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 842-6346
製造零件編號311SM4-T
BrandHoneywell
TWD303.00
單位
Roller Lever Solder 5 A SP-CO - 0.39 N -54°C +121°C - Gold Plated Silver Phenolic - 0.07N -54 → +121°C
RS庫存編號 842-8709
製造零件編號BZ-2RQ784
BrandHoneywell
TWD1,751.00
單位
Plunger Screw 15 A SP-CO - 2.5 → 3.61 N -55°C +85°C - Silver Phenolic 20000000Operations 1.11N -55 → +85°C
RS庫存編號 842-8790
製造零件編號BZ-2RW8244-A2
BrandHoneywell
TWD628.00
單位
Straight Lever Screw 5 A SP-CO - 0.7 N -53°C +204°C - Silver Phenolic 20000000Operations 0.14N -53 → +204°C
RS庫存編號 515-751
製造零件編號V15T16-CZ100A05
BrandHoneywell
TWD136.00
單位
Short Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -25°C +125°C - Silver Cadmium Oxide Polybutylene Terephthalate PET Thermoplastic 5000000Operations 0.25N -25 → +125°C
RS庫存編號 515-741
製造零件編號V15T16-CZ100A06
BrandHoneywell
TWD124.00
單位
Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -25°C +125°C - Silver Cadmium Oxide Polybutylene Terephthalate PET Thermoplastic 5000000Operations 0.25N -25 → +125°C
RS庫存編號 842-6249
製造零件編號111SM2-T
BrandHoneywell
TWD567.00
單位
Roller Lever Solder 5 A SP-CO - 1.95 N -54°C +121°C - Gold Plated Silver Phenolic 10000000Operations 0.56N -54 → +121°C
RS庫存編號 515-690
製造零件編號V15T16-EZ100A06
BrandHoneywell
TWD147.00
單位
Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -25°C +125°C - Silver Cadmium Oxide Polybutylene Terephthalate PET Thermoplastic 5000000Operations 0.25N -25 → +125°C
RS庫存編號 842-6374
製造零件編號311SX1-T
BrandHoneywell
TWD834.00
單位
Straight Lever Solder 5 A SP-CO - 0.49 N -54°C +121°C - Gold Plated Silver Phenolic 10000000Operations 0.09N -54 → +121°C
RS庫存編號 515-666
製造零件編號V15H16-CZ100A06
BrandHoneywell
TWD164.00
單位
Roller Lever - 16 A @ 250 V ac SPDT-NO/NC - - - - - - - - - -
RS庫存編號 842-6560
製造零件編號BZ-2RD
BrandHoneywell
TWD919.40
/個 (每包:5個)
單位
Plunger Screw 15 A SP-CO - 2.5 → 3.61 N -55°C +85°C - Silver Phenolic 20000000Operations 1.11N -55 → +85°C
RS庫存編號 820-7401
製造零件編號13AC1
BrandHoneywell
TWD1,631.00
單位
Rod Screw 15 A @ 250 V ac SP-CO - - -18°C +149°C - Silver Stainless Steel - - -18 → +149°C
RS庫存編號 820-7439
製造零件編號311SM6-T
BrandHoneywell
TWD399.00
單位
Roller Lever Solder 5 A @ 250 V ac SP-CO - 0.39 N -54°C +121°C - Silver Phenolic 1000000Operations 0.07N -54 → +121°C
RS庫存編號 820-7473
製造零件編號BZ-2RQ1-A2
BrandHoneywell
TWD391.00
單位
Plunger Screw - SP-CO IP65 - - - - - - - - -
RS庫存編號 842-6378
製造零件編號311SX2-T
BrandHoneywell
TWD494.00
單位
Straight Lever Solder 5 A SP-CO - 0.31 N -54°C +121°C - Gold Plated Silver Phenolic 10000000Operations 0.05N -54 → +121°C
RS庫存編號 334-381
製造零件編號1SX1-T
BrandHoneywell
TWD585.00
單位
Button Solder 7 A @ 250 V ac SPDT-NO/NC - 1.39 N -54°C +121°C - - - 1000000Operations 0.28N -54 → +121°C
RS庫存編號 334-404
製造零件編號BZ-2RW822-A2
BrandHoneywell
TWD518.00
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 337-829
製造零件編號11SM3-T2
BrandHoneywell
TWD244.00
單位
Plunger Solder 5 A @ 250 V ac SPDT-NO/NC - 1.39 N - - - - - - 0.28N -
RS庫存編號 842-6359
製造零件編號311SM68-T
BrandHoneywell
TWD656.00
單位
Roller Lever Solder 1 A SP-CO - 0.39 N -54°C +121°C - Gold Plated Silver Phenolic - 0.07N -54 → +121°C
RS庫存編號 820-7379
製造零件編號11SM1-T
BrandHoneywell
TWD419.00
單位
Pin Plunger Solder 5 A V dc @ 30 SP-CO - 0.83 → 1.39 N -54°C +121°C - Silver Phenolic 10000000Operations 0.28N -54 → +121°C
RS庫存編號 515-785
製造零件編號V15H22-CZ100A03
BrandHoneywell
TWD203.00
單位
Long Leaf Lever - 22 A @ 250 V ac SPDT-NO/NC - - - - - - - - - -