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. 517-599
Mfr. Part No.DB1C-B1SC
BrandZF
TWD66.00
Each
units
Simulated Roller Lever Tab 6 A @ 250 V ac SPDT-NO/NC - 0.54 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 682-1493
Mfr. Part No.D2F-01F-T
BrandOmron
TWD63.60
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. 515-751
Mfr. Part No.V15T16-CZ100A05
BrandHoneywell
TWD136.00
Each
units
Short 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. 161-7312
Mfr. Part No.83169002
BrandCrouzet
TWD1,146.00
Each
units
Plunger Pre-wired 8 A @ 250 V ac SPDT-NO/NC IP67 4.5 N -20°C +85°C - Silver Nickel - 5000000Operations 1N -20 → +85°C
RS Stock No. 686-6837
Mfr. Part No.SS-01GL13
BrandOmron
TWD131.00
Each
units
Simulated Roller Lever Solder 100 mA @ 30 V dc SPDT-NO/NC IP40 0.49 N -25°C +85°C - Gold Alloy - 30000000Operations 0.06N -25 → +85°C
RS Stock No. 159-4629
Mfr. Part No.DB1C-A1RC
BrandZF
TWD74.00
Each
units
Roller Lever Solder 6 A @ 250 V ac SPDT-NO/NC IP50 0.54 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 616-0237
Mfr. Part No.D3V-162-1C5
BrandOmron
TWD58.00
Each
units
Hinge Lever Tab 16 A @ 250 V ac SPDT-NO/NC IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS Stock No. 515-741
Mfr. Part No.V15T16-CZ100A06
BrandHoneywell
TWD124.00
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. 686-7622
Mfr. Part No.V1561A5
BrandOmron
TWD123.20
Each (In a Bag of 5)
units
Roller 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. 842-6249
Mfr. Part No.111SM2-T
BrandHoneywell
TWD567.00
Each
units
Roller Lever Solder 5 A SP-CO - 1.95 N -54°C +121°C - Gold Plated Silver Phenolic 10000000Operations 0.56N -54 → +121°C
RS Stock No. 797-2514
BrandRS PRO
TWD236.00
Each
units
Roller Lever Screw 15 A @ 250 V ac SP-CO - 213 gms - - - Fine Silver Plastic 1000000Operations 35gf -
RS Stock No. 682-0787
Mfr. Part No.SS-01D
BrandOmron
TWD128.00
Each
units
Pin Plunger PCB 100 mA @ 30 V dc SPDT-NO/NC IP40 1.47 N -25°C +85°C - Gold Alloy - 30000000Operations 0.25N -25 → +85°C
RS Stock No. 538-8787
Mfr. Part No.DG13-B1LA
BrandZF
TWD103.80
Each (In a Pack of 5)
units
Hinge Lever PCB 3 A @ 125 V ac SPDT-NO/NC - 0.44 N -25°C +85°C - Silver Alloy - 1000000Operations - -25 → +85°C
RS Stock No. 807-3876
Mfr. Part No.EE-SB5
BrandOmron
TWD198.00
Each
units
- Solder 50 mA - - - -25°C +80°C - - - - - -25 → +80°C
RS Stock No. 682-2503
Mfr. Part No.D3V-16-3C5
BrandOmron
TWD94.60
Each (In a Pack of 5)
units
Pin Plunger Tab 16 A @ 250 V ac SPST-NO IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS Stock No. 682-2499
Mfr. Part No.D3V-16-3C4
BrandOmron
TWD126.20
Each (In a Pack of 5)
units
Pin Plunger Tab 16 A @ 250 V ac SPST-NO IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS Stock No. 682-0847
Mfr. Part No.SS-10GL2
BrandOmron
TWD106.00
Each
units
Roller Lever Solder 10.1 A @ 250 V ac SPDT-NO/NC IP40 0.49 N -25°C +85°C - Silver Alloy - 10000000Operations 0.06N -25 → +85°C
RS Stock No. 682-2578
Mfr. Part No.D3V-166-1A5
BrandOmron
TWD111.20
Each (In a Pack of 5)
units
Roller Lever Solder, Tab 16 A @ 250 V ac SPDT-NO/NC IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS Stock No. 682-0866
Mfr. Part No.SS-5GL
BrandOmron
TWD71.20
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. 616-0041
Mfr. Part No.SSG-5L1H
BrandOmron
TWD78.00
Each
units
Hinge Lever Solder 5 A @ 125 V ac SPDT-NO/NC IP40 0.6 N -25°C +125°C - Silver - 10000000Operations 0.06N -25 → +125°C