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. 173-8502
Mfr. Part No.AV32223
BrandPanasonic
MYR7.154
Each (In a Box of 100)
units
Hinge Lever Solder 3 A @ 250 V ac SPDT - 0.16 N -25°C +85°C - Silver Nickel Alloy - 5 x 10^5Operations 0.015N -25 → +85°C
RS Stock No. 173-8291
Mfr. Part No.ASQ10237
BrandPanasonic
MYR46.437
Each (In a Box of 100)
units
Leaf Lever Pre-wired 100 mA @ 30 V dc SPST-NO IP67 1.7 N -40°C +85°C - Gold Plated - - - -40 → +85°C
RS Stock No. 699-4765
Mfr. Part No.AVM3605613
BrandPanasonic
MYR4.27
Each
units
Pin Plunger Right Angle PCB 100 mA @ 30 V dc SPDT - 1.47 N -25°C +85°C - Triple Clad Gold - 10^7Operations 0.2N -25 → +85°C
RS Stock No. 804-6152
Mfr. Part No.D2FS-F-N
BrandOmron
MYR4.362
Each (In a Bag of 5)
units
Pin Plunger PCB Straight 100 mA @ 5 V dc SPST-NO IP40 0.85 N -20°C +70°C - Silver - 100000Operations 0.05N -20 → +70°C
RS Stock No. 682-2516
Mfr. Part No.D3V-164-2A5
BrandOmron
MYR7.954
Each (In a Pack of 5)
units
Simulated Roller Lever Solder, Tab 16 A @ 250 V ac SPST-NC IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS Stock No. 842-6407
Mfr. Part No.3SX1-T
BrandHoneywell
MYR88.72
Each
units
Pin Plunger Solder 1 A SPDT - 1.39 N -54°C +121°C - Gold Plated Silver Phenolic 1000000Operations 0.28N -54 → +121°C
RS Stock No. 804-6240
BrandRS PRO
MYR13.52
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. 706-4102
Mfr. Part No.E14-00M
BrandZF
MYR37.35
Each
units
Button Tab 25 A @ 250 V ac SPDT-NO/NC - 8.34 N - - - Silver Cadmium Oxide - - - -
RS Stock No. 842-1717
Mfr. Part No.V7-1C13D8-201
BrandHoneywell
MYR11.96
Each
units
Roller Lever Quick Connect 15 A SPDT - 1.72 N -40°C +85°C V7 Housing Silver/Gold Plated/Gold Alloy Thermoplastic 10000000Cycles 0.19N -40 → +85°C
RS Stock No. 823-5267
Mfr. Part No.01045.7102-00
BrandMarquardt
MYR18.85
Each
units
Lever Pc Pin 6 A @ 250 V ac SPDT IP67 ≤0.9 N -40°C +100°C - Ag PA Laminated Glass Fiber-Reinforced 10000000Cycles - -40 → +100°C
RS Stock No. 175-8598
BrandRS PRO
MYR21.987
Each (In a Tray of 20)
units
- - - - - - - - - - - - - -
RS Stock No. 173-8369
Mfr. Part No.AVT32544
BrandPanasonic
MYR10.185
Each (In a Box of 100)
units
Roller Lever Solder 3 A @ 250 V ac SPDT - 0.039 N -25°C +85°C - Silver Nickel Alloy - 5 x 10^5Operations 0.034N -25 → +85°C
RS Stock No. 686-6796
Mfr. Part No.D2SW-P2L2H
BrandOmron
MYR13.03
Each
units
Roller Lever Solder 2 A @ 250 V ac SPDT-NO/NC IP67 0.6 N -20°C +70°C - Silver Alloy - 1000000Operations 0.05N -20 → +70°C
RS Stock No. 699-0631
Mfr. Part No.AVT38223
BrandPanasonic
MYR6.80
Each
units
Hinge Lever Tab 3 A @ 250 V ac SPDT - 0.12 N -25°C +85°C - Silver Nickel Alloy - 5 x 10^5Operations 0.012N -25 → +85°C
RS Stock No. 512-7958
Mfr. Part No.D413 V3AA
BrandZF
MYR9.312
Each (In a Pack of 5)
units
Button Tab 100 mA @ 250 V ac SPDT-NO/NC - 0.735 N -40°C +85°C - Gold - - - -40 → +85°C
RS Stock No. 307-4010
Mfr. Part No.83 170 902
BrandCrouzet
MYR19.27
Each
units
Plunger Solder 100 mA @ 250 V ac SPDT - 0.6 N -20°C +125°C V4 Housing Silver Nickel PET 3 x 10^7Operations 0.1N -20 → +125°C
RS Stock No. 820-7448
Mfr. Part No.4SX1-T
BrandHoneywell
MYR73.24
Each
units
Pin Plunger Solder 7 A @ 250 V ac SPDT - 1.39 N -54°C +121°C - Silver Phenolic 10000000Operations 0.28N -54 → +121°C
RS Stock No. 173-8810
Mfr. Part No.AVM38553
BrandPanasonic
MYR11.154
Each (In a Box of 100)
units
Roller Lever Tab 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. 517-911
Mfr. Part No.GPTCRH01
BrandZF
MYR69.55
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. 616-0063
Mfr. Part No.SSG-5P
BrandOmron
MYR7.55
Each
units
Pin Plunger PCB 5 A @ 125 V ac SPDT-NO/NC IP40 1.5 N -25°C +125°C - Silver - 10000000Operations 0.25N -25 → +125°C
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