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. 173-8814
Mfr. Part No.AH1480619-A
BrandPanasonic
HK$12.36
Each (In a Tube of 50)
units
Pin Plunger PCB 100 mA @ 30 V dc SPDT-NO/NC - 0.74 N -25°C +85°C - Gold Clad Silver Nickel Alloy - 1000000Operations 0.098N -25 → +85°C
RS Stock No. 699-5250
Mfr. Part No.AH1480619-A
BrandPanasonic
HK$24.98
Each
units
Pin Plunger PCB 100 mA @ 30 V dc SPDT-NO/NC - 0.74 N -25°C +85°C - Gold Clad Silver Nickel Alloy - 1000000Operations 0.098N -25 → +85°C
RS Stock No. 173-9130
Mfr. Part No.AH14809A
BrandPanasonic
HK$9.41
Each (In a Tube of 50)
units
Pin Plunger PCB 1 A @ 30 V dc SPDT - 0.74 N -25°C +85°C - Silver Nickel Alloy - 10^6Operations 0.098N -25 → +85°C
RS Stock No. 699-5263
Mfr. Part No.AH14809A
BrandPanasonic
HK$19.59
Each
units
Pin Plunger PCB 1 A @ 30 V dc SPDT - 0.74 N -25°C +85°C - Silver Nickel Alloy - 10^6Operations 0.098N -25 → +85°C
RS Stock No. 173-8424
Mfr. Part No.AV4024
BrandPanasonic
HK$14.03
Each (In a Box of 50)
units
Hinge Lever Solder 500 mA @ 30 V dc SPDT - 0.25 N -25°C +80°C - Silver Plated - 3 x 10^5Operations - -25 → +80°C
RS Stock No. 699-4471
Mfr. Part No.AV4024
BrandPanasonic
HK$16.09
Each
units
Hinge Lever Solder 500 mA @ 30 V dc SPDT - 0.25 N -25°C +80°C - Silver Plated - 3 x 10^5Operations - -25 → +80°C
RS Stock No. 699-5294
Mfr. Part No.AH1562619-A
BrandPanasonic
HK$21.83
Each
units
Hinge Lever PCB 100 mA @ 30 V dc SPDT-NO/NC - 0.49 N -25°C +85°C - Gold Clad Silver Nickel Alloy - 500000Operations 0.049N -25 → +85°C
RS Stock No. 173-9120
Mfr. Part No.AH1562619-A
BrandPanasonic
HK$12.939
Each (In a Tube of 50)
units
Hinge Lever PCB 100 mA @ 30 V dc SPDT-NO/NC - 0.49 N -25°C +85°C - Gold Clad Silver Nickel Alloy - 500000Operations 0.049N -25 → +85°C
RS Stock No. 699-0237
Mfr. Part No.ABV1214513
BrandPanasonic
HK$42.19
Each
units
Simulated Roller Lever Tab 3 A @ 250 V ac SPDT IP50 1.18 N -40°C +85°C - Gold Clad Silver Nickel Alloy PPHS 5 x 10^6Operations 0.13N -40 → +85°C
RS Stock No. 173-9122
Mfr. Part No.AH148461A
BrandPanasonic
HK$13.463
Each (In a Tube of 50)
units
Simulated Roller Lever PCB 100 mA @ 30 V dc SPDT IP40 0.26 N -25°C +85°C - Gold Clad Silver Nickel Alloy - 10^6Operations 0.02N -25 → +85°C
RS Stock No. 699-4649
Mfr. Part No.AVL3805613
BrandPanasonic
HK$21.84
Each
units
Pin Plunger Tab 100 mA @ 30 V dc SPDT - 1.47 N -25°C +85°C - Triple Clad Gold - 10^7Operations 0.2N -25 → +85°C
RS Stock No. 699-4207
Mfr. Part No.AM50011C53A
BrandPanasonic
HK$27.50
Each
units
Short Hinge Lever Tab 100 mA @ 30 V dc SPDT - 2.16 N -25°C +105°C - Gold Alloy - 10^7Operations 0.39N -25 → +105°C
RS Stock No. 173-9123
Mfr. Part No.AH168461A
BrandPanasonic
HK$13.463
Each (In a Tube of 50)
units
Simulated Roller Lever Solder 100 mA @ 30 V dc SPDT IP40 0.26 N -25°C +85°C - Gold Clad Silver Nickel Alloy - 10^6Operations 0.02N -25 → +85°C
RS Stock No. 699-5355
Mfr. Part No.AH168461A
BrandPanasonic
HK$18.65
Each
units
Simulated Roller Lever Solder 100 mA @ 30 V dc SPDT IP40 0.26 N -25°C +85°C - Gold Clad Silver Nickel Alloy - 10^6Operations 0.02N -25 → +85°C
RS Stock No. 173-9109
Mfr. Part No.AH16609A
BrandPanasonic
HK$9.41
Each (In a Tube of 50)
units
Pin Plunger Solder 2 A @ 30 V dc SPDT - 1.47 N -25°C +85°C - Silver Nickel Alloy - 5 x 10^5Operations 0.29N -25 → +85°C
RS Stock No. 173-9129
Mfr. Part No.AH14609A
BrandPanasonic
HK$8.90
Each (In a Tube of 50)
units
Pin Plunger PCB 2 A @ 30 V dc SPDT - 1.47 N -25°C +85°C - Silver Nickel Alloy - 5 x 10^5Operations 0.29N -25 → +85°C
RS Stock No. 699-5314
Mfr. Part No.AH16609A
BrandPanasonic
HK$20.39
Each
units
Pin Plunger Solder 2 A @ 30 V dc SPDT - 1.47 N -25°C +85°C - Silver Nickel Alloy - 5 x 10^5Operations 0.29N -25 → +85°C
RS Stock No. 699-0293
Mfr. Part No.ABV1236503
BrandPanasonic
HK$73.02
Each
units
Roller Lever Tab 5 A @ 250 V ac SPST-NO IP50 1.18 N -40°C +85°C - Silver Nickel Alloy PPHS 5 x 10^6Operations 0.13N -40 → +85°C
RS Stock No. 173-8272
Mfr. Part No.ABS161640
BrandPanasonic
HK$61.581
Each (In a Box of 50)
units
Roller Lever Pre-wired 2 A @ 30 V dc SPDT IP67 0.39 N -40°C +85°C - Silver Nickel Alloy - 5 x 10^6Operations 0.034N -40 → +85°C
RS Stock No. 698-9883
Mfr. Part No.ABS161640
BrandPanasonic
HK$77.94
Each
units
Roller Lever Pre-wired 2 A @ 30 V dc SPDT IP67 0.39 N -40°C +85°C - Silver Nickel Alloy - 5 x 10^6Operations 0.034N -40 → +85°C