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. 804-6209
BrandRS PRO
MYR16.08
Each
units
Push Button 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. 682-2786
Mfr. Part No.V-156-1C25
BrandOmron
MYR19.44
Each
units
Roller Lever Tab 15 A @ 250 V ac SPDT-NO/NC IP40 1.23 N -25°C +80°C - Silver Alloy - 50000000Operations 0.14N -25 → +80°C
RS Stock No. 161-7306
Mfr. Part No.83 123 0-2,2M
BrandCrouzet
MYR512.08
Each
units
Standard - 5 A @ 250 V ac Single Pole Double Throw (SPDT) IP66 7.5 N 0°C +85°C - Silver Nitrile 2 x 10^6Operations 1.5N 0 → +85°C
RS Stock No. 682-0866
Mfr. Part No.SS-5GL
BrandOmron
MYR7.864
Each (In a Pack of 5)
units
Hinge Lever Solder 5 A @ 125 V ac SPDT-NO/NC IP40 0.49 N -25°C +85°C - Silver - 30000000Operations 0.06N -25 → +85°C
RS Stock No. 616-0350
Mfr. Part No.D2MQ-4L-1-R
BrandOmron
MYR16.31
Each
units
Lever Through Hole 500 mA @ 30 V dc SPDT-NO/NC IP40 0.39 N -15°C +70°C - Silver Plated - 30000Operations 0.04N -15 → +70°C
RS Stock No. 515-741
Mfr. Part No.V15T16-CZ100A06
BrandHoneywell
MYR17.46
Each
units
Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -25°C +125°C - Silver Cadmium Oxide Polybutylene Terephthalate PET Thermoplastic 5000000Operations 0.25N -25 → +125°C
RS Stock No. 616-0338
Mfr. Part No.D2MQ-4L-1
BrandOmron
MYR12.64
Each
units
Lever Through Hole 500 mA @ 30 V dc SPDT-NO/NC IP40 0.39 N -15°C +70°C - Silver Plated - 30000Operations 0.04N -15 → +70°C
RS Stock No. 333-445
Mfr. Part No.BZ-2R-A2
BrandHoneywell
MYR72.35
Each
units
Pin Plunger Screw 15 A @ 125 V ac SPDT-NO/NC - 3.61 N - - - - - - 1.11N -
RS Stock No. 706-4174
Mfr. Part No.DH2C-C5PA
BrandZF
MYR15.78
Each
units
Lever Left Angle PCB 500 mA @ 30 V dc SPDT-NO/NC - 0.49 N -25°C +70°C - Gold Plated Brass - - - -25 → +70°C
RS Stock No. 682-2774
Mfr. Part No.V-155-1C25
BrandOmron
MYR17.61
Each
units
Short Roller Lever Tab 15 A @ 250 V ac SPDT-NO/NC IP40 2.35 N -25°C +80°C - Silver Alloy - 50000000Operations 0.49N -25 → +80°C
RS Stock No. 682-1478
Mfr. Part No.D2F-01F-D3
BrandOmron
MYR5.03
Each (In a Pack of 5)
units
Pin Plunger Solder 100 mA @ 30 V dc SPDT-NO/NC IP40 0.74 N -25°C +65°C - Gold Alloy - 1000000Operations 0.05N -25 → +65°C
RS Stock No. 196-186
Mfr. Part No.V-15-1A5
BrandOmron
MYR22.98
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
RS Stock No. 686-7629
Mfr. Part No.V1521A5
BrandOmron
MYR14.678
Each (In a Bag of 5)
units
Hinge Lever Solder 15 A @ 250 V ac SPDT-NO/NC IP40 1.23 N -25°C +80°C - Silver Alloy - 50000000Operations 0.14N -25 → +80°C
RS Stock No. 682-2660
Mfr. Part No.SS-5GL2
BrandOmron
MYR8.292
Each (In a Pack of 5)
units
Roller Lever Solder 5 A @ 125 V ac SPDT-NO/NC IP40 0.49 N -25°C +85°C - Silver - 30000000Operations 0.06N -25 → +85°C
RS Stock No. 820-7473
Mfr. Part No.BZ-2RQ1-A2
BrandHoneywell
MYR76.92
Each
units
Plunger Screw - Single Pole Double Throw (SPDT) IP65 - - - - - - - - -
RS Stock No. 616-0091
Mfr. Part No.D2F
BrandOmron
MYR6.09
Each (In a Pack of 5)
units
Pin Plunger PCB 3 A @ 125 V ac SPDT-NO/NC IP40 1.47 N -25°C +65°C - Silver Alloy - 1000000Operations 0.2N -25 → +65°C
RS Stock No. 196-215
Mfr. Part No.V-155-1A5
BrandOmron
MYR17.48
Each
units
Lever Solder 15 A @ 250 V ac, 15 A @ 8 V dc SPDT-NO/NC IP40 2.35 N -25°C +80°C - Silver Alloy - 50000000Operations 0.49N -25 → +80°C
RS Stock No. 682-1493
Mfr. Part No.D2F-01F-T
BrandOmron
MYR6.294
Each (In a Pack of 5)
units
Pin Plunger PCB 100 mA @ 30 V dc SPDT-NO/NC IP40 0.74 N -25°C +65°C - Gold Alloy - 1000000Operations 0.05N -25 → +65°C
RS Stock No. 539-309
Mfr. Part No.83137004
BrandCrouzet
MYR63.44
Each
units
- - - - - - - - - - - - - -
RS Stock No. 159-4455
Mfr. Part No.D459-V3RA
BrandZF
MYR16.40
Each (In a Pack of 5)
units
Short Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -40°C +85°C - Silver Alloy - - - -40 → +85°C