ZMA Series
Subminiature Snap-acting Switch

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Image shown represents the product series and may not indicate the actual part number

For communication devices, testing equipment and alarm systems – where space is limited – C&K’s ZMA series subminiature snap-acting switches are compact, yet manufactured to have a long electrical and mechanical life. Available with various PCB terminals and actuators, the ZMA series have a reliable snap-acting mechanism and can also act as a PCB detection switch.

Features and Benefits

  • Reliable snap-acting mechanism
  • Long electrical and mechanical life
  • Compact size—Ideal when space is limited

Typical Applications

  • PCB detection switch
  • Communication devices
  • Testing equipment


  • Contact Rating:

    3A @ 125 V AC 24 V DC; 1 A @125 / 250 V AC 24 V DC; 0.1A @ 125 V AC 60 V DC

  • Electrical Life:

    300,000 cycles @ 0.1A / 10,000 cycles @ 3A

  • Insulation Resistance:

    100 megohms min.

  • Dielectric Strength:

    500 Vrms

  • Operating Temperature:

    –40ºC to 85ºC

  • Certifications:

    UL61058-1, , (Canada and US)

= Most Common

Current Rating Circuit Mounting Type Sealing Illumination Switch Function Electrical Life Cycles Voltage Rating - AC Voltage Rating - DC Actuator Type Termination Style Operating Force, Torque Release Force Pretravel Overtravel Packaging
3A (AC/DC) SPDT Thru-hole Unsealed None On-Mom On 10,000 125V 24V Lever, Simulated Roller Thru-hole 49gf 11gf 0.055" (1.4mm) 0.049" (1.25mm) Bulk