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 173-9321
製造零件編號42681
HK$25.864
個 (以毎袋:50)
單位
Roller Lever Tab 10 A @ 250 V ac SPST-NC IP40 5 N -40°C +85°C - Silver (Stationary); Silver Nickel (Movable) Glass Fibre Reinforced Nylon 10^6Operations 5.5N -
RS庫存編號 682-1503
製造零件編號D2F-01-T
BrandOmron
HK$10.184
/個 (每包:5個)
單位
Pin Plunger PCB 100 mA @ 30 V dc SPDT-NO/NC IP40 1.47 N -25°C +65°C - Gold Alloy - 1000000Operations 0.2N -
RS庫存編號 472-8207
製造零件編號XGG2-88Z1
HK$32.97
單位
Button 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 0.4N -
RS庫存編號 682-0879
製造零件編號V-16-3C5(R)
BrandOmron
HK$13.95
單位
Pin Plunger Tab 16 A @ 250 V ac SPST-NO IP40 1.96 N -25°C +80°C - Silver Alloy Thermoplastic 50000000Operations 0.49N -
RS庫存編號 682-2503
製造零件編號D3V-16-3C5
BrandOmron
HK$14.084
/個 (每包:5個)
單位
Pin Plunger Tab 16 A @ 250 V ac SPST-NO IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -
RS庫存編號 706-4228
製造零件編號D443-P4AA
BrandZF
HK$22.93
單位
Button PCB 10 A @ 250 V ac SPDT-NO/NC - 2.79 N -40°C +85°C - Silver Alloy - - - -
RS庫存編號 682-0831
製造零件編號SS-10
BrandOmron
HK$18.20
單位
Pin Plunger Solder 10.1 A @ 250 V ac SPDT-NO/NC IP40 1.47 N -25°C +85°C - Silver Alloy - 10000000Operations 0.25N -
RS庫存編號 159-4534
製造零件編號D45U-V3AA
BrandZF
HK$27.15
單位
Button Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -40°C +150°C - Silver Alloy - - - -
RS庫存編號 321-975
製造零件編號BVM3FYR-ULS
HK$51.63
單位
Roller Lever Tab 10 A @ 250 V ac SPST-NC IP40 5 N -40°C +85°C - Silver (Stationary); Silver Nickel (Movable) Glass Fibre Reinforced Nylon 10^6Operations 5.5N -
RS庫存編號 616-0091
製造零件編號D2F
BrandOmron
HK$8.114
/個 (每包:5個)
單位
Pin Plunger PCB 3 A @ 125 V ac SPDT-NO/NC IP40 1.47 N -25°C +65°C - Silver Alloy - 1000000Operations 0.2N -
RS庫存編號 699-4305
製造零件編號AM51640A73N
BrandPanasonic
HK$25.04
單位
Pin Plunger Tab 16 A @ 250 V ac SPDT - 3.92 N -25°C +105°C - Silver Alloy - 10^7Operations 0.98N -
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 804-6221
BrandRS PRO
HK$36.23
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 80gf -
RS庫存編號 103-1645
製造零件編號V-165-1C5(R)
BrandOmron
HK$61.49
單位
Short Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC IP40 1.96 N -25°C +80°C - Silver Alloy - 50000000Operations 0.49N -
RS庫存編號 616-0158
製造零件編號D2F-01L
BrandOmron
HK$10.494
/個 (每包:5個)
單位
Hinge Lever PCB 100 mA @ 30 V dc SPDT-NO/NC IP40 0.78 N -25°C +65°C - Gold Alloy - 1000000Operations 0.05N -
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 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 616-0170
製造零件編號D2MQ-1-TR
BrandOmron
HK$24.31
單位
Plunger Through Hole 500 mA @ 30 V dc SPDT-NO/NC IP40 1.18 N -15°C +70°C - Silver Plated - 30000Operations 0.19N -
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 -