DC Power & Signal Relays 2,156

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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	End Contact Plating	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	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
MJN2CK-DC12	Omron	Power/Signal Relay	Panel Mount	Latched	DPDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				80 Ω									10A@28VDC	70 °C (158 °F)	10 A	150 mA		-45 °C (-49 °F)		10 A	Quick Connect		9 V	MJN					28 V		240 V		12 V		AC/DC
MJN2CK-DC24	Omron	Power/Signal Relay	Panel Mount	Latched	DPDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				330 Ω									10A@28VDC	70 °C (158 °F)	10 A	73 mA		-45 °C (-49 °F)		10 A	Quick Connect		18 V	MJN					28 V		240 V		24 V		AC/DC
MJN3C-DC110	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				10 kΩ									10A@28VDC	70 °C (158 °F)	10 A	11 mA		-45 °C (-49 °F)		10 A	Quick Connect		82.5 V	MJN					28 V		240 V		110 V		AC/DC
MJN3C-DC5	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				20 Ω									10A@28VDC	70 °C (158 °F)	10 A	240 mA		-45 °C (-49 °F)		10 A	Quick Connect		3.75 V	MJN					28 V		240 V		5 V		AC/DC
MJN3C-I-DC24	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				470 Ω									10A@28VDC	70 °C (158 °F)	10 A	50 mA		-45 °C (-49 °F)		10 A	Quick Connect		18 V	MJN					28 V		240 V		24 V		AC/DC
MJN3C-IN-DC110	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				10 kΩ									10A@28VDC	70 °C (158 °F)	10 A	11 mA		-45 °C (-49 °F)		10 A	Quick Connect		82.5 V	MJN					28 V		240 V		110 V		AC/DC
MJN3C-IN-DC24	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				470 Ω									10A@28VDC	70 °C (158 °F)	10 A	50 mA		-45 °C (-49 °F)		10 A	Quick Connect		18 V	MJN					28 V		240 V		24 V		AC/DC
MJN3C-IN-DC48	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				1.8 kΩ									10A@28VDC	70 °C (158 °F)	10 A	25 mA		-45 °C (-49 °F)		10 A	Quick Connect		36 V	MJN					28 V		240 V		48 V		AC/DC
MJN3C-N-DC110	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				10 kΩ									10A@28VDC	70 °C (158 °F)	10 A	11 mA		-45 °C (-49 °F)		10 A	Quick Connect		82.5 V	MJN					28 V		240 V		110 V		AC/DC
MJN3C-N-DC12	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				120 Ω									10A@28VDC	70 °C (158 °F)	10 A	100 mA		-45 °C (-49 °F)		10 A	Quick Connect		9 V	MJN					28 V		240 V		12 V		AC/DC
MJN3C-N-DC24	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				470 Ω									10A@28VDC	70 °C (158 °F)	10 A	50 mA		-45 °C (-49 °F)		10 A	Quick Connect		18 V	MJN					28 V		240 V		24 V		AC/DC
MJN3C-N-DC48	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W				1.8 kΩ									10A@28VDC	70 °C (158 °F)	10 A	25 mA		-45 °C (-49 °F)		10 A	Quick Connect		36 V	MJN					28 V		240 V		48 V		AC/DC
MJN3CF-DC12	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W		1.525 in (38.73 mm)	35.56 in (903.224 mm)	120 Ω					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	70 °C (158 °F)	10 A	100 mA		-45 °C (-49 °F)		10 A	Quick Connect		9 V						28 V		240 V		12 V		AC/DC
MJN3CF-DC24	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W		1.525 in (38.73 mm)	35.56 in (903.224 mm)	470 Ω					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	70 °C (158 °F)	10 A	50 mA		-45 °C (-49 °F)		10 A	Quick Connect		18 V						28 V		240 V		24 V		AC/DC
MJN3CF-DC48	Omron	Power/Signal Relay	Panel Mount	Momentary	3PDT	DC	CSA; UL	10A@240VAC			20 ms	100000 Cycle(s)		10 ms		1.2 W		1.525 in (38.73 mm)	35.56 in (903.224 mm)	1.8 kΩ					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	70 °C (158 °F)	10 A	25 mA		-45 °C (-49 °F)		10 A	Quick Connect		36 V						28 V		240 V		48 V		AC/DC
G2RV-SL500-DC12	Omron	Power/Signal Relay	DIN Rail Mount	Momentary	SPDT	DC	CE; UL; VDE	6A@250VAC			15 ms	70000 Cycle(s)		5 ms		300 mW		4.201 in (106.7 mm)	6.2 in (157.48 mm)	441 mΩ		35 g			4.201 x 0.244 x 3.5 in (106.7 x 6.2 x 88.9 mm)		3.5 in (88.9 mm)		6A@30VDC	70 °C (158 °F)	6 A	27.2 mA		-40 °C (-40 °F)	1.2 V	6 A	Snap-On		9.6 V						30 V		250 V		12 V		AC/DC
G2RV-SL500-DC24	Omron	Power/Signal Relay	DIN Rail Mount	Momentary	SPDT	DC	CE; UL; VDE	6A@250VAC			15 ms	70000 Cycle(s)		5 ms		300 mW		4.201 in (106.7 mm)	6.2 in (157.48 mm)	1.804 Ω		35 g			4.201 x 0.244 x 3.5 in (106.7 x 6.2 x 88.9 mm)		3.5 in (88.9 mm)		6A@30VDC	70 °C (158 °F)	6 A	13.3 mA		-40 °C (-40 °F)	2.4 V	6 A	Snap-On		19.2 V						30 V		250 V		24 V		AC/DC
G8H-1C4T-R-DC12	Omron	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC		10A@16VAC			25 ms	100000 Cycle(s)		20 ms		1.44 W	Box	0.886 in (22.5 mm)	15 in (381 mm)	80 Ω					0.886 x 0.591 x 0.866 in (22.5 x 15 x 22 mm)		0.866 in (22 mm)		10A@16VDC	125 °C (257 °F)	10 A	150 mA		-40 °C (-40 °F)	700 mV	10 A	Snap-On		7 V						16 V		16 V		12 V		AC/DC
G8JR-1A7T-R-DC12	Omron	Power/Signal Relay	Panel Mount	Momentary	SPST	DC		50A@16VAC			20 ms	100000 Cycle(s)		20 ms		2.03 W		1.102 in (28 mm)	28 in (711.2 mm)	71 Ω					1.102 x 1.102 x 0.984 in (28 x 28 x 25 mm)		0.984 in (25 mm)		50A@16VDC	125 °C (257 °F)	50 A	169 mA		-40 °C (-40 °F)	1 V	50 A	Snap-On		8 V						16 V		16 V		12 V		AC/DC
6-1415510-1	TE Connectivity	Power/Signal Relay	Panel Mount	Momentary	SPST	DC	UL; VDE	16A@400VAC	1 kVrms	1 Form A	15 ms	50000 Cycle(s)		15 ms		400 mW	Box; Tray	1.142 in (29 mm)	12.7 in (322.58 mm)	360 Ω	RT2	20 g			1.142 x 0.52 x 0.63 in (29 x 13.2 x 16 mm)		0.63 in (16 mm)	4 kVrms		105 °C (221 °F)	16 A	33 mA		85 °C (185 °F)	1.2 V	16 A	Solder/Quick Connect		8.4 V				Silver Nickel				400 V		12 V		AC/DC
7-1415390-1	TE Connectivity	Power/Signal Relay	Panel Mount	Latched	SPDT	DC	UL; VDE	5A@400VAC	1 kVrms	1 Form C		100000 Cycle(s)			10000 GΩ	220 mW	Box; Tube	0.787 in (20 mm)	10 in (254 mm)	22 Ω	RT2	5 g			0.787 x 0.394 x 0.394 in (20 x 10 x 10 mm)		0.394 in (10 mm)	4 kVrms		85 °C (185 °F)	5 A	100 mA		70 °C (158 °F)	1.6 V	5 A	Solder/Quick Connect		1.6 V				Silver Nickel				400 V		2 V		AC/DC
7-1415517-1	TE Connectivity	Power/Signal Relay	Panel Mount	Momentary	SPST	DC	UL; VDE	16A@400VAC	1 kVrms	1 Form A	15 ms	100000 Cycle(s)		15 ms		400 mW	Box; Tray	1.142 in (29 mm)	12.7 in (322.58 mm)	360 Ω	RT2	20 g			1.142 x 0.52 x 0.63 in (29 x 13.2 x 16 mm)		0.63 in (16 mm)	4 kVrms		85 °C (185 °F)	16 A	33 mA		70 °C (158 °F)	1.2 V	16 A	Solder/Quick Connect		8.4 V				Silver Nickel				400 V		12 V		AC/DC
4-1617072-3	TE Connectivity	Power/Signal Relay	Through Hole-Straight Mount		DPDT-CO	DC				2 Form C						642 mW				56 Ω	Hermetically Sealed									125 °C (257 °F)	2 A			-65 °C (-85 °F)		2 A	Solder/Quick Connect								28 V		28 V		6 V
4-1617073-5	TE Connectivity	Power/Signal Relay	Panel Mount		DPDT-CO	DC				2 Form C						520 mW				1.35 kΩ	Hermetically Sealed									125 °C (257 °F)	2 A			-65 °C (-85 °F)		2 A	Solder								28 V		28 V		26.5 V
9-1393222-4	TE Connectivity	Power/Signal Relay		Latched	SPDT	DC	UL; VDE	8A@250VAC	1 kVrms	1 Form C	10 ms			5 ms		221 mW		1.181 in (30 mm)	10 in (254 mm)	652 Ω		11 g		5	1.181 x 0.394 x 0.591 in (30 x 10 x 15 mm)		0.591 in (15 mm)	4 kVrms		85 °C (185 °F)	8 A			-40 °C (-40 °F)	1.2 V		Solder	12 V	8.2 V			Random		5			250 V	0.1496 in (3.8 mm)		2000VA@250VAC	AC
3-1393779-8	TE Connectivity	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC	UL	1.25A@125VAC	750 Vrms	2 Form C	17 ms	100000 Cycle(s)	72W@120VDC	22 ms	1000 GΩ	206 mW	Box; Tube	0.61 in (15.49 mm)	10.5 in (266.7 mm)	2.8 kΩ	IP67	4 g		6	0.61 x 0.413 x 0.453 in (15.5 x 10.5 x 11.5 mm)	Gold	0.453 in (11.5 mm)	1 kVrms	1.25A@120VDC	85 °C (185 °F)	1.25 A	9 mA	24 V	-40 °C (-40 °F)	2.4 V	1.25 A	Solder/Quick Connect	24 V	18 V		100 mΩ	Random	Silver Palladium Alloy	6	120 V	Release Time with Diode in Parallel	125 V	0.1378 in (3.5 mm)	24 V	360VA@125VAC	AC/DC
J1MACD-26XMS	TE Connectivity	Power/Signal Relay	Panel Mount		SPST-CO	DC				1 Form C						351 mW				2 kΩ	Hermetically Sealed									125 °C (257 °F)	1 A			-65 °C (-85 °F)		1 A	Solder/Quick Connect								28 V		28 V		26 V
HFW1201G01M	TE Connectivity	Power/Signal Relay	Panel Mount	Momentary	DPDT-CO	DC	M39016			2 Form C						900 mW				160 Ω	Hermetically Sealed									125 °C (257 °F)	2 A	75 mA		-65 °C (-85 °F)		2 A	Solder												12 V		AC/DC
KHAU-17D12-12	TE Connectivity	Power/Signal Relay	Panel Mount	Momentary	4PDT	DC	CSA; UL		1 kVrms	4 Form C	13 ms			6 ms	100 MΩ	900 mW	Tray	1.11 in (28.2 mm)	21.8 in (553.72 mm)	160 Ω	Dust Proof	45 g		8	1.11 x 0.858 x 1.374 in (28.2 x 21.8 x 34.9 mm)		1.28 in (32.5 mm)	1.5 kVrms		70 °C (158 °F)	5 A	75 mA		50 °C (122 °F)		5 A	Solder/Quick Connect	12 V	9 V		100 mΩ	Random	Silver Cadmium Oxide				240 V	0.315 in (8.001 mm)	12 V
7-1415073-1	TE Connectivity	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC	UL; VDE	16A@400VAC	1 kVrms	1 Form C						400 mW	Box	3.031 in (77 mm)	15.8 in (401.32 mm)	1.44 kΩ	IP20	54 g					2.717 in (69 mm)	5 kVrms		85 °C (185 °F)	16 A	17 mA		70 °C (158 °F)	2.4 V	16 A	Solder/Quick Connect		16.8 V				Silver Nickel				400 V		24 V		AC
2-1617515-3	TE Connectivity	Power/Signal Relay	Panel Mount		DPDT-CO	DC				2 Form C						520 mW				1.35 kΩ	Hermetically Sealed									125 °C (257 °F)	2 A			-65 °C (-85 °F)		2 A	Solder												26.5 V
2960261	Phoenix Contact	Power/Signal Relay		Momentary	4PDT	DC	DIN; GOST; IEC; VDE				13 ms			8 ms		912 mW				630 Ω										70 °C (158 °F)		38 mA		-55 °C (-67 °F)											125 V		250 V		24 V
2981978	Phoenix Contact	Power/Signal Relay	DIN Rail Mount	Momentary		DC	CUL; UL	5A@250VAC			50 ms			50 ms				3.898 in (99 mm)	17.5 in (444.5 mm)						3.898 x 0.689 x 4.508 in (99 x 17.5 x 114.5 mm)	Gold	4.508 in (114.5 mm)		5A@250VDC	85 °C (185 °F)	5 A	55 mA		-20 °C (-4 °F)		5 A		24 V					Silver Copper Nickel Alloy		250 V		250 V			1250VA@250VAC	AC/DC
4-1617073-0	TE Connectivity	Power/Signal Relay	Panel Mount		DPDT-CO	DC				2 Form C						520 mW				1.35 kΩ	Hermetically Sealed									125 °C (257 °F)	2 A			-65 °C (-85 °F)		2 A	Solder								28 V		28 V		26.5 V
4-1617073-1	TE Connectivity	Power/Signal Relay	Through Hole-Straight Mount		DPDT-CO	DC				2 Form C						520 mW				1.35 kΩ	Hermetically Sealed									125 °C (257 °F)	2 A			-65 °C (-85 °F)		2 A	Solder/Quick Connect								28 V		28 V		26.5 V
5-1617515-1	TE Connectivity	Power/Signal Relay	Panel Mount		DPDT-CO	DC				2 Form C						642 mW				56 Ω	Hermetically Sealed									125 °C (257 °F)	2 A			-65 °C (-85 °F)		2 A	Solder								28 V		28 V		6 V
HFW1106K12	TE Connectivity	Power/Signal Relay	Panel Mount		DPDT-CO	DC				2 Form C						1.003 W				700 Ω	Hermetically Sealed									125 °C (257 °F)	2 A			-65 °C (-85 °F)		2 A	Solder												26.5 V
HMB1230K01P	TE Connectivity	Power/Signal Relay	Panel Mount		DPDT-CO	DC				2 Form C						1.003 W				700 Ω	Hermetically Sealed									125 °C (257 °F)	2 A			-65 °C (-85 °F)		2 A	Solder												26.5 V
J1MAC-26XP	TE Connectivity	Power/Signal Relay	Panel Mount		SPST-CO	DC				1 Form C						351 mW				2 kΩ	Hermetically Sealed									125 °C (257 °F)	1 A			-65 °C (-85 °F)		1 A	Solder/Quick Connect								28 V		28 V		26 V
JMGACDD-26PW	TE Connectivity	Power/Signal Relay	Panel Mount		DPDT-CO	DC				2 Form C						450 mW				1.56 kΩ	Hermetically Sealed									125 °C (257 °F)	1 A			-65 °C (-85 °F)		1 A	Solder/Quick Connect								28 V		28 V		26.5 V
JMGSCDD-26PW	TE Connectivity	Power/Signal Relay	Panel Mount		DPDT-CO	DC				2 Form C						199 mW				3.2 kΩ	Hermetically Sealed									125 °C (257 °F)	1 A			-65 °C (-85 °F)		1 A	Solder/Quick Connect								28 V		28 V		26.5 V
M39016/19-036L	TE Connectivity	Power/Signal Relay	Panel Mount	Momentary	DPDT-CO	DC		1A@28VAC		2 Form C						450 mW				1.56 kΩ	Hermetically Sealed						0.28 in (7.11 mm)		1A@28VDC	125 °C (257 °F)	1 A	17 mA		-65 °C (-85 °F)		1 A	Solder/Quick Connect	26.5 V				Random			28 V		28 V		26.5 V		AC/DC
RD6CAH2600	TE Connectivity	Power/Signal Relay	Panel Mount		6PDT-CO	DC				6 Form C						3.511 W				200 Ω	Hermetically Sealed									125 °C (257 °F)				-65 °C (-85 °F)			Solder								30 mV				26.5 V
RP421F12	TE Connectivity	Power/Signal Relay	Panel Mount			DC			1 kVrms	2 Form C						1.25 W	Box; Tube			105 Ω			114 mA		1.14 x 0.5 x 1 in (29 x 12.6 x 25.5 mm)			4 kVrms			8 A	114 mA				8 A	Solder/Quick Connect						Silver		300 V		400 V		12 V
ST3P2LC4	TE Connectivity	Power/Signal Relay	Panel Mount			DC			1 kVrms	1 Form C						220 mW	Box	3.15 in (80 mm)	6.2 in (157.48 mm)	3.39 kΩ		32 g					3.701 in (94 mm)	4 kVrms		55 °C (131 °F)	6 A			50 °C (122 °F)		6 A	Solder/Quick Connect						Silver Tin Oxide				400 V		24 V
V23134A1052C643	TE Connectivity	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC			500 Vrms	1 Form C						1.6 W		1.02 in (25.9 mm)	25.9 in (657.86 mm)	90 Ω	RT1	35 g			1.02 x 1.02 x 0.98 in (25.9 x 25.9 x 24.9 mm)		0.98 in (24.9 mm)	500 Vrms	60A@12VDC	125 °C (257 °F)	60 A	133 mA		105 °C (221 °F)		60 A	Solder/Quick Connect	12 V				Random	Silver Alloy		12 V	Socket Mountable			12 V		DC
V23134-J1052-D642	TE Connectivity	Power/Signal Relay	Panel Mount	Latched	SPST	DC			500 Vrms	1 Form A	7 ms	100000 Cycle(s)		2 ms		1.6 W		1.02 in (25.9 mm)	25.9 in (657.86 mm)	90 Ω		38 g		6	1.02 x 1.02 x 0.98 in (25.9 x 25.9 x 24.9 mm)		0.98 in (24.9 mm)	500 Vrms		125 °C (257 °F)	70 A			105 °C (221 °F)	1.6 V	70 A	Solder/Quick Connect	12 V	7.2 V			Random	Silver Alloy		12 V				12 V		DC
KHAU-11D11-24	TE Connectivity	Power/Signal Relay	Panel Mount	Momentary	DPDT	DC	CSA; UL		1 kVrms	2 Form C	13 ms			6 ms	100 MΩ	850 mW		1.11 in (28.2 mm)	21.8 in (553.72 mm)	650 Ω	Dust Proof	45 g		8	1.11 x 0.858 x 1.374 in (28.2 x 21.8 x 34.9 mm)		1.28 in (32.5 mm)	1.5 kVrms		70 °C (158 °F)	2.5 A	38 mA		50 °C (122 °F)		2.5 A	Solder/Quick Connect	24 V	18 V		100 mΩ	Random	Silver				240 V	0.315 in (8.001 mm)	24 V

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.