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庫存編號 219-3766
製造零件編號83 160 329
BrandCrouzet
HK$73.52
單位
Roller Lever Tab 10 A @ 250 V ac SPDT - 2 N -20°C +125°C - Nickel Silver Polyamide 10^7Operations 0.6N -20 → +125°C
RS庫存編號 539-309
製造零件編號83137004
BrandCrouzet
HK$53.35
單位
- - - - - - - - - - - - - -
RS庫存編號 321-8210
製造零件編號83 161 118
BrandCrouzet
HK$33.09
單位
Button Tab 16 A @ 250 V ac SPDT-NO/NC IP40 3 N -20°C +125°C - Silver Nickel Polyamide 10000000Operations 1N -20 → +125°C
RS庫存編號 219-3788
製造零件編號83 160 347
BrandCrouzet
HK$60.50
單位
Lever Tab 10 A @ 250 V ac SPDT - 2 N -20°C +125°C - Nickel Silver Polyamide 10^7Operations 0.6N -20 → +125°C
RS庫存編號 161-4981
製造零件編號83137004
BrandCrouzet
HK$232.43
單位
Lever Tab 5 A @ 250 V ac SPDT-NO/NC - 0.12 N -20°C +125°C - Silver - 10000000Operations - -20 → +125°C
RS庫存編號 161-5574
製造零件編號83139003
BrandCrouzet
HK$345.95
單位
- - 6 A @ 250 V ac DPST - - 0°C +85°C - - - - - 0 → +85°C
RS庫存編號 307-3972
製造零件編號83 186 001
BrandCrouzet
HK$41.58
單位
Button Solder 6 A @ 250 V ac SPDT-NO/NC IP67 2.5 N -40°C +125°C - Gold Plated Silver Cadmium Oxide; Gold Plated Silver Tin Oxide - 2000000Operations 0.8N -40 → +125°C
RS庫存編號 700-5734
製造零件編號83240003
BrandCrouzet
HK$329.13
單位
Lever Tab 6 A @ 250 V ac DT-NO/NC IP40 4.5 N -50°C +85°C - Silver Nickel Glass Fibre Reinforced PC 10^7Operations - -50 → +85°C
RS庫存編號 700-5728
製造零件編號83240000
BrandCrouzet
HK$387.03
單位
Plunger Tab 6 A @ 250 V ac DT-NO/NC IP40 4.5 N -50°C +85°C - Silver Nickel Glass Fibre Reinforced PC 10^7Operations - -50 → +85°C
RS庫存編號 307-3988
製造零件編號83 186 002
BrandCrouzet
HK$43.60
單位
Button Solder 6 A @ 250 V ac SPDT-NO/NC IP67 2.5 N -40°C +125°C - Gold Plated Silver Cadmium Oxide; Gold Plated Silver Tin Oxide - 2000000Operations 0.8N -40 → +125°C
RS庫存編號 307-3994
製造零件編號83 170 405
BrandCrouzet
HK$31.00
單位
Plunger Solder 5 A @ 250 V ac NO/NC - 0.6 N -20°C +125°C - Silver Nickel PET 3 x 10^7Operations 0.1N -20 → +125°C
RS庫存編號 161-6713
製造零件編號83161-3 IW3 F2
BrandCrouzet
HK$34.81
單位
Plunger Tab 20 A @ 250 V ac NO/NC IP40 0.8 N -20°C +125°C V3 Housing Silver Nickel Polyamide 2 x 10^7Operations 0.2N -20 → +125°C
RS庫存編號 219-3794
製造零件編號83 186 003
BrandCrouzet
HK$77.46
單位
Button Solder 6 A @ 250 V ac SPDT-NO/NC IP67 2.5 N -40°C +125°C - Gold Plated Silver Cadmium Oxide; Gold Plated Silver Tin Oxide - 2000000Operations 0.8N -40 → +125°C
RS庫存編號 161-7312
製造零件編號83169002
BrandCrouzet
HK$197.45
單位
Plunger Pre-wired 8 A @ 250 V ac SPDT-NO/NC IP67 4.5 N -20°C +85°C - Silver Nickel - 5000000Operations 1N -20 → +85°C
RS庫存編號 321-8226
製造零件編號83 160 703
BrandCrouzet
HK$73.46
單位
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庫存編號 161-6640
製造零件編號83170-4 IW2 F1
BrandCrouzet
HK$29.82
單位
Button - 5 A @ 250 V ac NO/NC - 0.6 N -20°C +125°C V4 Housing Silver Nickel PET 3 x 10^7Operations 0.1N -20 → +125°C
RS庫存編號 161-6707
製造零件編號83161-3 IW2 F2
BrandCrouzet
HK$34.33
單位
Plunger Solder 20 A @ 250 V ac NO/NC IP40 0.8 N -20°C +125°C V3 Housing Silver Nickel Polyamide 2 x 10^7Operations 0.2N -20 → +125°C
RS庫存編號 161-7306
製造零件編號83 123 0-2,2M
BrandCrouzet
HK$735.98
單位
Standard - 5 A @ 250 V ac Single Pole Double Throw (SPDT) IP66 7.5 N 0°C +85°C - Silver Nitrile 2 x 10^6Operations 1.5N 0 → +85°C
RS庫存編號 219-3744
製造零件編號83160067
BrandCrouzet
HK$81.09
單位
Lever Tab 16 A @ 250 V ac SPDT - 4 N -20°C +125°C - Nickel Silver Polyamide 10^7Operations 1.5N -20 → +125°C
RS庫存編號 161-6656
製造零件編號83170-9IX1 F1
BrandCrouzet
HK$33.21
單位
Lever - 5 A @ 250 V ac NO/NC - 0.6 N -20°C +125°C V4 Housing Gold Plated Silver Nickel PET 3 x 10^7Operations 0.1N -20 → +125°C