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. 505-9192
Mfr. Part No.KMR231G LFS
BrandC & K
MYR2.037
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. 153-4140
Mfr. Part No.LCS052P00SDC
BrandC & K
MYR11.466
Each (In a Tray of 100)
units
Pin Plunger Solder 5 A @ 125 / 250 V ac, 6 A @ 250 V ac SP-CO IP67 203 g -40°C +80°C - Copper Alloy Thermoplastic Polyester PET - - -40 → +85°C
RS Stock No. 161-2380
Mfr. Part No.ZMSH03130T10RSC
BrandC & K
MYR9.612
Each (In a Tray of 500)
units
Lever Through Hole 3 A @ 12 V dc, 3 A @ 125 V ac SP-CO IP67 130 g -40°C 85°C - Brass Polyamide - - -40 → +85°C
RS Stock No. 161-2447
Mfr. Part No.ZMSH03130P00LSC
BrandC & K
MYR10.86
Each
units
Pin Plunger Through Hole 3 A @ 12 V dc, 3 A @ 125 V ac SP-CO IP67 130 g -40°C 85°C - Brass Polyamide - - -40 → +85°C
RS Stock No. 153-4148
Mfr. Part No.MMGGF5L2T
BrandC & K
MYR110.674
Each (In a Tray of 50)
units
Leaf Pc Pin 1 A @ 125 V ac, 1 A @ 30 V dc SP-CO - 142 g -55°C +135°C - Copper Alloy Phenolic - - -55 → +135°C
RS Stock No. 154-4697
Mfr. Part No.LCA01150T06SC
BrandC & K
MYR8.702
Each (In a Pack of 5)
units
Lever Solder 100 mA @ 125 / 250 V ac SP-CO - 150 g -40°C +125°C - Copper Alloy Thermoplastic Polyester PET - - -40 → +125°C
RS Stock No. 161-2373
Mfr. Part No.ZMA00A150L04RC
BrandC & K
MYR5.55
Each (In a Tray of 100)
units
Lever Through Hole 100 mA @ 125 V ac, 100 mA @ 60 V dc SP-CO - 150 g -40°C +85°C - Brass PBT - - -40 → +85°C
RS Stock No. 153-4136
Mfr. Part No.LCA10150S06PC
BrandC & K
MYR11.003
Each (In a Tray of 500)
units
Simulated Roller Lever Pc Pin 10.1 A @ 125 / 250 V ac SP-CO - 150 g -40°C +125°C - Copper Alloy Thermoplastic Polyester PET - - -40 → +125°C
RS Stock No. 161-2381
Mfr. Part No.ZMSH03130T11RSC
BrandC & K
MYR9.912
Each (In a Tray of 500)
units
Simulated Roller Lever Through Hole 3 A @ 12 V dc, 3 A @ 125 V ac SP-CO IP67 130 g -40°C 85°C - Brass Polyamide - - -40 → +85°C
RS Stock No. 161-2438
Mfr. Part No.TF2CJK6VT1410C
BrandC & K
MYR19.04
Each
units
Simulated Roller Lever Solder 10 A @ 125 / 250 V ac SP-CO - 18 → 330 g -40°C 125°C - Brass Polyamide 400000 cycles, 1000000 cycles - -40 → +125°C
RS Stock No. 505-9057
Mfr. Part No.KSS231G LFS
BrandC & K
MYR2.562
Each (In a Pack of 10)
units
Standard Through Hole 50 mA @ 32 V dc SPST-NO IP 40 2.5 N -40°C +85°C - Silver - 100000Operations - -40 → +85°C
RS Stock No. 153-4146
Mfr. Part No.MDS6500AL02RL
BrandC & K
MYR7.034
Each (In a Pack of 500)
units
Standard Pc Pin 300 mA @ 30 V dc SP-CO - 50 g -25°C +70°C - Copper Alloy PA - - -25 → +70°C
RS Stock No. 153-4150
Mfr. Part No.MS-118305-A
BrandC & K
MYR2,908.12
1 Pack of 1000
Pack(s)
Lever Pc Pin 100 mA @ 30 V dc SP-CO - 25 gf -20°C +70°C - Silver Plated PBT 50000 cycles, 500000 cycles - -20 → +70°C
RS Stock No. 161-2376
Mfr. Part No.ZMA03A150L04RC
BrandC & K
MYR5.461
Each (In a Tray of 100)
units
Lever Through Hole 3 A @ 125 V ac, 3 A @ 24 V dc SP-CO - 150 g -40°C 85°C - Brass PBT - - -40 → +85°C
RS Stock No. 161-2432
Mfr. Part No.ZMA03A150L04RC
BrandC & K
MYR6.292
Each (In a Pack of 5)
units
Lever Through Hole 3 A @ 125 V ac, 3 A @ 24 V dc SP-CO - 150 g -40°C 85°C - Brass PBT - - -40 → +85°C
RS Stock No. 153-4135
Mfr. Part No.LCA06150T12QC
BrandC & K
MYR9.121
Each (In a Tray of 100)
units
Lever Quick Connect 6 A @ 125 / 250 V ac SP-CO - 150 g -40°C +125°C - Copper Alloy Thermoplastic Polyester PET - - -40 → +125°C
RS Stock No. 154-4705
Mfr. Part No.MDS6500AL02PS
BrandC & K
MYR8.18
Each (In a Pack of 5)
units
Standard Pc Pin 300 mA @ 30 V dc SP-CO - 50 g -25°C +70°C - Copper Alloy PA - - -25 → +70°C
RS Stock No. 153-4145
Mfr. Part No.MDS6500AL02PS
BrandC & K
MYR8.106
Each (In a Pack of 500)
units
Standard Pc Pin 300 mA @ 30 V dc SP-CO - 50 g -25°C +70°C - Copper Alloy PA - - -25 → +70°C
RS Stock No. 161-2369
Mfr. Part No.TMCJG6VP0010Y
BrandC & K
MYR21.686
Each (In a Pack of 50)
units
Pin Plunger Solder 1/2 A @ 125 V dc, 15 A @ 125 / 250 V ac SPST-NO - 150 g -55°C 150°C - Brass - - - -55 → +150°C
RS Stock No. 154-6143
Mfr. Part No.LCA10150S06PC
BrandC & K
MYR14.52
Each (In a Pack of 5)
units
Simulated Roller Lever Pc Pin 10.1 A @ 125 / 250 V ac SP-CO - 150 g -40°C +125°C - Copper Alloy Thermoplastic Polyester PET - - -40 → +125°C