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. 907-0109
Mfr. Part No.1065.0503
BrandMarquardt
MYR14.508
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. 699-4453
Mfr. Part No.AV38523
BrandPanasonic
MYR9.13
Each
units
Roller Lever Tab 3 A @ 250 V ac SPDT - 0.2 N -25°C +85°C - Silver Nickel Alloy - 5 x 10^5Operations 0.017N -25 → +85°C
RS Stock No. 173-8382
Mfr. Part No.AVT38543
BrandPanasonic
MYR9.166
Each (In a Box of 100)
units
Roller Lever Tab 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. 161-5574
Mfr. Part No.83139003
BrandCrouzet
MYR188.78
Each
units
- - 6 A @ 250 V ac DPST - - 0°C +85°C - - - - - 0 → +85°C
RS Stock No. 842-6633
Mfr. Part No.BZ-2RQ1
BrandHoneywell
MYR122.30
Each
units
Plunger Screw 15 A SPDT - 2.5 → 3.61 N -55°C +85°C - Silver Phenolic 20000000Operations 1.11N -55 → +85°C
RS Stock No. 173-8237
Mfr. Part No.ABJ361841
BrandPanasonic
MYR36.73
Each (In a Box of 50)
units
Leaf Lever Pre-wired 100 mA @ 125 V ac SPDT IP67 0.98 N -40°C +85°C - Gold Clad Silver Nickel Alloy - 10^6Operations 0.2N -40 → +85°C
RS Stock No. 307-4010
Mfr. Part No.83 170 902
BrandCrouzet
MYR19.66
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. 154-6139
Mfr. Part No.MDS6500AL02RL
BrandC & K
MYR8.842
Each (In a Pack of 5)
units
Standard Pc Pin 300 mA @ 30 V dc SPDT - 50 g -25°C +70°C - Copper Alloy PA - - -25 → +70°C
RS Stock No. 741-0940
Mfr. Part No.1005.1001
BrandMarquardt
MYR28.15
Each
units
Plunger Tab 10 A @ 250 V ac SPDT - 1.5 → 2.5 N -40°C +100°C V0 Housing Silver Thermosetting Plastic 10000000Cycles - -40 → +100°C
RS Stock No. 173-8405
Mfr. Part No.AV4404
BrandPanasonic
MYR16.581
Each (In a Box of 50)
units
Pin Plunger PCB 500 mA @ 30 V dc SPDT - 0.98 N -25°C +80°C - Silver Plated - 3 x 10^5Operations - -25 → +80°C
RS Stock No. 161-2376
Mfr. Part No.ZMA03A150L04RC
BrandC & K
MYR4.763
Each (In a Tray of 100)
units
Lever Through Hole 3 A @ 125 V ac, 3 A @ 24 V dc SPDT - 150 g -40°C 85°C - Brass PBT - - -40 → +85°C
RS Stock No. 682-1569
Mfr. Part No.D2HW-BL201DL
BrandOmron
MYR12.11
Each
units
Pin Plunger Left Angle PCB 2 A @ 12 V dc SPDT-NO/NC IP67 0.75 N -40°C +85°C - Gold Alloy - 1000000Operations 0.1N -40 → +85°C
RS Stock No. 173-9371
Mfr. Part No.44606
MYR107.498
Each (In a Bag of 25)
units
Long Overtravel Tab 15 A @ 250 V ac SPDT IP67 5 N -10°C +85°C - - - 10^6Operations 1.7N -10 → +85°C
RS Stock No. 765-0343
Mfr. Part No.D2FD-2L0-1H
BrandOmron
MYR14.03
Each
units
Pin Plunger Solder Lug 2 A @ 30 V dc SPDT IP6X 2 N -20°C +70°C - Silver Alloy Rubber 300000Operations 0.25N -20 → +70°C
RS Stock No. 883-1675
Mfr. Part No.XGG6-88-P23Z1
MYR20.536
Each (In a Pack of 10)
units
- Faston 16 A SP-CO IP40 - -40°C +150°C - Silver, Silver Nickel Melamine-Formaldehyd 5000000Cycles - -40 → +150°C
RS Stock No. 682-1907
Mfr. Part No.D2HW-C213M
BrandOmron
MYR31.57
Each
units
Hinge Lever Pre-wired 2 A @ 12 V dc SPST-NO IP67 0.75 N -40°C +85°C - Gold Alloy - 1000000Operations 0.07N -40 → +85°C
RS Stock No. 517-624
Mfr. Part No.DB2C-B1SC
BrandZF
MYR12.54
Each
units
Simulated Roller Lever Tab 10.1 A @ 250 V ac SPDT-NO/NC - 0.93 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 153-4139
Mfr. Part No.LCS012P00QDC
BrandC & K
MYR9.24
Each (In a Tray of 100)
units
Pin Plunger Quick Connect 100 mA @ 125 / 250 V ac SPDT IP67 203 g -40°C +80°C - Copper Alloy Thermoplastic Polyester PET - - -40 → +85°C
RS Stock No. 907-0102
Mfr. Part No.1065.3653
BrandMarquardt
MYR10.172
Each (In a Pack of 10)
units
Standard Left Angle PCB 100 mA SPDT IP00 ≤1.6 N -40°C +85°C - Gold Cobalt PBTP 200000Operations - -40 → +85°C
RS Stock No. 699-0643
Mfr. Part No.AVT38243
BrandPanasonic
MYR7.20
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