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. 804-6228
BrandRS PRO
€3.19
Each
units
Short Roller Lever Quick Connect 16 A @ 250 V ac SPDT - 400 gms -55 (Environmental)°C +85°C V3 Housing Silver on Copper Glass Filled Thermoplastic 10000000Operations 80gf -55 → +85 (Environmental)°C
RS Stock No. 175-8748
BrandRS PRO
€7.779
Each (In a Tray of 20)
units
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RS Stock No. 175-9417
BrandRS PRO
€8.09
1 Pack of 1
Pack(s)
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RS Stock No. 175-8782
BrandRS PRO
€5.125
Each (In a Tray of 20)
units
- - - - - - - - - - - - - -
RS Stock No. 804-6186
BrandRS PRO
€62.70
Each
units
Lever Screw 15 A @ 250 V ac SP - 510 gms - - Heavy Duty Zinc Alloy Silver - 1000000Operations 113gf -
RS Stock No. 797-2558
BrandRS PRO
€24.63
Each
units
Long Roller Lever Solder 5 A @ 250 V ac SP-CO IP67 200 gms -10°C +85°C - Silver Glass Fibre Reinforced Nylon 1000000Operations 40gf -10 → +85°C
RS Stock No. 175-8694
BrandRS PRO
€4.59
Each (In a Tray of 20)
units
- - - - - - - - - - - - - -
RS Stock No. 175-9438
BrandRS PRO
€8.09
1 Pack of 1
Pack(s)
- - - - - - - - - - - - - -
RS Stock No. 175-9570
BrandRS PRO
€4.30
1 Pack of 1
Pack(s)
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RS Stock No. 175-9578
BrandRS PRO
€4.30
1 Pack of 1
Pack(s)
- - - - - - - - - - - - - -
RS Stock No. 797-2555
BrandRS PRO
€9.72
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. 804-6253
BrandRS PRO
€1.714
Each (In a Bag of 5)
units
Plunger Solder 2 A @ 250 V ac SP - 100 gms -25°C +85°C - Silver Glass Filled Thermoplastic 500000 Operations @ 60 cpm 15gf -25 → +85°C
RS Stock No. 175-9523
BrandRS PRO
€4.30
1 Pack of 1
Pack(s)
- - - - - - - - - - - - - -
RS Stock No. 175-8611
BrandRS PRO
€4.055
Each (In a Tray of 20)
units
- - - - - - - - - - - - - -
RS Stock No. 175-8771
BrandRS PRO
€5.574
Each (In a Tray of 20)
units
- - - - - - - - - - - - - -
RS Stock No. 175-8601
BrandRS PRO
€4.055
Each (In a Tray of 20)
units
- - - - - - - - - - - - - -
RS Stock No. 175-8743
BrandRS PRO
€7.357
Each (In a Tray of 20)
units
- - - - - - - - - - - - - -
RS Stock No. 175-9443
BrandRS PRO
€8.09
1 Pack of 1
Pack(s)
- - - - - - - - - - - - - -
RS Stock No. 175-8715
BrandRS PRO
€4.055
Each (In a Tray of 20)
units
- - - - - - - - - - - - - -
RS Stock No. 797-2536
BrandRS PRO
€14.20
Each
units
Spring Plunger Screw 15 A @ 250 V ac SP-CO - 420 gms - - - Fine Silver Plastic 1000000Operations 170gf -
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