SPDT Toggle Switches 398

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Part	Manufacturer	Switch Type	Mounting Feature	Switch Function	Type (Actuator)	Contact Function	Solderability	AC Maximum Rating R Load (Contact)	Center Contact Plating	Color (Actuator)	Housing Material	Body Color	Angle (Actuator)	Dielectric Withstand Volts (V)	Terminal Material	Electrical Life	DC Maximum Power Rating R Load (Contact)	Insulation Resistance	Packing Method	Body Length/Diameter	Body Width	Length (Bushing)	Sealing	Contact Timing	Maximum Operating Force	Insulator Material	End Contact Plating	Body Height	DC Maximum Rating R Load (Contact)	Finish (Actuator)	Maximum Operating Temperature	Maximum AC Contact Current	Center Contact Material	Minimum Operating Temperature	Length (Actuator)	Terminal Finish	Switch Action	Maximum DC Contact Current	Termination Type	Manufacturer Series	Contact Resistance	Diameter (Bushing)	End Contact Material	PCB Hole Count	Maximum DC Contact Voltage	Additional Features	Maximum AC Contact Voltage	JESD-609 Code	Type (Bushing)	Terminal Length	AC Maximum Power Rating R Load (Contact)	Material (Actuator)
1TL1-3D	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LOCKING LEVER	ON-ON		15A@125VAC	GOLD				31 deg							28.45 mm	15.75 inch	.47 inch	DUST PROOF				GOLD	29.46 mm	20A@28VDC		71 Cel	15 A	SILVER ALLOY	-65 Cel	1.05 inch		LATCHED	20 A	SCREW			.42 inch	SILVER ALLOY		28 V	LOCKED OUT OF CENTER	125 V		15/32-32		1HP@250VAC
1TL1-3	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER	OFF-ON		15A@125VAC	GOLD				31 deg							28.45 mm	15.75 inch	.47 inch	DUST PROOF				GOLD	29.46 mm	20A@28VDC		71 Cel	15 A	SILVER ALLOY	-65 Cel	.68 inch		LATCHED	20 A	SCREW			.427 inch	SILVER ALLOY		28 V		125 V		15/32-32		1HP@250VAC
102TL1-3D	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER			15A@125VAC												33.53 mm	22.61 inch		DUST PROOF; WATER PROOF					37.34 mm	20A@28VDC		71 Cel	15 A					LATCHED	20 A	SCREW	102TL1					28 V		125 V
MTA106D	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT	LONG BAT	ON-ON	WAVE	6A@125VAC	GOLD OVER SILVER	BLACK		GREEN	24 deg	1500		60000 Cycle(s)		1000000000 ohm		13 mm	8 inch	.315 inch	EPOXY TERMINAL SEALED	BREAK-BEFORE-MAKE	14.71 N		GOLD	10 mm	4A@28VDC	CHROME	80 Cel	6 A	COPPER ALLOY	-20 Cel	.413 inch	Gold (Au)	LATCHED	6 A	WIRE		10 mohm		COPPER ALLOY		28 V		125 V	e4	1/4-40	.157 inch		PHENOLIC
MS24523-23	Defense Logistics Agency	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	STANDARD LEVER			15A@115VAC												28.4 mm	15.7 inch		ENVIRONMENTALLY SEALED					29.5 mm	20A@28VDC			15 A					LATCHED	20 A	SCREW						28 V		115 V
4-6437630-8	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT		ON-OFF-(ON)			SILVER			BLACK		1500				1000000000 ohm					WATER PROOF									6 A						6 A	SOLDER AND WIRE		10 mohm		COPPER ALLOY				250 V
A101KZQ04	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT	TOGGLE	ON-ON		2A@250VAC	SILVER	BLACK				1000		6000 Cycle(s)		1000000000 ohm		12.7 mm	6.858 inch	.28 inch	EPOXY TERMINAL SEALED			DIALLYL PHTHALATE	SILVER	8.89 mm	5A@28VDC	NICKEL	85 Cel	5 A	COPPER	-30 Cel	.64 inch		VERTICAL	5 A	WIRE		10 mohm		COPPER ALLOY		28 V		125 V			.156 inch		PHENOLIC
AWTE1504	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT		ON-OFF-ON			SILVER					1500				1000000000 ohm					WATER PROOF									20 A						20 A	WIRE		10 mohm		BRASS		30 V		250 V
TT11DGRA1	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT	BATON SHORT TYPE	ON-ON			GOLD OVER NICKEL					1000				1000000000 ohm		8.1 mm	5 inch		EPOXY TERMINAL SEALED						3A@20VDC	GOLD		.4 A					LATCHED	.4 A	SOLDER				GOLD		20 V		20 V
TT11DG-RA-1	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT	BATON SHORT TYPE	ON-ON			GOLD OVER NICKEL					1000				1000000000 ohm		5.61 mm			EPOXY TERMINAL SEALED							GOLD		.4 A					LATCHED	.4 A	SOLDER				GOLD		20 V		20 V
8500K4	Eaton Corporation	TOGGLE SWITCH	PANEL MOUNT	SPDT	LEVER			15A@115VAC								20000 Cycle(s)							ENVIRONMENTALLY SEALED						20A@28VDC		71 Cel	15 A		-65 Cel			LATCHED	20 A							28 V		115 V
111TW1-3D	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER			15A@125VAC												15.37 mm	14.35 inch		DUST PROOF; WATER PROOF					18.54 mm	20A@28VDC		71 Cel	15 A					LATCHED	20 A	WIRE	111TW1					28 V		125 V
7103SYCQE	ITT Cannon	TOGGLE SWITCH	THROUGH HOLE-STRAIGHT	SPDT	TOGGLE BAT	ON-OFF-ON	MIL-STD	5A@120VAC	SILVER		STAINLESS STEEL		25 deg	1000VRMS	COPPER ALLOY	40000 Cycle(s)		1000000000 ohm		12.7 mm	6.86 inch	.35 inch	EPOXY TERMINAL SEALED	BREAK-BEFORE-MAKE		GLASS FILLED NYLON	SILVER	8.89 mm	5A@28VDC	BRIGHT CHROME	85 Cel	5 A	COPPER ALLOY	-30 Cel	.41 inch	Silver (Ag)	LATCHED	5 A	SOLDER	7000	10 mohm	.25 inch	SILVER	3	28 V		120 V	e4	1/4-40	.25 inch		BRASS
12TL1-3D	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER			15A@125VAC												34.04 mm	23.11 inch		DUST PROOF; WATER PROOF					30.99 mm	20A@28VDC		71 Cel	15 A					LATCHED	20 A	SCREW	12TL1					28 V		125 V
100SP1T1B1M2QEH	E-switch	TOGGLE SWITCH	THROUGH HOLE-STRAIGHT	SPDT	TOGGLE	ON-ON		5A@120VAC					25 deg	1000VRMS		40000 Cycle(s)		1000000000 ohm	BULK			.35 inch	EPOXY	MAKE-BEFORE-BREAK					5A@28VDC		85 Cel	5 A	SILVER	-30 Cel	.41 inch	Silver (Ag)	HORIZONTAL	5 A	SOLDER			.25 inch	SILVER	3	28 V		120 V	e4	1/4-40
4-1825136-8	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT	BATON LONG TYPE	ON-ON		.02A@20VAC	GOLD					1000		6000 Cycle(s)		1000000000 ohm		12.7 mm	6.86 inch	.35 inch	EPOXY TERMINAL SEALED					8.89 mm	.02A@20VDC	NICKEL	85 Cel	.4 A		-30 Cel			LATCHED	.4 A	WIRE		10 mohm		COPPER ALLOY		20 V		20 V
1TL1-7	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER	(ON)-OFF-(ON)		15A@125VAC	GOLD				31 deg							28.45 mm	15.75 inch	.47 inch	DUST PROOF				GOLD	29.46 mm	15A@28VDC		71 Cel	15 A	SILVER ALLOY	-65 Cel	.68 inch		MOMENTARY	15 A	SCREW			.427 inch	SILVER ALLOY		28 V		125 V		15/32-32		1HP@250VAC
5-6437630-5	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT		(ON)-OFF-(ON)			SILVER			BLACK		1500				1000000000 ohm					WATER PROOF									6 A						6 A	SOLDER AND WIRE		10 mohm		COPPER ALLOY				250 V
1TL1-1A	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LOCKING LEVER	ON-OFF-ON		15A@125VAC												28.45 mm	15.75 inch	.47 inch	DUST PROOF					29.46 mm	20A@28VDC		71 Cel	15 A	SILVER CADMIUM OXIDE	-65 Cel	1.05 inch		LATCHED	20 A	SCREW						28 V	LOCKED IN THREE POSITIONS	125 V		15/32-32		1HP@250VAC
34ASP41B1M1QT	Grayhill	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	STANDARD TYPE			5A@125VAC								40000 Cycle(s)				16.51 mm	12.7 inch		EPOXY TERMINAL SEALED					12.06 mm	5A@28VDC		85 Cel	5 A		-30 Cel		SILVER	MOMENTARY	5 A	SOLDER						28 V		125 V	e4
MS24658-23D	Eaton Corporation	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER			15A@115VAC								20000 Cycle(s)				32.26 mm	16.13 inch		ENVIRONMENTALLY SEALED					29.9 mm	20A@28VDC		71 Cel	15 A		-65 Cel			LATCHED	20 A	SCREW						28 V		115 V
MS-24658-23D	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LOCKING LEVER			15A@115VAC												28.45 mm	15.75 inch		DUST PROOF					29.46 mm	20A@28VDC			15 A					LATCHED	20 A	SCREW						28 V		115 V
A105SYZQ04	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT	STANDARD TYPE	(ON)-OFF-(ON)		5A@120VAC	SILVER	BLACK				1000		6000 Cycle(s)		1000000000 ohm		12.7 mm	6.86 inch	.35 inch	EPOXY TERMINAL SEALED			DIALLYL PHTHALATE	SILVER	8.89 mm	5A@28VDC	NICKEL	85 Cel	5 A	COPPER	-30 Cel	.41 inch		MOMENTARY	5 A	WIRE		10 mohm		COPPER ALLOY		28 V		125 V		1/4-40	.156 inch		PHENOLIC
5636AB-2V	Apem Components	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LOCKING TYPE	ON-ON		6A@125VAC	SILVER		STAINLESS STEEL		24 deg	2100VAC		50000 Cycle(s)		1000000000 ohm		13.1826 mm	6.985 inch	.314 inch	EPOXY TERMINAL SEALED			DIALLYL PHTHALATE	SILVER	12 mm	4A@30VDC	NICKEL	85 Cel	6 A	SILVER	-40 Cel	.413 inch	Silver (Ag)	LATCHED	4 A	SOLDER		10 mohm		SILVER		30 V		125 V	e4		.145 inch		BRASS
1TL1-1	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	STANDARD LEVER	ON-OFF-ON		15A@277VAC	GOLD				31 deg							28.45 mm	15.75 inch	.47 inch	DUST PROOF				GOLD	29.46 mm	20A@28VDC		71 Cel	15 A	SILVER ALLOY	-65 Cel	.68 inch		LATCHED	20 A	SCREW			.427 inch	SILVER ALLOY		28 V	MICRO SWITCH	277 V		15/32-32		1HP@250VAC
M2012ES1G01	Nkk Switches	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	SMALL FLATTED	ON-OFF	HAND	0.014A@28VAC	GOLD		DIALLYL PHTHALATE		25 deg	1500VAC	COPPER/BRASS	50000 Cycle(s)	0.4VA@28VDC	1000000000 ohm		13 mm	7.9 inch	.35 inch	EPOXY TERMINAL SEALED				GOLD	10.3 mm	0.014A@28VDC	CHROME	85 Cel	.014 A	COPPER	-30 Cel	.45 inch		LATCHED	.014 A	SOLDER		20 mohm		COPPER/BRASS		28 V		28 V		1/4-40		0.4VA@28VAC	BRASS
2-1825136-7	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT	LEVER	ON-ON		5A@120VAC	SILVER					1000		6000 Cycle(s)		1000000000 ohm		12.7 mm	6.86 inch		EPOXY TERMINAL SEALED					8.89 mm	5A@28VDC	NICKEL	85 Cel	5 A		-30 Cel			LATCHED	5 A	WIRE		10 mohm		COPPER ALLOY		28 V		125 V
11TL1-3D	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER			15A@125VAC												28.45 mm	15.75 inch		DUST PROOF; WATER PROOF					34.04 mm	20A@28VDC		71 Cel	15 A					LATCHED	20 A	WIRE	11TL1					28 V		125 V
5636AB9	Apem Components	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	FLAT TYPE	ON-ON		6A@125VAC			STAINLESS STEEL		24 deg	1500VRMS	SILVER	50000 Cycle(s)		1000000000 ohm		13.2 mm	7 inch	.314 inch	EPOXY TERMINAL SEALED					12 mm	4A@30VDC	CHROME	85 Cel	6 A	SILVER	-40 Cel	.413 inch	Silver (Ag)	LATCHED	4 A	SOLDER	5000	10 mohm	.185 inch	SILVER		30 V		125 V	e4	15/32-32	.145 inch		BRASS
5636AB	Apem Components	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	TOGGLE	ON-ON		6A@125VAC								50000 Cycle(s)				13.2 mm	7 inch		EPOXY TERMINAL SEALED					12 mm	4A@30VDC		85 Cel	6 A		-40 Cel		Silver (Ag)	LATCHED	4 A	SOLDER						30 V		125 V	e4
1TL1-7E	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LOCKING LEVER	(ON)-OFF-(ON)	MIL-STD	15A@125VAC	GOLD				31 deg							28.45 mm	15.75 inch	.47 inch	DUST PROOF				GOLD	29.46 mm	15A@28VDC		71 Cel	15 A	SILVER ALLOY	-65 Cel	.68 inch		MOMENTARY	15 A	SCREW			.427 inch	SILVER ALLOY		28 V		125 V		15/32-32		1HP@250VAC
1NT1-7	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER			10A@277VAC												28.45 mm	15.75 inch		DUST PROOF; WATER PROOF					29.46 mm	15A@28VDC		71 Cel	10 A					MOMENTARY	15 A	SCREW						28 V		277 V
100SP3T1B1M2QEH	E-switch	TOGGLE SWITCH	THROUGH HOLE-STRAIGHT	SPDT	TOGGLE	ON-OFF-ON		5A@120VAC	SILVER				25 deg	1000VRMS		40000 Cycle(s)		1000000000 ohm		.5 mm	.27 inch	.35 inch	EPOXY	MAKE-BEFORE-BREAK				.35 mm	5A@28VDC		85 Cel	5 A	COPPER ALLOY	-30 Cel	.41 inch	Silver (Ag)	LATCHED	5 A	SOLDER		10 mohm			3	28 V		120 V	e4	1/4-40	.26 inch
102TL1-3	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT	SPDT	LEVER			15A@125VAC												33.53 mm	22.61 inch		DUST PROOF					37.39 mm	20A@28VDC		71 Cel	15 A					LATCHED	20 A	SCREW						28 V		125 V
7101SYCQE	ITT Cannon	TOGGLE SWITCH	THROUGH HOLE-STRAIGHT	SPDT	TOGGLE BAT	ON-ON	MIL-STD	5A@120VAC	SILVER		STAINLESS STEEL		25 deg	1000VRMS	COPPER ALLOY	100000 Cycle(s)		1000000000 ohm		12.7 mm	6.86 inch	.35 inch	EPOXY TERMINAL SEALED	BREAK-BEFORE-MAKE		GLASS FILLED NYLON	SILVER	8.89 mm	5A@28VDC	BRIGHT CHROME	85 Cel	5 A	COPPER ALLOY	-30 Cel	.41 inch	Silver (Ag)	LATCHED	5 A	SOLDER	7000	10 mohm	.25 inch	SILVER	3	28 V		120 V	e4	1/4-40	.25 inch		BRASS
MS24523-27	Defense Logistics Agency	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	TOGGLE LEVER			15A@115VAC												32.26 mm	16.13 inch		ENVIRONMENTALLY SEALED					30 mm	15A@28VDC			15 A					MOMENTARY	15 A	SCREW						28 V		115 V
5636ABX814	Apem Components	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	STANDARD TYPE			6A@125VAC								50000 Cycle(s)				13.2 mm	7 inch		EPOXY TERMINAL SEALED					12 mm	4A@30VDC		85 Cel	6 A		-40 Cel		Silver (Ag)	LATCHED	4 A	SOLDER	5000					30 V		125 V	e4
5636A	Apem Components	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	TOGGLE	ON-ON		6A@125VAC	SILVER		STAINLESS STEEL		24 deg	1500VRMS		50000 Cycle(s)		1000000000 ohm	BULK	13.2 mm	7 inch	.314 inch				DIALLYL PHTHALATE	SILVER	12 mm	4A@30VDC	CHROME	85 Cel	6 A		-40 Cel	.413 inch		LATCHED	4 A	SOLDER		10 mohm	.25 inch			30 V		125 V		1/4-40	.145 inch		BRASS
112TW1-1	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER			5A@125VAC												14.99 mm	13.59 inch		ENVIRONMENTALLY SEALED					32.51 mm	5A@28VDC			5 A					LATCHED	5 A	SOLDER						28 V		125 V
1-1437564-0	TE Connectivity	TOGGLE SWITCH	THROUGH HOLE-STRAIGHT	SPDT												80000 Cycle(s)				10.16 mm	4.95 inch							9.5 mm	.02A@20VDC		85 Cel			-30 Cel		Tin/Lead (Sn/Pb)	LATCHED	.02 A	SOLDER						20 V			e0
1TL1-1E	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LOCKING LEVER	ON-OFF-ON	MIL-STD	15A@125VAC	GOLD				31 deg							28.45 mm	15.75 inch	.47 inch	DUST PROOF				GOLD	29.46 mm	20A@28VDC		71 Cel	15 A	SILVER ALLOY	-65 Cel	.68 inch		LATCHED	20 A	SCREW			.427 inch	SILVER ALLOY		28 V		125 V		15/32-32		1HP@250VAC
A103SYZQ04	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT	STANDARD TYPE	ON-OFF-ON		5A@120VAC	SILVER					1000		6000 Cycle(s)		1000000000 ohm		12.7 mm	6.86 inch		EPOXY TERMINAL SEALED					8.89 mm	5A@28VDC	NICKEL	85 Cel	5 A		-30 Cel		Silver (Ag)	LATCHED	5 A	WIRE		10 mohm		COPPER ALLOY		28 V		125 V	e4
1TL1-1D	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LOCKING LEVER			15A@125VAC												28.45 mm	15.75 inch		DUST PROOF					29.46 mm	20A@28VDC			15 A					LATCHED	20 A	SCREW						28 V		125 V
1TL1-7L	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LOCKING LEVER	(ON)-OFF-(ON)	MIL-STD	15A@125VAC	GOLD				31 deg							28.45 mm	15.75 inch	.47 inch	DUST PROOF				GOLD	29.46 mm	15A@28VDC		71 Cel	15 A	SILVER ALLOY	-65 Cel	.68 inch		MOMENTARY	15 A	SCREW			.427 inch	SILVER ALLOY		28 V		125 V		15/32-32		1HP@250VAC
8868K1	Eaton Corporation	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER			3A@115VAC								20000 Cycle(s)				14.53 mm	9.25 inch							17.93 mm	5A@28VDC		71 Cel	3 A		-55 Cel			LATCHED	5 A	SOLDER						28 V		115 V
MS90310-211	Eaton Corporation	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	LEVER			3A@115VAC								20000 Cycle(s)				14.53 mm	9.25 inch							17.93 mm	5A@28VDC		71 Cel	3 A		-55 Cel			LATCHED	5 A	SOLDER						28 V		115 V
12TW1-3D	Honeywell Sensing And Control	TOGGLE SWITCH	PANEL MOUNT-THREADED	SPDT	TOGGLE LEVER	ON-ON		5A@125VAC												14.61 mm	13.59 inch		DUST PROOF					16.76 mm				5 A					LATCHED		SOLDER								125 V
A105SYCQ04	TE Connectivity	TOGGLE SWITCH	PANEL MOUNT	SPDT	STANDARD TYPE	(ON)-OFF-(ON)		5A@120VAC	SILVER					1000		6000 Cycle(s)		1000000000 ohm		12.7 mm	6.86 inch	.35 inch	EPOXY TERMINAL SEALED					8.89 mm	5A@28VDC	NICKEL	85 Cel	5 A		-30 Cel			MOMENTARY	5 A	SOLDER		10 mohm		COPPER ALLOY		28 V		125 V

Toggle Switches

Toggle switches are electronic switches that are activated by flipping a lever up or down. They are commonly used in a variety of applications, such as industrial control systems, automotive electronics, and home appliances.

Toggle switches typically consist of a housing, a lever, and a set of electrical contacts. When the lever is flipped in one direction, it completes a circuit between the contacts, allowing electrical current to flow through the switch. When the lever is flipped in the opposite direction, the circuit is broken and the current stops flowing.

Toggle switches come in different configurations, including single-pole, double-pole, and multi-pole switches. They also come in different contact arrangements, such as make-before-break, break-before-make, and center-off switches.

Toggle switches offer several advantages over other types of switches. They provide a simple and intuitive means of controlling circuits, and they offer tactile feedback that can help to ensure reliable operation. They are also highly durable and can withstand frequent use and harsh environments.

However, toggle switches also have some limitations, such as the need for physical contact to activate the switch and susceptibility to damage from external factors such as dust and debris.