1.358 x 2.157 in (51.5 x 34.5 x 54.8 mm)	2.157 in (54.8 mm)		25A@125VDC	60 °C (140 °F)	25 A		120 V		-25 °C (-13 °F)		25 A	Quick Connect			G7J					125 V	Coil Operate Voltage (AC): 90 V, Coil Operate Voltage (AC): 18 V	250 V				AC/DC
G7L-1A-BUBJ12VAC	Omron	Power/Signal Relay	Panel Mount	Momentary	SPST	AC	CSA; TUV; UL	30A@250VAC			30 ms	100000 Cycle(s)		30 ms		1.7 W		2.067 in (52.5 mm)	34.5 in (876.3 mm)				142 mA		2.067 x 1.358 x 2.165 in (52.5 x 34.5 x 55 mm)	2.165 in (55 mm)			60 °C (140 °F)	30 A		12 V		-25 °C (-13 °F)			Screw			G7L						Coil Operate Voltage (AC): 9 V, Coil Release Voltage (AC): 1.8 V	250 V				AC
G7J-2A2B-B-DC110	Omron	Power/Signal Relay	Panel Mount	Momentary	4PST	DC	CE; CSA; UL	25A@250VAC			50 ms	100000 Cycle(s)		50 ms		2 W		2.106 in (53.5 mm)	34.5 in (876.3 mm)	6.05 kΩ					2.106 x 1.358 x 2.52 in (53.5 x 34.5 x 64 mm)	2.52 in (64 mm)		25A@125VDC	60 °C (140 °F)	25 A	18 mA			-25 °C (-13 °F)	11 V	25 A	Screw		82.5 V						125 V		250 V		110 V		AC/DC
MKS3PN1-2DC24	Omron	Power/Signal Relay	Socket Mount	Momentary	3PDT	DC	CE; IEC; TUV; UL	10A@250VAC			30 ms	100000 Cycle(s)		20 ms		1.4 W		1.358 in (34.5 mm)	34.5 in (876.3 mm)	430 Ω					1.358 x 1.358 x 2.067 in (34.5 x 34.5 x 52.5 mm)	2.067 in (52.5 mm)		10A@250VDC	60 °C (140 °F)	10 A	56 mA			-25 °C (-13 °F)	3.6 V	10 A	Snap-On		19.2 V						250 V		250 V		24 V		AC/DC

Power & Signal Relays

Power and signal relays are electromechanical switches that are used to control power circuits and signal circuits respectively. Power relays are designed to handle higher voltages and currents, typically in the range of several hundred volts and amperes. They are commonly used in industrial and automotive applications to switch on/off motors, heaters, lights, and other high-power loads. Signal relays, on the other hand, are designed to handle lower voltages and currents, typically in the range of several volts and milliamperes. They are commonly used in electronic equipment such as computers, telecommunications equipment, and consumer electronics to switch on/off signals, data, and low-power loads.

Power and signal relays come in different types and configurations depending on the specific application requirements. Some common types include electromechanical relays, reed relays, solid-state relays, and latching relays. Electromechanical relays use a mechanical switching mechanism, typically a set of contacts that move to make or break an electrical circuit. Reed relays use a set of magnetically activated contacts that are enclosed in a sealed glass tube. Solid-state relays use a semiconductor device to switch on/off the load. Latching relays use a magnetic field to hold the contacts in either the open or closed position, eliminating the need for continuous power to maintain the relay's state.

Power and signal relays play a critical role in the overall performance and reliability of electrical and electronic systems. The selection of the appropriate relay for a given application is crucial to ensure proper operation, safety, and longevity of the system. Factors to consider when selecting a relay include the load current and voltage, switching frequency, contact rating, switching speed, contact bounce, and environmental conditions such as temperature, humidity, and vibration. Proper maintenance and testing of relays are also important to ensure their continued performance and reliability over time.