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. 173-8275
Mfr. Part No.ABS161651
BrandPanasonic
SGD16.837
Each (In a Box of 50)
units
Roller Lever Pre-wired 100 mA @ 30 V dc SPDT IP67 0.59 N -40°C +85°C - Triple Clad Gold - 5 x 10^6Operations 0.039N -40 → +85°C
RS Stock No. 698-9899
Mfr. Part No.ABS161651
BrandPanasonic
SGD19.54
Each
units
Roller Lever Pre-wired 100 mA @ 30 V dc SPDT IP67 0.59 N -40°C +85°C - Triple Clad Gold - 5 x 10^6Operations 0.039N -40 → +85°C
RS Stock No. 699-0104
Mfr. Part No.ASQ10410
BrandPanasonic
SGD4.33
Each
units
Pin Plunger Solder 100 mA @ 30 V dc SPDT IP67 1.5 N -40°C +85°C - Gold Plated - - - -40 → +85°C
RS Stock No. 173-8298
Mfr. Part No.ASQ10410
BrandPanasonic
SGD3.65
Each (In a Box of 100)
units
Pin Plunger Solder 100 mA @ 30 V dc SPDT IP67 1.5 N -40°C +85°C - Gold Plated - - - -40 → +85°C
RS Stock No. 173-8326
Mfr. Part No.ABV121651
BrandPanasonic
SGD10.263
Each (In a Box of 50)
units
Roller Lever Tab 3 A @ 250 V ac SPDT IP50 1.18 N -40°C +85°C - Gold Clad Silver Nickel Alloy PPHS 5 x 10^6Operations 0.13N -40 → +85°C
RS Stock No. 699-0268
Mfr. Part No.ABV121651
BrandPanasonic
SGD10.75
Each
units
Roller Lever Tab 3 A @ 250 V ac SPDT IP50 1.18 N -40°C +85°C - Gold Clad Silver Nickel Alloy PPHS 5 x 10^6Operations 0.13N -40 → +85°C
RS Stock No. 699-4591
Mfr. Part No.AVL32553
BrandPanasonic
SGD3.78
Each
units
Roller Lever Solder 5 A @ 250 V ac SPDT - 0.59 N -25°C +85°C - Silver Nickel Alloy - 10^7Operations 0.039N -25 → +85°C
RS Stock No. 173-8317
Mfr. Part No.ABV1210503
BrandPanasonic
SGD7.046
Each (In a Box of 50)
units
Pin Plunger Tab 5 A @ 250 V ac SPDT IP50 1.96 N -40°C +85°C - Silver Nickel Alloy PPHS 5 x 10^6Operations 0.39N -40 → +85°C
RS Stock No. 173-8441
Mfr. Part No.AVL32553
BrandPanasonic
SGD3.254
Each (In a Box of 100)
units
Roller Lever Solder 5 A @ 250 V ac SPDT - 0.59 N -25°C +85°C - Silver Nickel Alloy - 10^7Operations 0.039N -25 → +85°C
RS Stock No. 699-0211
Mfr. Part No.ABV1210503
BrandPanasonic
SGD7.81
Each
units
Pin Plunger Tab 5 A @ 250 V ac SPDT IP50 1.96 N -40°C +85°C - Silver Nickel Alloy PPHS 5 x 10^6Operations 0.39N -40 → +85°C
RS Stock No. 401-6582
Mfr. Part No.ESE24SV3
BrandPanasonic
SGD1.718
Each (In a Pack of 5)
units
Lever - 10 mA @ 5 V dc SPDT-NO/NC - - -10°C +70°C - - - - - -10 → +70°C
RS Stock No. 173-8440
Mfr. Part No.AVL32453
BrandPanasonic
SGD5.23
Each (In a Box of 100)
units
Simulated Roller Lever Solder 5 A @ 250 V ac SPDT IP40 0.54 N -25°C +85°C - Silver Nickel Alloy - 10^7Operations 0.034N -25 → +85°C
RS Stock No. 699-4588
Mfr. Part No.AVL32453
BrandPanasonic
SGD6.51
Each
units
Simulated Roller Lever Solder 5 A @ 250 V ac SPDT IP40 0.54 N -25°C +85°C - Silver Nickel Alloy - 10^7Operations 0.034N -25 → +85°C
RS Stock No. 698-9748
Mfr. Part No.ABS141651
BrandPanasonic
SGD7.76
Each
units
Roller Lever Solder 100 mA @ 30 V dc SPDT IP50 0.59 N -40°C +85°C - Triple Clad Gold - 5 x 10^6Operations 0.039N -40 → +85°C
RS Stock No. 699-0142
Mfr. Part No.ASQ10717
BrandPanasonic
SGD8.33
Each
units
Leaf Lever Right Angle PCB 100 mA @ 30 V dc SPDT-NO/NC IP67 1.7 N -40°C +85°C - Gold Plated - - - -40 → +85°C
RS Stock No. 699-0108
Mfr. Part No.ASQ10417
BrandPanasonic
SGD7.78
Each
units
Leaf Lever Solder 100 mA @ 30 V dc SPDT IP67 1.7 N -40°C +85°C - Gold Plated - - - -40 → +85°C
RS Stock No. 699-0643
Mfr. Part No.AVT38243
BrandPanasonic
SGD2.20
Each
units
Hinge Lever Tab 3 A @ 250 V ac SPDT - 0.34 N -25°C +85°C - Silver Nickel Alloy - 5 x 10^5Operations 0.029N -25 → +85°C
RS Stock No. 173-8259
Mfr. Part No.ABS141651
BrandPanasonic
SGD5.64
Each (In a Box of 100)
units
Roller Lever Solder 100 mA @ 30 V dc SPDT IP50 0.59 N -40°C +85°C - Triple Clad Gold - 5 x 10^6Operations 0.039N -40 → +85°C
RS Stock No. 173-8299
Mfr. Part No.ASQ10417
BrandPanasonic
SGD5.791
Each (In a Box of 100)
units
Leaf Lever Solder 100 mA @ 30 V dc SPDT IP67 1.7 N -40°C +85°C - Gold Plated - - - -40 → +85°C
RS Stock No. 173-8320
Mfr. Part No.ABV1212513
BrandPanasonic
SGD10.971
Each (In a Box of 50)
units
Hinge Lever Tab 3 A @ 250 V ac SPDT IP50 1.18 N -40°C +85°C - Gold Clad Silver Nickel Alloy PPHS 5 x 10^6Operations 0.13N -40 → +85°C