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. 539-309
Mfr. Part No.83137004
BrandCrouzet
MYR44.44
Each
units
- - - - - - - - - - - - - -
RS Stock No. 103-1667
Mfr. Part No.V-166-1C5(R)
BrandOmron
MYR15.70
Each
units
Long Roller Lever Tab 16 A @ 250 V ac SPDT IP40 1.96 N -25°C +80°C - Silver Alloy Thermoplastic 50000000Operations 0.14N -25 → +80°C
RS Stock No. 616-0221
Mfr. Part No.D3V-166-1C5
BrandOmron
MYR11.23
Each
units
Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS Stock No. 159-4590
Mfr. Part No.DB1C-A1LB
BrandZF
MYR7.67
Each
units
Short Lever Solder 6 A @ 250 V ac SPDT-NO/NC IP50 0.59 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 173-9302
Mfr. Part No.V3SYR-UL
MYR93.304
Each (In a Bag of 50)
units
Short Roller Lever Pre-wired 5 A @ 250 V ac SP-NO/NC IP67 3.9 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 10^6Operations 0.4N -40 → +85°C
RS Stock No. 318-014
Mfr. Part No.V3SYR-UL
MYR123.38
Each
units
Short Roller Lever Pre-wired 5 A @ 250 V ac SP-NO/NC IP67 3.9 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 10^6Operations 0.4N -40 → +85°C
RS Stock No. 842-6380
Mfr. Part No.311SX4-T
BrandHoneywell
MYR87.96
Each
units
Roller Lever Solder 5 A SPDT - 0.58 N -54°C +121°C - Gold Plated Silver Phenolic 10000000Operations 0.11N -54 → +121°C
RS Stock No. 334-404
Mfr. Part No.BZ-2RW822-A2
BrandHoneywell
MYR80.88
Each
units
Short Roller Lever Screw 15 A @ 125 V ac SPDT-NO/NC - 1.67 N - - - Fine Silver - - 0.42N -
RS Stock No. 173-8340
Mfr. Part No.ABV1616503
BrandPanasonic
MYR49.789
Each (In a Box of 50)
units
Roller Lever Pre-wired 5 A @ 250 V ac SPDT IP67 1.18 N -40°C +85°C - Silver Nickel Alloy PPHS 5 x 10^6Operations 0.13N -40 → +85°C
RS Stock No. 794-4020
Mfr. Part No.V1551C5
BrandOmron
MYR16.86
Each
units
Roller Lever Quick Connect 15 A @ 250 V ac SPDT IP40 2.35 N -25°C +80°C - Silver Alloy - 50000000Operations - -25 → +80°C
RS Stock No. 699-0375
Mfr. Part No.ABV1616503
BrandPanasonic
MYR86.77
Each
units
Roller Lever Pre-wired 5 A @ 250 V ac SPDT IP67 1.18 N -40°C +85°C - Silver Nickel Alloy PPHS 5 x 10^6Operations 0.13N -40 → +85°C
RS Stock No. 159-4663
Mfr. Part No.DB1C-C1RC
BrandZF
MYR13.48
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. 159-4607
Mfr. Part No.DB1C-A1LD
BrandZF
MYR16.98
Each
units
Long Hinge Lever Solder 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. 515-694
Mfr. Part No.BZE7-2RQ-C
BrandHoneywell
MYR324.11
Each
units
Plunger Screw 15 A @ 250 V ac SPDT IP50 2.5 N -30°C +71°C - Hardened Steel Aluminium 1000000Operations 1.11N -30 → +71°C
RS Stock No. 456-4637
Mfr. Part No.V4LS
MYR47.76
Each
units
Plunger Pre-wired 5 A @ 250 V ac SP-NO/NC IP6K7 2.5 N -40°C +85°C - Fine Silver Glass Fibre Reinforced PA 10^5Operations 0.5N -40 → +85°C
RS Stock No. 616-0136
Mfr. Part No.D2F-01
BrandOmron
MYR6.16
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. 616-0029
Mfr. Part No.SSG-5H
BrandOmron
MYR6.18
Each
units
Pin Plunger Solder 5 A @ 125 V ac SPDT-NO/NC IP40 1.5 N -25°C +125°C - Silver - 10000000Operations 0.25N -25 → +125°C
RS Stock No. 616-0237
Mfr. Part No.D3V-162-1C5
BrandOmron
MYR7.28
Each
units
Hinge Lever Tab 16 A @ 250 V ac SPDT-NO/NC IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS Stock No. 173-9373
Mfr. Part No.44710
MYR33.328
Each (In a Bag of 20)
units
Plunger Pre-wired 5 A @ 250 V ac SP-NO/NC IP6K7 2.5 N -40°C +85°C - Fine Silver Glass Fibre Reinforced PA 10^5Operations 0.5N -40 → +85°C
RS Stock No. 804-6237
BrandRS PRO
MYR6.50
Each
units
Short Lever Quick Connect 16 A @ 250 V ac SPDT - 400 gms -55 (Environmental)°C +85°C V3 Housing Silver on Copper Glass Filled Thermoplastic 10000000Operations 80gf -55 → +85 (Environmental)°C
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