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. 301-2214
Mfr. Part No.13216
TWD570.00
Each
units
Plunger Screw 1 A @ 250 V ac SPDT IP40 3.3 N -40°C +240°C - Silver Polyphenylene Sulphide 10^7Operations 1.1N -40 → +240°C
RS Stock No. 842-6346
Mfr. Part No.311SM4-T
BrandHoneywell
TWD238.00
Each
units
Roller Lever Solder 5 A SPDT - 0.39 N -54°C +121°C - Gold Plated Silver Phenolic - 0.07N -54 → +121°C
RS Stock No. 472-8257
Mfr. Part No.XGG2-88-S20Z1
TWD132.00
Each
units
Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC IP40 3.2 N -40°C +85°C - Fine Silver; Silver Nickel Melamine Formaldehyd Thermosetting 50000000Operations 0.37N -40 → +85°C
RS Stock No. 197-7709
Mfr. Part No.NM09-0045
BrandZF
TWD314.00
Each
units
Lever Pre-wired 6 A @ 250 V ac SPDT - 2.3 N -40°C +105°C V4 Housing Silver Nickel PET 2 x 10^6Operations - -40 → +105°C
RS Stock No. 290-0441
Mfr. Part No.DB2C-A1RC
BrandZF
TWD55.00
Each
units
Roller Lever Solder 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. 682-2821
Mfr. Part No.VX-01-1A2
BrandOmron
TWD142.00
Each
units
Pin Plunger Solder 100 mA @ 30 V dc SPDT-NO/NC IP40 0.25 N -25°C +80°C - Gold Alloy - 10000000Operations 0.03N -25 → +80°C
RS Stock No. 698-9744
Mfr. Part No.ABS141644
BrandPanasonic
TWD171.00
Each
units
Roller Lever Solder 100 mA @ 30 V dc SPDT IP50 0.39 N -40°C +85°C - Double Clad Gold - 5 x 10^6Operations 0.034N -40 → +85°C
RS Stock No. 842-8709
Mfr. Part No.BZ-2RQ784
BrandHoneywell
TWD1,333.00
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. 682-2660
Mfr. Part No.SS-5GL2
BrandOmron
TWD65.20
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. 159-4657
Mfr. Part No.DB1C-C1LD
BrandZF
TWD230.00
Each
units
Long Hinge Lever Through Hole 6 A @ 250 V ac SPDT-NO/NC - 0.18 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 682-1519
Mfr. Part No.D2F-F
BrandOmron
TWD56.00
Each (In a Pack of 5)
units
Pin Plunger PCB 1 A @ 125 V ac SPDT-NO/NC IP40 0.74 N -25°C +65°C - Silver Alloy - 1000000Operations 0.05N -25 → +65°C
RS Stock No. 472-8178
Mfr. Part No.XCF3-J1-Z1
TWD89.00
Each
units
Hinge Lever Solder 10.1 A @ 250 V ac - - 1.04 N - - - Gold; Silver - - 0.16N -
RS Stock No. 842-8790
Mfr. Part No.BZ-2RW8244-A2
BrandHoneywell
TWD411.00
Each
units
Straight Lever Screw 5 A SPDT - 0.7 N -53°C +204°C - Silver Phenolic 20000000Operations 0.14N -53 → +204°C
RS Stock No. 173-9387
Mfr. Part No.XCF3-J1-Z1
TWD44.60
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. 301-2270
Mfr. Part No.F4T7Y1-UL
TWD97.00
Each
units
Hinge Lever Solder 5 A @ 250 V ac SP-NO/NC IP40 0.6 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 10^7Operations 0.07N -40 → +85°C
RS Stock No. 682-2724
Mfr. Part No.SSG-5L3P
BrandOmron
TWD81.00
Each
units
Simulated Roller Lever PCB 5 A @ 125 V ac SPDT-NO/NC IP40 0.6 N -25°C +125°C - Silver - 10000000Operations 0.06N -25 → +125°C
RS Stock No. 616-0473
Mfr. Part No.VX5-1A2
BrandOmron
TWD120.00
Each
units
Pin Plunger Solder 5 A @ 250 V ac SPDT-NO/NC IP40 0.25 N -25°C +80°C - Silver Alloy - 50000000Operations 0.03N -25 → +80°C
RS Stock No. 517-820
Mfr. Part No.DB3C-A1AA
BrandZF
TWD56.00
Each
units
Button Solder 100 mA @ 30 V dc SPDT-NO/NC - 1.47 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 616-0136
Mfr. Part No.D2F-01
BrandOmron
TWD28.20
Each (In a Pack of 5)
units
Pin Plunger PCB 100 mA @ 30 V dc SPDT-NO/NC IP40 1.47 N -25°C +65°C - Gold Alloy - 1000000Operations 0.2N -25 → +65°C
RS Stock No. 616-0114
Mfr. Part No.D2F-L
BrandOmron
TWD40.00
Each (In a Pack of 5)
units
Hinge Lever PCB 3 A @ 125 V ac SPDT-NO/NC IP40 0.78 N -25°C +65°C - Silver Alloy - 1000000Operations 0.05N -25 → +65°C