Micro Switches, Lever, Button & Plunger Micro Switches | RS
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    Micro Switches

    Micro switches 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 micro switch work?

    Power is typically attached to the common terminal, this leads into the switch and energizes the spring and because the spring is touching the normally closed 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?

    Micro switches are differentiated by their electrical characteristics. These are small devices and generally only designed to carry low currents 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?

    Micro switches operating life is generally very high, being measured in millions of cycles, in most cases. Consumer products generally have lighter-duty micro switches 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.

    What type of applications need micro switches?

    Micro switches are used in consumer devices and industrial equipment. A common application for these devices is in door interlocks, microwave ovens, or where a door must be shut before the power to the device will turn on. Micro switches 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.

    Micro switches 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.

    1826 Produkter som visas för Micro Switches

    Honeywell
    Plunger
    Screw
    10 A @ 250 V ac
    DPDT
    -
    5.56 N
    -55°C
    +85°C
    -
    Silver
    Phenolic
    3000000Operations
    0.56N
    250V ac
    ZF
    Short Roller Lever
    Solder
    100 mA @ 30 V dc
    SPDT
    IP6K7
    0.88 N
    -40°C
    +120°C
    -
    Gold
    -
    1000000Operations
    -
    -
    ZF
    Button
    PCB
    10.1 A @ 250 V ac
    SPDT
    -
    2.45 N
    -40°C
    +120°C
    -
    Gold; Silver Alloy
    -
    15000000Operations
    -
    -
    Omron
    Roller Lever
    PCB
    3 A @ 125 V ac
    SPDT
    IP40
    0.78 N
    -25°C
    +65°C
    -
    Silver Alloy
    -
    1000000Operations
    0.05N
    -
    Omron
    Short Roller Lever
    Tab
    15 A @ 250 V ac
    SPDT
    IP40
    2.35 N
    -25°C
    +80°C
    -
    Silver Alloy
    -
    50000000Operations
    0.49N
    -
    Omron
    Button
    Surface Mount
    1 mA
    SPST
    IP40
    0.6 N
    -25°C
    +85°C
    D2 Housing
    Silver
    -
    -
    0.15N
    6V dc
    ZF
    Lever
    Solder
    6 A @ 250 V ac
    SPDT
    -
    0.49 N
    -40°C
    +120°C
    -
    Gold, Silver Alloy
    -
    15000000Operations
    -
    -
    Omron
    Roller Lever
    Pre-wired
    100 mA @ 30 V dc
    SPDT
    IP67
    0.59 N
    -40°C
    +85°C
    -
    Gold Alloy
    -
    5000000Operations
    0.06N
    -
    Zippy
    Snap
    Solder
    100 mA
    SP-CO
    IP67
    72 gf
    -40°C
    +125°C
    -
    Ag Alloy, Brass
    Polyamide
    -
    15gf
    125 V ac, 250V ac
    Omron
    Pin Plunger
    Through Hole
    5 A @ 125 V ac
    SPDT
    IP40
    1.47 N
    -25°C
    +85°C
    -
    Silver
    -
    30000000Operations
    0.25N
    -
    Panasonic
    Leaf Lever
    Pre-wired
    100 mA @ 125 V ac
    SP-CO
    IP67
    0.98 N
    -40°C
    +85°C
    -
    Gold Clad Silver Nickel Alloy
    -
    10^6Operations
    0.2N
    -
    ZF
    Lever
    Through Hole
    6 A @ 250 V ac
    SPDT
    IP6K7
    0.69 N
    -40°C
    +105°C
    -
    Silver Alloy
    -
    1000000Operations
    -
    -
    Honeywell
    Straight Lever
    Solder
    15 A
    SP-CO
    -
    2.5 → 3.61 N
    -55°C
    +85°C
    -
    Silver
    Phenolic
    20000000Operations
    1.11N
    -
    Panasonic
    Pin Plunger
    Tab
    5 A @ 250 V ac
    SP-CO
    IP50
    1.96 N
    -40°C
    +85°C
    -
    Silver Nickel Alloy
    PPHS
    5 x 10^6Operations
    0.39N
    -
    Omron
    Hinge Lever
    Through Hole
    3 A
    SPDT
    IP40
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Omron
    Leaf Lever
    PCB Straight
    -
    SPST
    IP67
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Omron
    Lever
    Through Hole
    500 mA @ 30 V dc
    SPDT
    IP40
    0.39 N
    -15°C
    +70°C
    -
    Silver Plated
    -
    30000Operations
    0.04N
    -
    Panasonic
    Hinge Lever
    PCB
    3 A @ 250 V ac
    SP-CO
    -
    0.34 N
    -25°C
    +85°C
    -
    Silver Nickel Alloy
    -
    5 x 10^5Operations
    0.029N
    -
    ZF
    Roller Lever
    Tab
    16 A @ 250 V ac
    SP-CO
    -
    0.49 N
    -40°C
    +85°C
    -
    Silver Alloy
    -
    -
    -
    -
    Saia-Burgess
    Lever
    Pre-wired
    10 A @ 250 V ac
    SPDT
    IP67
    3 N
    -10°C
    +85°C
    -
    Silver
    Zinc
    10^6Operations
    0.6N
    -
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