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. 804-6275
BrandRS PRO
SGD6.33
Each
units
Button Quick Connect 16 A @ 250 V ac DP - 800 gms - +85°C - Silver - - 160gf Maximum of +85°C
RS Stock No. 797-2505
BrandRS PRO
SGD29.40
Each
units
Plunger Screw 15 A @ 250 V ac SP-CO - 720 gms - - - Fine Silver Metal 1000000Operations 170gf -
RS Stock No. 804-6231
BrandRS PRO
SGD12.74
Each
units
Plunger Quick Connect 6 A @ 400 V ac SPDT-NO/NC IP40 600 gms -20°C +85°C V0 Housing Silver - 1 x 10⁶Operations - -20 → +85°C
RS Stock No. 797-2517
BrandRS PRO
SGD10.74
Each
units
Roller Lever Screw 15 A @ 250 V ac SP-CO - 131 gms - - - Fine Silver Plastic 1000000Operations 21gf -
RS Stock No. 797-2555
BrandRS PRO
SGD13.44
Each
units
Lever Solder 10 A @ 250 V ac DP - 100 gms -65°C +125°C - Silver - 1000000Operations 15gf -65 → +125°C
RS Stock No. 797-2542
BrandRS PRO
SGD18.41
Each
units
Pin Plunger Cable 5 A @ 250 V ac SP-CO IP67 390 gms -10°C +85°C - Silver Glass Fibre Reinforced Nylon 1000000Operations 110gf -10 → +85°C
RS Stock No. 804-6240
BrandRS PRO
SGD5.49
Each
units
Button Quick Connect 16 A @ 250 V ac SPDT - 400 gms -55 (Environmental)°C +85°C V3 Housing Silver Glass Filled Thermoplastic 10000000Operations 80gf -55 → +85 (Environmental)°C
RS Stock No. 804-6247
BrandRS PRO
SGD7.29
Each
units
Button Quick Connect 16 A @ 250 V ac DP - 800 gms - +85°C - Silver - - 160gf Maximum of +85°C
RS Stock No. 797-2520
BrandRS PRO
SGD11.96
Each
units
Lever Screw 15 A @ 250 V ac SP-CO - 185 gms - - - Fine Silver Plastic 1000000Operations 35gf -
RS Stock No. 797-2533
BrandRS PRO
SGD27.62
Each
units
Spring Plunger Screw 15 A @ 250 V ac SP-CO - 422 gms - - - Fine Silver Plastic 1000000Operations 170gf -
RS Stock No. 797-2561
BrandRS PRO
SGD12.89
Each
units
Cap Quick Connect 16 A @ 250 V ac DP-CO - 800 gms - +85°C - Silver - - 160gf Maximum of +85°C
RS Stock No. 150-710
Mfr. Part No.DC1C-A1LD
BrandZF
SGD5.49
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. 290-0435
Mfr. Part No.DB2C-A1LB
BrandZF
SGD3.29
Each
units
Short Lever Solder 10.1 A @ 250 V ac SPDT-NO/NC - 0.98 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 539-309
Mfr. Part No.83137004
BrandCrouzet
SGD16.37
Each
units
- - - - - - - - - - - - - -
RS Stock No. 294-5905
Mfr. Part No.DC1C-A1AA
BrandZF
SGD6.43
Each
units
Button Solder 10 A @ 250 V ac SPDT-NO/NC IP6K7 1.96 N -40°C +120°C - Silver Alloy - 1000000Operations - -40 → +120°C
RS Stock No. 196-192
Mfr. Part No.V-153-1A5
BrandOmron
SGD5.19
Each
units
Long Hinge Lever Solder 15 A SPDT IP40 1.96 N -25°C +80°C - Silver Alloy Thermosetting Resin 50000000Cycles 0.06N -25 → +80°C
RS Stock No. 290-0429
Mfr. Part No.DB2C-A1AA
BrandZF
SGD3.02
Each
units
Button Solder 10.1 A @ 250 V ac SPDT-NO/NC - 2.45 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 842-6586
Mfr. Part No.BZ-2RDS-A2-S
BrandHoneywell
SGD46.69
Each
units
Plunger Screw 15 A SPDT - 3.61 → 5.28 N -55°C +85°C - Silver Phenolic 20000000Operations 1.11N -55 → +85°C
RS Stock No. 686-6828
Mfr. Part No.SS-5GL2-F
BrandOmron
SGD3.508
Each (In a Bag of 5)
units
Roller Lever Solder 5 A @ 125 V ac SPDT-NO/NC IP40 0.16 N -25°C +85°C - Silver - 30000000Operations 0.02N -25 → +85°C
RS Stock No. 196-186
Mfr. Part No.V-15-1A5
BrandOmron
SGD6.82
Each
units
Plunger Solder 15 A @ 250 V ac, 15 A @ 8 V dc SPDT-NO/NC IP40 1.96 N -25°C +80°C - Silver Alloy - 50000000Operations 0.49N -25 → +80°C
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