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 616-0170
製造零件編號D2MQ-1-TR
BrandOmron
HK$19.73
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 -15 → +70°C
RS庫存編號 804-6221
BrandRS PRO
HK$28.98
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 -55 → +85 (Environmental)°C
RS庫存編號 682-1939
製造零件編號D2HW-C232MR
BrandOmron
HK$52.21
單位
Simulated Roller Lever Pre-wired 2 A @ 12 V dc SPST-NC IP67 0.65 N -40°C +85°C - Gold Alloy - 1000000Operations 0.05N -40 → +85°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 682-0866
製造零件編號SS-5GL
BrandOmron
HK$13.50
/個 (每包:5個)
單位
Hinge Lever Solder 5 A @ 125 V ac SPDT-NO/NC IP40 0.49 N -25°C +85°C - Silver - 30000000Operations 0.06N -25 → +85°C
RS庫存編號 173-9130
製造零件編號AH14809A
BrandPanasonic
HK$10.815
毎管:50 個
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 -25 → +85°C
RS庫存編號 103-1645
製造零件編號V-165-1C5(R)
BrandOmron
HK$58.90
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 -25 → +80°C
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 - -40 → +105°C
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 -25 → +65°C
RS庫存編號 699-5294
製造零件編號AH1562619-A
BrandPanasonic
HK$21.83
單位
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 517-703
製造零件編號DB3C-C1AA
BrandZF
HK$22.57
單位
Plunger PCB 100 mA @ 30 V dc SPDT-NO/NC - 1.47 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS庫存編號 517-915
製造零件編號GPTCRH02
BrandZF
HK$89.84
單位
Roller Screw 15 A @ 250 V ac SPDT-NO/NC - 3.42 N -20°C +85°C - Silver Alloy - 1000000Operations 1.11N -20 → +85°C
RS庫存編號 517-527
製造零件編號GPTCNH01
BrandZF
HK$96.26
單位
Plunger Screw 15 A @ 250 V ac SPDT-NO/NC - 3.42 N -20°C +85°C - Silver Alloy - 1000000Operations 1.11N -20 → +85°C
RS庫存編號 472-8235
製造零件編號XGG2-88-J26Z1
HK$24.21
單位
Lever Tab 16 A @ 250 V ac SPDT-NO/NC IP40 0.91 N -40°C +85°C - Fine Silver; Silver Nickel Melamine Formaldehyd Thermosetting 50000000Operations - -40 → +85°C
RS庫存編號 173-9120
製造零件編號AH1562619-A
BrandPanasonic
HK$13.463
毎管:50 個
單位
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庫存編號 472-8112
製造零件編號XCG5-S1-Z1
HK$33.10
單位
Roller Lever Tab 5 A @ 250 V ac - - 0.69 N - - - Gold; Silver - - 0.09N -
RS庫存編號 321-600
製造零件編號42680
HK$52.93
單位
Plunger Tab 10 A @ 250 V ac SPST-NC IP40 4.5 N -40°C +85°C - Silver (Stationary); Silver Nickel (Movable) Glass Fibre Reinforced Nylon 10^6Operations 4.8N -40 → +85°C
RS庫存編號 794-4011
製造零件編號V1021C4
BrandOmron
HK$28.73
單位
Hinge Lever Quick Connect 10 A @ 250 V ac SPDT IP40 0.59 N -25°C +80°C - Silver - 50000000Operations - -25 → +80°C
RS庫存編號 616-0518
製造零件編號D2SW-3H
BrandOmron
HK$25.06
單位
Pin Plunger Solder 3 A @ 30 V dc SPDT-NO/NC IP67 1.77 N -40°C +85°C - Silver - 5000000Operations 0.29N -40 → +85°C