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 320-528
製造零件編號DC1C-C3RC
BrandZF
HK$59.43
單位
Roller Lever Through Hole 6 A @ 250 V ac SPDT-NO/NC IP6K7 0.78 N -40°C +105°C - Silver Alloy - 1000000Operations - -
RS庫存編號 157-1008
製造零件編號V4NT7
HK$20.48
單位
Plunger Solder - SP-NO/NC IP40 1.4 N -40°C +85°C - Silver Glass Fibre Reinforced Nylon 5 x 10^6Operations 0.28N -
RS庫存編號 333-300
BrandRS PRO
HK$188.52
單位
Leaf Lever Solder 4 A @ 28 V dc SPDT - 1.667 N -54°C +121°C - Silver Plated - 10⁷Operations 0.988N -
RS庫存編號 472-8257
製造零件編號XGG2-88-S20Z1
HK$24.74
單位
Roller Lever 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 0.37N -
RS庫存編號 682-2421
製造零件編號D3V-16-2C25
BrandOmron
HK$16.704
/個 (每包:5個)
單位
Pin Plunger Tab 16 A @ 250 V ac SPST-NC IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -
RS庫存編號 807-3879
製造零件編號D3V-16G-1C25-K
BrandOmron
HK$31.00
單位
Pin Plunger Quick Connect 16 A @ 250 V ac SPDT IP40 200 gf -25°C +105°C D3V Housing Silver Alloy - 10000000Operations - -
RS庫存編號 150-710
製造零件編號DC1C-A1LD
BrandZF
HK$29.68
單位
Long Hinge Lever Solder 6 A @ 250 V ac SPDT-NO/NC IP6K7 - -40°C +120°C - Silver Alloy - 1000000Operations - -
RS庫存編號 414-5652
製造零件編號4BRSH
HK$406.93
單位
Plunger Pre-wired 15 A @ 250 V ac SPDT IP67 7.2 N -40°C +85°C - Silver Zinc Alloy 1000000Operations 1.7N -
RS庫存編號 173-9368
製造零件編號4BRSH
HK$469.224
個 (以毎袋:25)
單位
Plunger Pre-wired 15 A @ 250 V ac SPDT IP67 7.2 N -40°C +85°C - Silver Zinc Alloy 1000000Operations 1.7N -
RS庫存編號 103-1667
製造零件編號V-166-1C5(R)
BrandOmron
HK$35.54
單位
Long Roller Lever Tab 16 A @ 250 V ac SPDT IP40 1.96 N -25°C +80°C - Silver Alloy Thermoplastic 50000000Operations 0.14N -
RS庫存編號 338-298
製造零件編號BZ-2RW80-A2
BrandHoneywell
HK$103.97
單位
Lever Screw 15 A @ 125 V ac SPDT-NO/NC - 0.7 N - - - - - - 0.14N -
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 699-4217
製造零件編號AM51110C43NA
BrandPanasonic
HK$18.58
單位
Pin Plunger Tab 11 A @ 250 V ac SPDT - 0.98 N -25°C +105°C - Silver Alloy - 10^7Operations 0.25N -
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 -
RS庫存編號 616-0215
製造零件編號D3V-16-1C5
BrandOmron
HK$22.64
單位
Pin Plunger Tab 16 A @ 250 V ac SPDT-NO/NC IP40 1.96 N -25°C +105°C - Silver Alloy - 10000000Operations 0.49N -
RS庫存編號 682-2499
製造零件編號D3V-16-3C4
BrandOmron
HK$16.602
/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 159-4411
製造零件編號D459-V3AA
BrandZF
HK$18.524
/個 (每包:5個)
單位
Button Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -40°C +85°C - Silver Alloy - - - -
RS庫存編號 505-9192
製造零件編號KMR231GLFS
BrandC & K
HK$3.008
/個 (每包:10個)
單位
Tactile Through Hole 50 mA @ 32 V dc SPST-NO - 3 N -40°C +85°C - Silver - 150000Operations - -
RS庫存編號 807-4226
製造零件編號D2VW-5L2A-1HS
BrandOmron
HK$56.76
單位
Short Hinge Lever Tab 5 A @ 250 V ac SPDT IP67 2.25 N -40°C +85°C - Silver Alloy - 10000000Operations 0.2N -
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 -