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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Beskrivning Pris 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-artikelnummer 301-2236
Tillv. art.nrF1NST8A1
VarumärkeSaia-Burgess
75,61 kr
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Lever Through Hole 1 A @ 250 V ac SP-NO/NC IP54 0.6 N -40°C +85°C - Fine Silver Polyamide 10^7Operations 0.09N -40 → +85°C
RS-artikelnummer 173-9356
Tillv. art.nrF1NST8A1
VarumärkeSaia-Burgess
32,614 kr
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Lever Through Hole 1 A @ 250 V ac SP-NO/NC IP54 0.6 N -40°C +85°C - Fine Silver Polyamide 10^7Operations 0.09N -40 → +85°C
RS-artikelnummer 807-4002
Tillv. art.nrD2VW-5L2-1HS
VarumärkeOmron
71,41 kr
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RS-artikelnummer 159-4562
Tillv. art.nrD45U-V3RD
VarumärkeZF
56,39 kr
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Roller Lever Tab 16 A @ 250 V ac SPDT-NO/NC - 0.49 N -40°C +150°C - Silver Alloy - - - -40 → +150°C
RS-artikelnummer 682-1519
Tillv. art.nrD2F-F
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16,338 kr
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Pin Plunger PCB 1 A @ 125 V ac SPDT-NO/NC IP40 0.74 N -25°C +65°C - Silver Alloy - 1000000Operations 0.05N -25 → +65°C
RS-artikelnummer 706-4193
Tillv. art.nrDG23-B3RA
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48,30 kr
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Roller Lever Left Angle PCB 50 mA @ 30 V dc SPDT-NO/NC - 0.59 N -25°C +85°C - Gold Plated - 1000000Operations - -25 → +85°C
RS-artikelnummer 616-0300
Tillv. art.nrD2VW-5L2A-1
VarumärkeOmron
68,47 kr
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Roller Lever Solder 5 A @ 250 V ac SPDT-NO/NC IP67 2.25 N -40°C +85°C - Silver Alloy - 10000000Operations 0.2N -40 → +85°C
RS-artikelnummer 173-9391
Tillv. art.nrV4NSY1UL
VarumärkeSaia-Burgess
59,772 kr
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Short Lever Pre-wired 3 A @ 250 V ac SPDT-NO/NC IP67 0.9 N -40°C +85°C - Fine Silver Glass Fibre Reinforced Nylon 5000000Operations 0.07N -40 → +85°C
RS-artikelnummer 173-8293
Tillv. art.nrASQ10230
VarumärkePanasonic
83,431 kr
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Pin Plunger Pre-wired 100 mA @ 30 V dc SPST-NO IP67 1.5 N -40°C +85°C - Gold Plated - - - -40 → +85°C
RS-artikelnummer 699-0088
Tillv. art.nrASQ10230
VarumärkePanasonic
111,99 kr
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Pin Plunger Pre-wired 100 mA @ 30 V dc SPST-NO IP67 1.5 N -40°C +85°C - Gold Plated - - - -40 → +85°C
RS-artikelnummer 472-8285
Tillv. art.nrV4NSY1UL
VarumärkeSaia-Burgess
80,48 kr
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Short Lever Pre-wired 3 A @ 250 V ac SPDT-NO/NC IP67 0.9 N -40°C +85°C - Fine Silver Glass Fibre Reinforced Nylon 5000000Operations 0.07N -40 → +85°C
RS-artikelnummer 159-4590A
Tillv. art.nrDB1C-A1LB
VarumärkeZF
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Short Lever Solder 6 A @ 250 V ac SPDT-NO/NC - 0.59 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS-artikelnummer 159-4590
Tillv. art.nrDB1C-A1LB
VarumärkeZF
36,67 kr
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Short Lever Solder 6 A @ 250 V ac SPDT-NO/NC IP50 0.59 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
RS-artikelnummer 161-7306
Tillv. art.nr83 123 0-2,2M
VarumärkeCrouzet
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Standard - 5 A @ 250 V ac Single Pole Double Throw (SPDT) IP66 7.5 N 0°C +85°C - Silver Nitrile 2 x 10^6Operations 1.5N 0 → +85°C
RS-artikelnummer 682-2499
Tillv. art.nrD3V-16-3C4
VarumärkeOmron
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Pin Plunger Tab 16 A @ 250 V ac SPST-NO IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS-artikelnummer 173-8249
Tillv. art.nrABS111650
VarumärkePanasonic
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Roller Lever Tab 2 A @ 30 V dc SPDT IP50 0.59 N -40°C +85°C - Silver Nickel Alloy - 5 x 10^6Operations 0.039N -40 → +85°C
RS-artikelnummer 698-9678
Tillv. art.nrABS111650
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Roller Lever Tab 2 A @ 30 V dc SPDT IP50 0.59 N -40°C +85°C - Silver Nickel Alloy - 5 x 10^6Operations 0.039N -40 → +85°C
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Tillv. art.nrE72-40HT
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Lever Wire Lead 10.1 A NC, NO - 67 g -40°C 85°C - Silver Alloy Thermoplastic Nylon - - -40 → +85°C
RS-artikelnummer 159-4657
Tillv. art.nrDB1C-C1LD
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Long Hinge Lever Through Hole 6 A @ 250 V ac SPDT-NO/NC - 0.18 N -40°C +120°C - Gold; Silver Alloy - 15000000Operations - -40 → +120°C
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Tillv. art.nrGPTCRS01
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Long Roller Lever Screw 15 A @ 250 V ac SPDT-NO/NC - 0.97 N -20°C +85°C - Silver Alloy - 1000000Operations 0.22N -20 → +85°C