NKK – Dual Seal Waterproof All-in-One M Series Toggle Switch


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When the application requires a highly reliable, double layer, waterproof toggle switch with an IP-rating, engineers now have a new option to choose from with the unveiling of the Dual Seal Waterproof M Series Toggle Switch by NKK Switches.

The new Dual Seal Waterproof M Series toggle switch is the first complete all-in-one waterproof and dustproof toggle from NKK Switches that no longer requires a waterproof boot to be ordered separately.

Coming in both single pole and double pole configurations, the Dual Seal Waterproof M Series switch is suitable for construction machinery, marine applications, transportation equipment, food service and medical applications.

The M Series features a number of characteristics that distinguish it from other options on the market, such as a high torque bushing construction to prevent rotation and separation from the frame during installation, an anti-rotation design on all non-cylindrical levers, an interlocked actuator block to prevent switch failure due to biased lever movement and stainless steel construction to resist corrosion.

The Dual Seal Waterproof M Series Switch consists of silicon rubber on the base of the lever and a sturdy nitrile butadiene O-ring on the inside for increased reliability and dust-tight protection. It is IP67 rated (under IEC 60529) to protect against an immersion of 15cm up to 1m, and is salt spray tested per Mil-STD-810G section 509.5.


  • High torque bushing construction
  • Anti-rotation design on all non-cylindrical levers
  • Interlocked actuator block
  • Stainless steel construction


  • Construction machinery
  • Marine applications
  • Transportation equipment
  • Food service
  • Medical applications