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 515-690
製造零件編號V15T16-EZ100A06
BrandHoneywell
HK$30.98
單位
Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -25°C +125°C - Silver Cadmium Oxide Polybutylene Terephthalate PET Thermoplastic 5000000Operations 0.25N -25 → +125°C
RS庫存編號 338-282
製造零件編號BZ-2RW82-A2
BrandHoneywell
HK$140.59
單位
Roller Lever Screw 15 A @ 125 V ac SPDT-NO/NC - 0.97 N - - - - - - 0.21N -
RS庫存編號 338-298
製造零件編號BZ-2RW80-A2
BrandHoneywell
HK$103.59
單位
Lever Screw 15 A @ 125 V ac SPDT-NO/NC - 0.7 N - - - - - - 0.14N -
RS庫存編號 842-6365
製造零件編號311SM703-T
BrandHoneywell
HK$61.14
單位
Straight Lever Solder 4 A SPDT - 0.06 N -54°C +121°C - Gold Plated Silver Phenolic - 0.01N -54 → +121°C
RS庫存編號 515-662
製造零件編號BZE7-2RQ8-C
BrandHoneywell
HK$789.90
單位
Roller Lever 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庫存編號 820-7391
製造零件編號12SX1-T
BrandHoneywell
HK$178.39
單位
Pin Plunger Solder 1 A @ 125 V ac SPDT - 1.39 N -54°C +121°C - Gold Phenolic 10000000Operations 0.28N -54 → +121°C
RS庫存編號 820-7448
製造零件編號4SX1-T
BrandHoneywell
HK$151.25
單位
Pin Plunger Solder 7 A @ 250 V ac SPDT - 1.39 N -54°C +121°C - Silver Phenolic 10000000Operations 0.28N -54 → +121°C
RS庫存編號 334-628
製造零件編號BZE7-2RN-C
BrandHoneywell
HK$727.78
單位
Plunger Screw 15 A @ 125 V ac SPDT-NO/NC IP65 - - - - - - - - -
RS庫存編號 515-684
製造零件編號V15H16-CZ100A03
BrandHoneywell
HK$33.28
單位
Long Leaf Lever - 16 A @ 250 V ac SPDT-NO/NC - - - - - - - - - -
RS庫存編號 842-1733
製造零件編號V7-1C17E9
BrandHoneywell
HK$22.41
單位
Pin Plunger Quick Connect 15 A SPDT - 1.47 N -40°C +85°C V7 Housing Silver/Gold Plated/Gold Alloy Thermoplastic 10000000Cycles 0.25N -40 → +85°C
RS庫存編號 334-404
製造零件編號BZ-2RW822-A2
BrandHoneywell
HK$129.48
單位
Short Roller Lever Screw 15 A @ 125 V ac SPDT-NO/NC - 1.67 N - - - Fine Silver - - 0.42N -
RS庫存編號 842-6343
製造零件編號311SM3-T
BrandHoneywell
HK$63.39
單位
Straight Lever Solder 5 A SPDT - 0.15 N -54°C +121°C - Gold Plated Silver Phenolic - 0.02N -54 → +121°C
RS庫存編號 515-767
製造零件編號V15H22-CZ100A06
BrandHoneywell
HK$37.27
單位
Roller Lever - 22 A @ 250 V ac SPDT-NO/NC - - - - - - - - - -
RS庫存編號 842-1846
製造零件編號V7-5F17D8-336
BrandHoneywell
HK$79.76
單位
Paddle Lever Quick Connect 3 A SPDT - 0.02 N -40°C +85°C V7 Housing Silver/Gold Plated/Gold Alloy Thermoplastic 10000000Cycles - -40 → +85°C
RS庫存編號 842-1521
製造零件編號DT-2RV-A7
BrandHoneywell
HK$1,429.13
單位
Straight Lever Screw 10 A DPDT - 0.97 → 1.67 N -55°C +85°C - Silver Phenolic 3000000Operations 0.28N -55 → +85°C
RS庫存編號 820-7401
製造零件編號13AC1
BrandHoneywell
HK$439.49
單位
Rod Screw 15 A @ 250 V ac SPDT - - -18°C +149°C - Silver Stainless Steel - - -18 → +149°C
RS庫存編號 842-1874
製造零件編號V7-7B17D8
BrandHoneywell
HK$19.79
單位
Pin Plunger Quick Connect 11 A @ 250 V ac SPDT - 2.27 N -40°C +85°C V7 Housing Silver/Gold Plated/Gold Alloy Thermoplastic 10000000Cycles 0.56N -40 → +85°C
RS庫存編號 515-729
製造零件編號V15H22-CZ100
BrandHoneywell
HK$33.62
單位
Plunger - 22 A @ 250 V ac SPDT-NO/NC - - - - - - - - - -
RS庫存編號 842-6346
製造零件編號311SM4-T
BrandHoneywell
HK$61.54
單位
Roller Lever Solder 5 A SPDT - 0.39 N -54°C +121°C - Gold Plated Silver Phenolic - 0.07N -54 → +121°C
RS庫存編號 515-745
製造零件編號V15T16-EZ100
BrandHoneywell
HK$20.62
單位
Plunger Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -25°C +125°C - Silver Cadmium Oxide Polybutylene Terephthalate PET Thermoplastic 5000000Operations 0.25N -25 → +125°C