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. 907-4609
Mfr. Part No.1022.4501
BrandMarquardt
kr 183,25
Each
Units
Simulated Roller Lever Cable 2 A SPDT IP67 <2.5 N -40°C +85°C - Gold PBTP 100000Operations - -40 → +85°C
RS Stock No. 823-5002
Mfr. Part No.01055.2061-02
BrandMarquardt
kr 46,16
Each
Units
Button Pc Pin 4 A @ 12 V dc SPDT IP 00, IP 40, IP 67 ≤1.8 N -40°C +85°C - Ag Gold Plated PBTP 500000Cycles - -40 → +85°C
RS Stock No. 907-4463
Mfr. Part No.1005.1226
BrandMarquardt
kr 20,937
Each (In a Pack of 10)
Units
Standard Quick Connect 16 A SPNO - 2.4 → 3.8 N -40°C +100°C - Silver Duroplast Type 182, PA Glass Fiber-Reinforced, PA Latamid 50000Operations - -40 → +100°C
RS Stock No. 907-6797
Mfr. Part No.1058.0395
BrandMarquardt
kr 31,406
Each (In a Pack of 10)
Units
Standard Cable 2 A SPNC IP67 ≤1.8 N -40°C +85°C - Gold Plated, Silver PBTP 100000Operations - -40 → +85°C
RS Stock No. 907-6788
Mfr. Part No.1058.0351
BrandMarquardt
kr 61,49
Each
Units
Standard Cable 2 A SPDT IP67 ≤1.8 N -40°C +85°C - Gold Plated, Silver PBTP 100000Operations - -40 → +85°C
RS Stock No. 907-6706
Mfr. Part No.1048.1102
BrandMarquardt
kr 56,07
Each
Units
Standard Cable 3 A SPDT IP67 ≤2.6 N -40°C +100°C - Silver PA Laminated Glass Fiber-Reinforced 30000Operations - -40 → +100°C
RS Stock No. 907-4606
Mfr. Part No.1022.2201
BrandMarquardt
kr 180,76
Each
Units
Straight Lever Cable 2 A SPDT IP67 <2.5 N -40°C +85°C - Gold PBTP 100000Operations - -40 → +85°C
RS Stock No. 907-0109
Mfr. Part No.1065.0503
BrandMarquardt
kr 23,679
Each (In a Pack of 10)
Units
Standard Solder 100 mA SPDT IP00 ≤1.6 N -40°C +85°C - Gold Cobalt PBTP 200000Operations - -40 → +85°C
RS Stock No. 741-0744
Mfr. Part No.1050.6702
BrandMarquardt
kr 55,11
Each
Units
Roller Lever Tab 5 A @ 250 V ac SPDT IP00, IP40 0.6 N -40°C +100°C V2 Housing Silver PBTP 1000000Cycles 0.12N -40 → +100°C
RS Stock No. 907-6722
Mfr. Part No.1050.1426
BrandMarquardt
kr 21,685
Each (In a Pack of 10)
Units
Mushroom Shaped Quick Connect 5 A SPNO IP40 (Actuator) ≤1.5 N -40°C +100°C - Silver PBTP 50000Operations - -40 → +100°C
RS Stock No. 907-0118
Mfr. Part No.1065.5203
BrandMarquardt
kr 18,943
Each (In a Pack of 10)
Units
Differential Lever Solder 100 mA SPDT IP00 ≤2.8 N -40°C +85°C - Gold Cobalt PBTP 200000Operations - -40 → +85°C
RS Stock No. 823-5298
Mfr. Part No.01048.1132-00
BrandMarquardt
kr 106,98
Each
Units
Button Cable 3 A @ 250 V ac SPNO IP00, IP67 ≤2.6 N -40°C +100°C - Ag PA Laminated Glass Fiber-Reinforced 10000000Cycles - -40 → +100°C
RS Stock No. 823-4986
Mfr. Part No.01040.0114-00
BrandMarquardt
kr 175,75
Each
Units
Lever Quick Connect 4 A @ 250 V ac SPDT - 0.6 → 0.9 N -35°C +85°C - Ag PA Glass Fiber-Reinforced, PETP - - -35 → +85°C
RS Stock No. 907-6716
Mfr. Part No.1050.0802
BrandMarquardt
kr 24,177
Each (In a Pack of 10)
Units
Mushroom Shaped Solder 5 A SPDT IP40 (Actuator) ≤1.5 N -40°C +100°C - Silver PBTP 50000Operations - -40 → +100°C
RS Stock No. 907-6766
Mfr. Part No.1055.8155
BrandMarquardt
kr 32,403
Each (In a Pack of 10)
Units
Simulated Roller Lever Right Angle PCB 2 A SPDT IP67 ≤2.6 N -40°C +85°C - Gold Plated, Silver PBTP 100000Operations - -40 → +85°C
RS Stock No. 823-4973
Mfr. Part No.01006.1801-01
BrandMarquardt
kr 69,49
Each
Units
Lever Quick Connect 10 A @ 400 V ac SPDT - 1.5 → 2.5 N -40°C +100°C V0 Housing Ag Duroplast Type 182, PA Glass Fiber-Reinforced, PA Latamid - - -40 → +100°C
RS Stock No. 907-0156
Mfr. Part No.1080.5906
BrandMarquardt
kr 47,46
Each
Units
Straight Lever Quick Connect 16 A SPDT IP40 15.2 ± 1.2 N -40°C +125°C - Silver PA Glass Fiber-Reinforced, PETP Glass Fiber-Reinforced 2000000Operations - -40 → +125°C
RS Stock No. 823-4989
Mfr. Part No.01050.5305-00
BrandMarquardt
kr 70,23
Each
Units
Lever Solder 10 A @ 250 V ac SPDT IP 40 ≤0.6 N -40°C +100°C - - PBTP - - -40 → +100°C
RS Stock No. 741-0962
Mfr. Part No.1006.1511
BrandMarquardt
kr 61,26
Each
Units
Roller Lever Tab 10 A @ 250 V ac SPDT - 0.7 → 1.25 N -40°C +100°C V0 Housing Silver Thermosetting Plastic 5000000Cycles - -40 → +100°C
RS Stock No. 741-0748
Mfr. Part No.1050.7202
BrandMarquardt
kr 46,34
Each
Units
Hinge Lever PCB 5 A @ 250 V ac SPDT IP00, IP40 0.5 N -40°C +100°C V2 Housing Silver PBTP 1000000Cycles 0.1N -40 → +100°C