Microswitches

Microswitches are mechanically operated electrical switches designed with an actuator and terminals called common, normally open and normally closed. A micro switch is also known as a snap action switch, they operate by using a spring loaded lever to open and close a set of internal contacts inside the unit.

How does a microswitch work?

Power is typically attached to the common terminal, this leads into the switch and energises the spring and because the spring is touching the normally close pin it sends power out here, this is called a resting state. Once the arm is moved the power is then transferred to the normally open pin.

Where would you find them?

Microswitches are differentiated by their electrical characteristics. These are small devices and generally only designed to carry low current and voltages. These switches are very commonly employed as safety devices, as they are reliable, inexpensive and can open up a circuit when needed, preventing a machine from being turned on or a door from closing when someone is in the way.

Actuator types

There are various types available but the operating principles are the same, switches are actuated by a plunger, a button, a roller or a lever.

What is their operating life?

Microswitches operating life is generally very high, being measured in millions of cycles, in most cases. Consumer products generally have lighter-duty microswitches than industrial products, but the low cost of these parts makes it easy enough to upgrade to higher mechanical life expectancies when required or when it's simply beneficial to do so.

Standards

We offer a range of high quality sealed miniature and sub-miniature microswitches that meet industry standards and RoHS compliance.

What type of applications need microswitches?

Microswitches are used in consumer devices and industrial equipment. Common application for these devices are in door interlocks, microwave ovens or where a door has to be shut before the power to the device will turn on. Microswitches are also used in levelling devices, such as those used on vending machines. In an elevator, these devices are used in the door as a safety switch.

Microswitches can be designed to be very sensitive. Such designs can be used in very precise equipment, such as that which measures the flow of air or other gasses through a system. These devices are used extensively in industry, often in control circuits.

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Description Price Actuator Type Terminal Type Contact Current Rating Contact Configuration IP Rating Operating Force Minimum Operating Temperature Maximum Operating Temperature Switch Housing Contact Material Case Material Mechanical Life Release Force Operating Temperature Range
RS Stock No. 159-4590
Mfr. Part No.DB1C-A1LB
BrandZF
HK$17.69
Each
units
Short Lever Solder 6 A @ 250 V ac SPDT-NO/NC IP50 0.59 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 320-512
Mfr. Part No.DC1C-C3LC
BrandZF
HK$74.56
Each
units
Lever Through Hole 6 A @ 250 V ac SPDT-NO/NC IP6K7 0.69 N -40°C +105°C - Silver Alloy - 1000000Operations - -40 → +105°C
RS Stock No. 868-1900
Mfr. Part No.D443-R1RA-G2
BrandZF
HK$61.34
Each
units
Roller Lever Quick Connect 6 A @ 30 V dc, 10 A @ 125/250 V ac SPDT IP50 - -40°C +150°C - Silver Alloy Thermoplastic Polyester PET - - -40 → +150°C
RS Stock No. 159-4449
Mfr. Part No.D459-V3RD
BrandZF
HK$13.17
Each (In a Pack of 5)
units
Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC - 0.49 N -40°C +85°C - Silver Alloy - - - -40 → +85°C
RS Stock No. 320-528
Mfr. Part No.DC1C-C3RC
BrandZF
HK$64.96
Each
units
Roller Lever Through Hole 6 A @ 250 V ac SPDT-NO/NC IP6K7 0.78 N -40°C +105°C - Silver Alloy - 1000000Operations - -40 → +105°C
RS Stock No. 538-8787
Mfr. Part No.DG13-B1LA
BrandZF
HK$21.26
Each (In a Pack of 5)
units
Hinge Lever PCB 3 A @ 125 V ac SPDT-NO/NC - 0.44 N -25°C +85°C - Silver Alloy - 1000000Operations - -25 → +85°C
RS Stock No. 150-710
Mfr. Part No.DC1C-A1LD
BrandZF
HK$31.80
Each
units
Long Hinge Lever Solder 6 A @ 250 V ac SPDT-NO/NC IP6K7 - -40°C +120°C - Silver Alloy - 1000000Operations - -40 → +120°C
RS Stock No. 159-4411
Mfr. Part No.D459-V3AA
BrandZF
HK$20.05
Each (In a Pack of 5)
units
Button Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -40°C +85°C - Silver Alloy - - - -40 → +85°C
RS Stock No. 706-4228
Mfr. Part No.D443-P4AA
BrandZF
HK$19.31
Each
units
Button PCB 10 A @ 250 V ac SPDT-NO/NC - 2.79 N -40°C +85°C - Silver Alloy - - - -40 → +85°C
RS Stock No. 159-4534
Mfr. Part No.D45U-V3AA
BrandZF
HK$40.45
Each
units
Button Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -40°C +150°C - Silver Alloy - - - -40 → +150°C
RS Stock No. 517-511
Mfr. Part No.DC3C-C3AA
BrandZF
HK$55.91
Each
units
Button Solder 100 mA @ 30 V dc SPDT-NO/NC IP6K7 1.96 N -40°C +105°C - Gold - 1000000Operations - -40 → +105°C
RS Stock No. 517-791
Mfr. Part No.GPTCRM01
BrandZF
HK$153.05
Each
units
Short Roller Lever Screw 15 A @ 250 V ac SPDT-NO/NC - 1.56 N -20°C +85°C - Silver Alloy - 1000000Operations 0.39N -20 → +85°C
RS Stock No. 517-763
Mfr. Part No.DB1C-A1LC
BrandZF
HK$22.16
Each
units
Lever Solder 6 A @ 250 V ac SPDT-NO/NC - 0.49 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 706-4304
Mfr. Part No.DB1C-C1RB
BrandZF
HK$37.24
Each
units
Roller Lever Through Hole 6 A @ 250 V ac SPDT-NO/NC - 0.64 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 868-1824
Mfr. Part No.D449-R1RA-G2
BrandZF
HK$49.44
Each
units
Roller Lever Quick Connect 6 A @ 30 V dc, 10 A @ 125/250 V ac SPDT IP50 - -40°C +150°C - Silver Alloy Thermoplastic Polyester PET - - -40 → +150°C
RS Stock No. 868-1903
Mfr. Part No.D443-R1RD-G2
BrandZF
HK$51.12
Each
units
Roller Lever Quick Connect 6 A @ 30 V dc, 10 A @ 125/250 V ac SPDT IP50 - -40°C +150°C - Silver Alloy Thermoplastic Polyester PET - - -40 → +150°C
RS Stock No. 159-4455
Mfr. Part No.D459-V3RA
BrandZF
HK$23.15
Each (In a Pack of 5)
units
Short Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -40°C +85°C - Silver Alloy - - - -40 → +85°C
RS Stock No. 517-527
Mfr. Part No.GPTCNH01
BrandZF
HK$138.83
Each
units
Plunger Screw 15 A @ 250 V ac SPDT-NO/NC - 3.42 N -20°C +85°C - Silver Alloy - 1000000Operations 1.11N -20 → +85°C
RS Stock No. 706-4098
Mfr. Part No.E13-00M
BrandZF
HK$56.10
Each
units
Button Tab 15 A @ 250 V ac SPDT-NO/NC - 4.17 N - - - Silver Cadmium Oxide - - - -
RS Stock No. 320-506
Mfr. Part No.DC1C-C3AA
BrandZF
HK$60.54
Each
units
Button Through Hole 6 A @ 250 V ac SPDT-NO/NC IP6K7 1.96 N -40°C +105°C - Silver Alloy - 1000000Operations - -40 → +105°C