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. 706-4297
Mfr. Part No.DB1C-B1LB
BrandZF
$3.79
Each
units
Short Lever Tab 6 A @ 250 V ac SPDT-NO/NC - 0.59 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 686-6840
Mfr. Part No.SS-5GL13
BrandOmron
$2.86
Each (In a Bag of 5)
units
Simulated 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. 173-9381
Mfr. Part No.XCG3-Z1
$1.499
Each (In a Bag of 200)
units
Plunger Solder 5 A @ 250 V ac - - 1.69 N - - - Silver - - 0.3N -
RS Stock No. 173-9302
Mfr. Part No.V3SYR-UL
$25.121
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. 472-8055
Mfr. Part No.XCG3-Z1
$8.78
Each
units
Plunger Solder 5 A @ 250 V ac - - 1.69 N - - - Silver - - 0.3N -
RS Stock No. 472-8140
Mfr. Part No.XCG8-S1-Z1
$10.73
Each
units
Roller Lever PCB 6 A @ 250 V ac NO/NC IP40 0.7 N -40°C +85°C - Silver Phenolic Melamine 5 x 10^7Operations 0.09N -40 → +85°C
RS Stock No. 159-4663
Mfr. Part No.DB1C-C1RC
BrandZF
$5.89
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. 318-014
Mfr. Part No.V3SYR-UL
$57.64
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. 103-1667
Mfr. Part No.V-166-1C5(R)
BrandOmron
$8.32
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. 472-8257
Mfr. Part No.XGG2-88-S20Z1
$14.05
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. 472-8308
Mfr. Part No.V4NST7UL
$9.46
Each
units
Plunger Solder 5 A @ 250 V ac SPDT-NO/NC IP67 2.5 N -40°C +85°C - Fine Silver Glass Fibre Reinforced Nylon 5000000Operations 0.3N -40 → +85°C
RS Stock No. 227-5442
Mfr. Part No.D3B6-V3AA
BrandZF
$7.47
Each
units
Button Tab 10 A @ 250 V ac SPDT-NO/NC - 5 N -40°C +85°C - Silver Cadmium Oxide - - - -40 → +85°C
RS Stock No. 472-8314
Mfr. Part No.V4NST7Y1UL
$5.18
Each
units
Short Lever Solder 5 A @ 250 V ac SPDT-NO/NC IP67 0.9 N -40°C +85°C - Fine Silver Glass Fibre Reinforced Nylon 5000000Operations 0.07N -40 → +85°C
RS Stock No. 472-8241
Mfr. Part No.XGG2-88-J27Z1
$10.64
Each
units
Leaf Lever Tab 16 A @ 250 V ac SPDT-NO/NC IP40 0.65 N -40°C +85°C - Fine Silver; Silver Nickel Melamine Formaldehyd Thermosetting 50000000Operations - -40 → +85°C
RS Stock No. 159-4584
Mfr. Part No.DB1C-A1AA
BrandZF
$6.98
Each
units
Button Solder 6 A @ 250 V ac SPDT-NO/NC - 1.47 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS Stock No. 682-2777
Mfr. Part No.V-154-1C25
BrandOmron
$4.70
Each
units
Simulated Roller Lever Tab 15 A @ 250 V ac SPDT-NO/NC IP40 1.23 N -25°C +80°C - Silver Alloy - 50000000Operations 0.14N -25 → +80°C
RS Stock No. 173-9393
Mfr. Part No.V4NST7Y1UL
$3.432
Each (In a Bag of 50)
units
Short Lever Solder 5 A @ 250 V ac SPDT-NO/NC IP67 0.9 N -40°C +85°C - Fine Silver Glass Fibre Reinforced Nylon 5000000Operations 0.07N -40 → +85°C
RS Stock No. 616-0243
Mfr. Part No.D3V-165-1C5
BrandOmron
$5.60
Each
units
Short 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. 472-8279
Mfr. Part No.V4NSUL
$24.22
Each
units
Plunger Pre-wired 3 A @ 250 V ac SPDT-NO/NC IP67 2.5 N -40°C +85°C - Fine Silver Glass Fibre Reinforced Nylon 5000000Operations 0.3N -40 → +85°C
RS Stock No. 517-876
Mfr. Part No.GPTCRS01
BrandZF
$23.25
Each
units
Long Roller Lever Screw 15 A @ 250 V ac SPDT-NO/NC - 0.97 N -20°C +85°C - Silver Alloy - 1000000Operations 0.22N -20 → +85°C
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