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. 538-8787
Mfr. Part No.DG13-B1LA
BrandZF
HK$20.098
Each (In a Pack of 5)
units
Hinge Lever PCB 3 A @ 125 V ac SPDT-NO/NC - 0.44 N -25°C +85°C - Silver Alloy - 1000000Operations - -25 → +85°C
RS Stock No. 682-2746
Mfr. Part No.V-152-1C25
BrandOmron
HK$28.93
Each
units
Hinge Lever Tab 15 A @ 250 V ac SPDT-NO/NC IP40 1.23 N -25°C +80°C - Silver Alloy - 50000000Operations 0.14N -25 → +80°C
RS Stock No. 333-300
BrandRS PRO
HK$252.25
Each
units
Leaf Lever Solder 4 A @ 28 V dc SPDT - 1.667 N -54°C +121°C - Silver Plated - 10⁷Operations 0.988N -54 +121°C
RS Stock No. 150-710
Mfr. Part No.DC1C-A1LD
BrandZF
HK$29.97
Each
units
Long Hinge Lever Solder 6 A @ 250 V ac SPDT-NO/NC IP6K7 - -40°C +120°C - Silver Alloy - 1000000Operations - -40 → +120°C
RS Stock No. 682-2421
Mfr. Part No.D3V-16-2C25
BrandOmron
HK$22.892
Each (In a Pack of 5)
units
Pin Plunger Tab 16 A @ 250 V ac SPST-NC IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS Stock No. 807-3879
Mfr. Part No.D3V-16G-1C25-K
BrandOmron
HK$18.91
Each
units
Pin Plunger Quick Connect 16 A @ 250 V ac SPDT IP40 200 gf -25°C +105°C D3V Housing Silver Alloy - 10000000Operations - -25 → +105°C
RS Stock No. 173-9368
Mfr. Part No.4BRSH
HK$466.967
Each (In a Bag of 25)
units
Plunger Pre-wired 15 A @ 250 V ac SPDT IP67 7.2 N -40°C +85°C - Silver Zinc Alloy 1000000Operations 1.7N -40 → +85°C
RS Stock No. 472-8257
Mfr. Part No.XGG2-88-S20Z1
HK$60.45
Each
units
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 -40 → +85°C
RS Stock No. 414-5652
Mfr. Part No.4BRSH
HK$506.56
Each
units
Plunger Pre-wired 15 A @ 250 V ac SPDT IP67 7.2 N -40°C +85°C - Silver Zinc Alloy 1000000Operations 1.7N -40 +85°C
RS Stock No. 807-4226
Mfr. Part No.D2VW-5L2A-1HS
BrandOmron
HK$39.02
Each
units
Short Hinge Lever Tab 5 A @ 250 V ac SPDT IP67 2.25 N -40°C +85°C - Silver Alloy - 10000000Operations 0.2N -40 → +85°C
RS Stock No. 338-298
Mfr. Part No.BZ-2RW80-A2
BrandHoneywell
HK$144.01
Each
units
Lever Screw 15 A @ 125 V ac SPDT-NO/NC - 0.7 N - - - - - - 0.14N -
RS Stock No. 159-4411
Mfr. Part No.D459-V3AA
BrandZF
HK$18.90
Each (In a Pack of 5)
units
Button Tab 16 A @ 250 V ac SPDT-NO/NC - 0.98 N -40°C +85°C - Silver Alloy - - - -40 → +85°C
RS Stock No. 505-9192
Mfr. Part No.KMR231G LFS
BrandC & K
HK$4.635
Each (In a Pack of 10)
units
Tactile Through Hole 50 mA @ 32 V dc SPST-NO - 3 N -40°C +85°C - Silver - 150000Operations - -40 → +85°C
RS Stock No. 682-2499
Mfr. Part No.D3V-16-3C4
BrandOmron
HK$22.892
Each (In a Pack of 5)
units
Pin Plunger Tab 16 A @ 250 V ac SPST-NO IP40 - -25°C +105°C - Silver Alloy - 10000000Operations - -25 → +105°C
RS Stock No. 842-6365
Mfr. Part No.311SM703-T
BrandHoneywell
HK$86.06
Each
units
Straight Lever Solder 4 A SPDT - 0.06 N -54°C +121°C - Gold Plated Silver Phenolic - 0.01N -54 → +121°C
RS Stock No. 338-282
Mfr. Part No.BZ-2RW82-A2
BrandHoneywell
HK$144.84
Each
units
Roller Lever Screw 15 A @ 125 V ac SPDT-NO/NC - 0.97 N - - - - - - 0.21N -
RS Stock No. 616-0215
Mfr. Part No.D3V-16-1C5
BrandOmron
HK$18.31
Each
units
Pin Plunger Tab 16 A @ 250 V ac SPDT-NO/NC IP40 1.96 N -25°C +105°C - Silver Alloy - 10000000Operations 0.49N -25 → +105°C
RS Stock No. 103-1667
Mfr. Part No.V-166-1C5(R)
BrandOmron
HK$43.82
Each
units
Long Roller Lever Tab 16 A @ 250 V ac SPDT IP40 1.96 N -25°C +80°C - Silver Alloy Thermoplastic 50000000Operations 0.14N -25 +80°C
RS Stock No. 682-0879
Mfr. Part No.V-16-3C5(R)
BrandOmron
HK$27.91
Each
units
Pin Plunger Tab 16 A @ 250 V ac SPST-NO IP40 1.96 N -25°C +80°C - Silver Alloy Thermoplastic 50000000Operations 0.49N -25 → +80°C
RS Stock No. 706-4228
Mfr. Part No.D443-P4AA
BrandZF
HK$20.13
Each
units
Button PCB 10 A @ 250 V ac SPDT-NO/NC - 2.79 N -40°C +85°C - Silver Alloy - - - -40 → +85°C
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