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 682-2590
製造零件編號D3V-16G-1C25
BrandOmron
HK$11.172
/個 (每包:5個)
單位
Pin Plunger Tab 16 A @ 250 V ac SPDT-NO/NC IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS庫存編號 699-0227
製造零件編號ABV1212503
BrandPanasonic
HK$56.54
單位
Hinge Lever Tab 5 A @ 250 V ac SPDT IP50 1.18 N -40°C +85°C - Silver Nickel Alloy PPHS 5 x 10^6Operations 0.13N -40 → +85°C
RS庫存編號 682-1550
製造零件編號D2F-L-T
BrandOmron
HK$11.352
/個 (每包:5個)
單位
Hinge Lever PCB 3 A @ 125 V ac SPDT-NO/NC IP40 0.78 N -25°C +65°C - Silver Alloy - 1000000Operations 0.05N -25 → +65°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 150-675
製造零件編號DC1B-A1AA
BrandZF
HK$27.77
單位
Button Solder 6 A @ 250 V ac SPST-NC IP6K7 1.96 N -40°C +120°C - Silver Alloy - 1000000Operations - -40 → +120°C
RS庫存編號 616-0029
製造零件編號SSG-5H
BrandOmron
HK$13.75
單位
Pin Plunger Solder 5 A @ 125 V ac SPDT-NO/NC IP40 1.5 N -25°C +125°C - Silver - 10000000Operations 0.25N -25 → +125°C
RS庫存編號 699-0237
製造零件編號ABV1214513
BrandPanasonic
HK$70.99
單位
Simulated Roller Lever Tab 3 A @ 250 V ac SPDT IP50 1.18 N -40°C +85°C - Gold Clad Silver Nickel Alloy PPHS 5 x 10^6Operations 0.13N -40 → +85°C
RS庫存編號 517-551
製造零件編號DC1C-H1AA
BrandZF
HK$36.21
單位
Button PCB 6 A @ 250 V ac SPDT-NO/NC IP6K7 1.96 N -40°C +120°C - Silver Alloy - 1000000Operations - -40 → +120°C
RS庫存編號 517-911
製造零件編號GPTCRH01
BrandZF
HK$121.76
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 907-0168
製造零件編號1085.0342
BrandMarquardt
HK$24.631
/個 (每包:10個)
單位
Standard PCB 10 A SPNO IP40 14.4 ± 0.5 N -40°C +125°C - Silver PA Glass Fiber-Reinforced, PETP Glass Fiber-Reinforced 200000Operations - -40 → +125°C
RS庫存編號 456-4637
製造零件編號V4LS
HK$76.04
單位
Plunger Pre-wired 5 A @ 250 V ac SP-NO/NC IP6K7 2.5 N -40°C +85°C - Fine Silver Glass Fibre Reinforced PA 10^5Operations 0.5N -40 → +85°C
RS庫存編號 820-7417
製造零件編號1TB1-2
BrandHoneywell
HK$437.66
單位
Pin Plunger Solder 10 A @ 250 V ac DPDT - 1.95 → 3.61 N -55°C +125°C - Silver Phenolic 7000000Operations 1.11N -55 → +125°C
RS庫存編號 301-2214
製造零件編號V3F
HK$226.09
單位
Plunger Screw 1 A @ 250 V ac SPDT IP40 3.3 N -40°C +240°C - Silver Polyphenylene Sulphide 10^7Operations 1.1N -40 → +240°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 317-998
製造零件編號V3S-UL
HK$159.02
單位
Plunger Pre-wired 5 A @ 250 V ac SP-NO/NC IP67 3.9 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 10^6Operations 1.1N -40 → +85°C
RS庫存編號 699-5308
製造零件編號AH15809-A
BrandPanasonic
HK$18.02
單位
Pin Plunger PCB 1 A @ 30 V dc SPDT-NO/NC - 0.74 N -25°C +85°C - Silver Nickel Alloy - 1000000Operations 0.098N -25 → +85°C
RS庫存編號 682-0869
製造零件編號SS-5GL13-F
BrandOmron
HK$12.366
/個 (每包:5個)
單位
Simulated Roller Lever Solder 5 A @ 125 V ac SPDT-NO/NC IP40 0.16 N -25°C +85°C - Silver - 30000000Operations 0.02N -25 → +85°C
RS庫存編號 863-7089
製造零件編號ZMA03A150L04PC
BrandC & K
HK$7.884
個 (以毎袋:5)
單位
Lever - 3 A SPDT - - -40°C +85°C - Silver - - - -
RS庫存編號 842-1783
製造零件編號V7-1Z29E9
BrandHoneywell
HK$30.19
單位
Pin Plunger Quick Connect 25 A SPNO - 1.23 → 2.21 N -40°C +85°C V7 Housing Silver/Gold Plated/Gold Alloy Thermoplastic 10000000Cycles 0.54N -40 → +85°C
RS庫存編號 706-4307
製造零件編號DC1C-C3LB
BrandZF
HK$66.29
單位
Short Lever Pre-wired 6 A @ 250 V ac SPDT-NO/NC IP6K7 0.78 N -40°C +105°C - Silver Alloy - 1000000Operations - -40 → +105°C