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 typesThere 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.StandardsWe 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 Stock No. 842-6586
Mfr. Part No.BZ-2RDS-A2-S
BrandHoneywell
SGD51.30
Each
units
Plunger Screw 15 A SPDT - 3.61 → 5.28 N -55°C +85°C - Silver Phenolic 20000000Operations 1.11N -55 → +85°C
RS Stock No. 334-397
Mfr. Part No.DT-2R-A7
BrandHoneywell
SGD144.13
Each
units
Plunger Screw 10 A @ 250 V ac DPDT-NO/NC - 5.56 N - - - - - - 0.56N -
RS Stock No. 820-7432
Mfr. Part No.3MN1
BrandHoneywell
SGD75.62
Each
units
Pin Plunger Screw 15 A @ 480 V ac DPDT - 3.34 → 5.56 N -55°C +85°C - Silver Phenolic 1000000Operations 1.67N -55 → +85°C
RS Stock No. 842-1887
Mfr. Part No.V7-7B17D8-201
BrandHoneywell
SGD4.72
Each
units
Roller Lever Quick Connect 11 A @ 250 V ac SPDT - 2.78 N -40°C +85°C V7 Housing Silver/Gold Plated/Gold Alloy Thermoplastic 10000000Cycles 0.28N -40 → +85°C
RS Stock No. 333-445
Mfr. Part No.BZ-2R-A2
BrandHoneywell
SGD26.42
Each
units
Pin Plunger Screw 15 A @ 125 V ac SPDT-NO/NC - 3.61 N - - - - - - 1.11N -
RS Stock No. 842-1717
Mfr. Part No.V7-1C13D8-201
BrandHoneywell
SGD8.08
Each
units
Roller Lever Quick Connect 15 A SPDT - 1.72 N -40°C +85°C V7 Housing Silver/Gold Plated/Gold Alloy Thermoplastic 10000000Cycles 0.19N -40 → +85°C
RS Stock No. 338-298
Mfr. Part No.BZ-2RW80-A2
BrandHoneywell
SGD25.36
Each
units
Lever Screw 15 A @ 125 V ac SPDT-NO/NC - 0.7 N - - - - - - 0.14N -
RS Stock No. 842-6693
Mfr. Part No.BZ-2RQ77
BrandHoneywell
SGD57.33
Each
units
Plunger Screw 15 A SPDT - 2.5 → 3.61 N -55°C +85°C - Silver Phenolic 20000000Operations 1.11N -55 → +85°C
RS Stock No. 515-666
Mfr. Part No.V15H16-CZ100A06
BrandHoneywell
SGD5.44
Each
units
Roller Lever - 16 A @ 250 V ac SPDT-NO/NC - - - - - - - - - -
RS Stock No. 334-404
Mfr. Part No.BZ-2RW822-A2
BrandHoneywell
SGD18.69
Each
units
Short Roller Lever Screw 15 A @ 125 V ac SPDT-NO/NC - 1.67 N - - - Fine Silver - - 0.42N -
RS Stock No. 842-6384
Mfr. Part No.311SX5-T
BrandHoneywell
SGD32.99
Each
units
Roller Lever Solder 5 A SPDT - 0.31 N -54°C +121°C - Gold Plated Silver Phenolic 10000000Operations 0.05N -54 → +121°C
RS Stock No. 515-739
Mfr. Part No.V15T16-CZ100
BrandHoneywell
SGD4.88
Each
units
Plunger 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 Stock No. 515-745
Mfr. Part No.V15T16-EZ100
BrandHoneywell
SGD4.78
Each
units
Plunger 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 Stock No. 842-1711
Mfr. Part No.V7-1C17D8
BrandHoneywell
SGD3.21
Each
units
Pin Plunger Quick Connect 15 A SPDT - 1.47 N -40°C +85°C V7 Housing Silver/Gold Plated/Gold Alloy Thermoplastic 10000000Cycles 0.24N -40 → +85°C
RS Stock No. 820-7458
Mfr. Part No.BA-2RV-A2
BrandHoneywell
SGD30.64
Each
units
Straight Lever Screw 20 A @ 125 V ac SPDT IP64 0.7 N -55°C +85°C - Silver Phenolic 20000000Operations 0.14N -55 → +85°C
RS Stock No. 319-916
Mfr. Part No.BZ-2RQ1M-A2
BrandHoneywell
SGD53.82
Each
units
Plunger Screw 16 A @ 250 V ac SPDT-NO/NC - 3.63 N - - - - - - 1.08N -
RS Stock No. 515-757
Mfr. Part No.V15T16-CZ100A03
BrandHoneywell
SGD4.96
Each
units
Long Leaf 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 Stock No. 820-7439
Mfr. Part No.311SM6-T
BrandHoneywell
SGD16.83
Each
units
Roller Lever Solder 5 A @ 250 V ac SPDT - 0.39 N -54°C +121°C - Silver Phenolic 1000000Operations 0.07N -54 → +121°C
RS Stock No. 334-381
Mfr. Part No.1SX1-T
BrandHoneywell
SGD21.85
Each
units
Button Solder 7 A @ 250 V ac SPDT-NO/NC - 1.39 N -54°C +121°C - - - 1000000Operations 0.28N -54 → +121°C
RS Stock No. 842-8784
Mfr. Part No.BZ-2RW822-D5
BrandHoneywell
SGD46.08
Each
units
Roller Lever Quick Connect 15 A SPDT - 1.67 N -55°C +85°C - Silver Phenolic 20000000Operations 0.42N -55 → +85°C