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 Hazardous Area Certification
RS庫存編號 686-7688
製造零件編號D2F-01F-D
BrandOmron
HK$11.26
個 (以毎袋:5)
單位
Pin Plunger Solder 100 mA @ 30 V dc SPDT-NO/NC IP40 0.74 N -25°C +65°C - Gold Alloy - 1000000Operations 0.05N -
RS庫存編號 173-9389
製造零件編號XCF3-S1-Z1
HK$15.288
個 (以毎袋:200)
單位
Roller Lever Solder 10.1 A @ 250 V ac SPDT-NO/NC IP40 1.1 N -40°C +85°C - Fine Silver Thermosetting Formaldehyd Melamine 50000000Operations 0.17N -
RS庫存編號 517-791
製造零件編號GPTCRM01
BrandZF
HK$81.96
單位
Short Roller Lever Screw 15 A @ 250 V ac SPDT-NO/NC - 1.56 N -20°C +85°C - Silver Alloy - 1000000Operations 0.39N -
RS庫存編號 517-511
製造零件編號DC3C-C3AA
BrandZF
HK$55.91
單位
Button Solder 100 mA @ 30 V dc SPDT-NO/NC IP6K7 1.96 N -40°C +105°C - Gold - 1000000Operations - -
RS庫存編號 699-5263
製造零件編號AH14809A
BrandPanasonic
HK$19.59
單位
Pin Plunger PCB 1 A @ 30 V dc SPDT - 0.74 N -25°C +85°C - Silver Nickel Alloy - 10^6Operations 0.098N -
RS庫存編號 334-628
製造零件編號BZE7-2RN-C
BrandHoneywell
HK$604.52
單位
Plunger Screw 15 A @ 125 V ac SPDT-NO/NC IP65 - - - - - - - - -
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 -
RS庫存編號 820-7448
製造零件編號4SX1-T
BrandHoneywell
HK$135.83
單位
Pin Plunger Solder 7 A @ 250 V ac SPDT - 1.39 N -54°C +121°C - Silver Phenolic 10000000Operations 0.28N -
RS庫存編號 807-4466
製造零件編號D2VW-5L1-1MS
BrandOmron
HK$60.98
單位
Hinge Lever Wire Lead 3 A @ 125 V ac SPDT IP67 - -40°C +85°C D2 Housing Silver Alloy - 10000000Operations - -
RS庫存編號 682-0784
製造零件編號SS-01-FD
BrandOmron
HK$18.44
單位
Pin Plunger PCB 100 mA @ 30 V dc SPDT-NO/NC IP40 0.49 N -25°C +85°C - Gold Alloy - 30000000Operations 0.04N -
RS庫存編號 290-0479
製造零件編號DB2C-C1LB
BrandZF
HK$29.20
單位
Short Lever PCB 10.1 A @ 250 V ac SPDT-NO/NC - 0.98 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -
RS庫存編號 515-662
製造零件編號BZE7-2RQ8-C
BrandHoneywell
HK$798.00
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 -
RS庫存編號 173-8424
製造零件編號AV4024
BrandPanasonic
HK$24.50
個 (以毎盒:50)
單位
Hinge Lever Solder 500 mA @ 30 V dc SPDT - 0.25 N -25°C +80°C - Silver Plated - 3 x 10^5Operations - -
RS庫存編號 320-506
製造零件編號DC1C-C3AA
BrandZF
HK$53.45
單位
Button Through Hole 6 A @ 250 V ac SPDT-NO/NC IP6K7 1.96 N -40°C +105°C - Silver Alloy - 1000000Operations - -
RS庫存編號 706-4098
製造零件編號E13-00M
BrandZF
HK$47.63
單位
Button Tab 15 A @ 250 V ac SPDT-NO/NC - 4.17 N - - - Silver Cadmium Oxide - - - -
RS庫存編號 842-6343
製造零件編號311SM3-T
BrandHoneywell
HK$48.51
單位
Straight Lever Solder 5 A SPDT - 0.15 N -54°C +121°C - Gold Plated Silver Phenolic - 0.02N -
RS庫存編號 883-2054
製造零件編號XGG3-88Z1
HK$48,446.24
1 包 2000 套
Pack(s)
Plunger Solder 16 A SP-CO IP40 3.2 N -40°C +150°C - Silver, Silver Nickel Melamine-Formaldehyd 5000000Cycles 0.4N -
RS庫存編號 804-6259
BrandRS PRO
HK$35.78
單位
Long Roller 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 25gf -
RS庫存編號 334-404
製造零件編號BZ-2RW822-A2
BrandHoneywell
HK$116.84
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 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 - - - - - - - - - -