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. 301-2236
Mfr. Part No.F1NST8A1
SGD11.69
Each
units
Lever Through Hole 1 A @ 250 V ac SP-NO/NC IP54 0.6 N -40°C +85°C - Fine Silver Polyamide 10^7Operations 0.09N -40 → +85°C
RS Stock No. 173-9387
Mfr. Part No.XCF3-J1-Z1
SGD3.276
Each (In a Bag of 200)
units
Hinge Lever Solder 10.1 A @ 250 V ac - - 1.04 N - - - Gold; Silver - - 0.16N -
RS Stock No. 301-2286
Mfr. Part No.F4T7YC-UL
SGD10.84
Each
units
Simulated Roller Lever Solder 5 A @ 250 V ac SP-NO/NC IP40 0.7 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 10^7Operations 0.09N -40 → +85°C
RS Stock No. 515-666
Mfr. Part No.V15H16-CZ100A06
BrandHoneywell
SGD6.00
Each
units
Roller Lever - 16 A @ 250 V ac SPDT-NO/NC - - - - - - - - - -
RS Stock No. 325-7805
Mfr. Part No.V3SYR1-UL
SGD27.22
Each
units
Roller Lever Pre-wired 5 A @ 250 V ac SP-NO/NC IP67 2.3 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 10^6Operations 0.42N -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. 394-7766
Mfr. Part No.V-16-1C5(R)
BrandOmron
SGD5.50
Each
units
Plunger Tab 16 A @ 250 V ac SPDT-NO/NC IP40 1.96 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
SGD2.374
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. 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. 472-8061
Mfr. Part No.XCG3-J1-Z1
SGD9.60
Each
units
Hinge Lever Solder 5 A @ 250 V ac - - 0.59 N - - - Gold; Silver - - 0.08N -
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. 159-4663
Mfr. Part No.DB1C-C1RC
BrandZF
SGD6.63
Each
units
Roller Lever Through Hole 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. 741-0968
Mfr. Part No.1006.0701-02
BrandMarquardt
SGD7.97
Each
units
Roller Lever Solder 10 A @ 250 V ac SPDT - 1.5 → 2.5 N -40°C +100°C V0 Housing Silver Thermosetting Plastic 5000000Cycles - -40 → +100°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. 515-739
Mfr. Part No.V15T16-CZ100
BrandHoneywell
SGD6.67
Each
units
Plunger 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. 517-652
Mfr. Part No.DC3C-H1AA
BrandZF
SGD5.61
Each
units
Button Solder 100 mA @ 30 V dc SPDT-NO/NC IP6K7 1.96 N -40°C +120°C - Gold - 1000000Operations - -40 → +120°C
RS Stock No. 616-0401
Mfr. Part No.D2HW-BR211M
BrandOmron
SGD8.89
Each
units
Hinge Lever Pre-wired 2 A @ 12 V dc SPDT-NO/NC IP67 0.75 N -40°C +85°C - Gold Alloy - 1000000Operations 0.07N -40 → +85°C
RS Stock No. 334-404
Mfr. Part No.BZ-2RW822-A2
BrandHoneywell
SGD23.28
Each
units
Short Roller Lever Screw 15 A @ 125 V ac SPDT-NO/NC - 1.67 N - - - Fine Silver - - 0.42N -
RS Stock No. 700-5728
Mfr. Part No.83240000
BrandCrouzet
SGD54.20
Each
units
Plunger Tab 6 A @ 250 V ac DT-NO/NC IP40 4.5 N -50°C +85°C - Silver Nickel Glass Fibre Reinforced PC 10^7Operations - -50 → +85°C
RS Stock No. 616-0552
Mfr. Part No.D2SW-3L1D
BrandOmron
SGD5.16
Each
units
Hinge Lever PCB 3 A @ 30 V dc SPDT-NO/NC IP67 0.59 N -40°C +85°C - Silver - 5000000Operations 0.06N -40 → +85°C