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. 682-0847
Mfr. Part No.SS-10GL2
BrandOmron
TWD103.00
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. 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. 505-9192
Mfr. Part No.KMR231G LFS
BrandC & K
TWD19.00
Each (In a Pack of 10)
units
Tactile Through Hole 50 mA @ 32 V dc SPST-NO - 3 N -40°C +85°C - Silver - 150000Operations - -40 → +85°C
RS Stock No. 616-0580
Mfr. Part No.D2SW-3M
BrandOmron
TWD330.00
Each
units
Pin Plunger Pre-wired 3 A @ 30 V dc SPDT-NO/NC IP67 1.77 N -40°C +85°C - Silver - 5000000Operations 0.29N -40 → +85°C
RS Stock No. 301-2286
Mfr. Part No.F4T7YC-UL
TWD207.00
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. 517-725
Mfr. Part No.DB3C-B1RC
BrandZF
TWD89.00
Each
units
Roller Lever Tab 100 mA @ 30 V dc SPDT-NO/NC - 0.54 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 682-1550
Mfr. Part No.D2F-L-T
BrandOmron
TWD50.40
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
RS Stock No. 173-9389
Mfr. Part No.XCF3-S1-Z1
TWD61.80
Each (In a Bag of 200)
units
Roller Lever Solder 10.1 A @ 250 V ac SPDT-NO/NC IP40 1.1 N -40°C +85°C - Fine Silver Thermosetting Formaldehyd Melamine 50000000Operations 0.17N -40 → +85°C
RS Stock No. 884-2861
Mfr. Part No.XCG3W-81-J1
TWD297,458.00
1 Pack of 2000
Pack(s)
Roller Solder 6 A SP-CO IP40 0.6 N -40°C +85°C - Gold Melamine-Formaldehyd 50000000Cycles 0.08N -40 → +85°C
RS Stock No. 307-4010
Mfr. Part No.83 170 902
BrandCrouzet
TWD144.00
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. 863-7089
Mfr. Part No.ZMA03A150L04PC
BrandC & K
TWD35.00
Each (In a Bag of 5)
units
Lever - 3 A SPDT - - -40°C +85°C - Silver - - - -
RS Stock No. 686-6994
Mfr. Part No.VX-5-1C22
BrandOmron
TWD115.00
Each
units
Pin Plunger Tab 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. 842-6560
Mfr. Part No.BZ-2RD
BrandHoneywell
TWD398.60
Each (In a Pack of 5)
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. 682-0790
Mfr. Part No.SS-01GL13-F
BrandOmron
TWD113.00
Each
units
Simulated Roller Lever Solder 100 mA @ 30 V dc SPDT-NO/NC IP40 0.16 N -25°C +85°C - Gold Alloy - 30000000Operations 0.02N -25 → +85°C
RS Stock No. 173-8351
Mfr. Part No.AVT3204
BrandPanasonic
TWD42.80
Each (In a Box of 100)
units
Pin Plunger Solder 3 A @ 250 V ac SPDT - 0.98 N -25°C +85°C - Silver Nickel Alloy - 5 x 10^5Operations 0.15N -25 → +85°C
RS Stock No. 472-8134
Mfr. Part No.XCG8-J1-Z1
TWD124.00
Each
units
Hinge Lever PCB 6 A @ 250 V ac NO/NC IP40 0.6 N -40°C +85°C - Silver Phenolic Melamine 5 x 10^7Operations 0.08N -40 → +85°C
RS Stock No. 699-0445
Mfr. Part No.AVT32023
BrandPanasonic
TWD42.00
Each
units
Pin Plunger Solder 3 A @ 250 V ac SPDT - 0.49 N -25°C +85°C - Silver Nickel Alloy - 5 x 10^5Operations 0.074N -25 → +85°C
RS Stock No. 616-0091
Mfr. Part No.D2F
BrandOmron
TWD43.00
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. 321-8226
Mfr. Part No.83 160 703
BrandCrouzet
TWD392.00
Each
units
Plunger Tab 6 A @ 250 V ac SP-NC - 4 N -40°C +85°C - Nickel Silver Polyamide 10^7Operations 1.5N -40 → +85°C
RS Stock No. 842-6374
Mfr. Part No.311SX1-T
BrandHoneywell
TWD542.00
Each
units
Straight Lever Solder 5 A SPDT - 0.49 N -54°C +121°C - Gold Plated Silver Phenolic 10000000Operations 0.09N -54 → +121°C