Scanning for ideas: Switches Sealed for Outdoor Use

May 22, 2008
The WT Series of sealed toggle switches from NKK Switches, Scottsdale, Ariz.(nkkswitches.com), have front panels with an IP67 rating and sealed back panels with an IP60 rating.

The actuator and bases are also sealed with epoxy, making the devices well suited for use in harsh and outdoor environments. The switch housings are constructed of a heat-resistant resin, letting them meet UL94V-0 flammability ratings. A switching mechanism that can break light welds lets the switches meet IEC 61058. And bushings feature an antijamming feature, protecting contacts from damage caused by too much downward force.

The switches are rated at 10A at 125 Vac and 6A at 250 Vac, or 10A at 30 Vdc. They can be ordered in single or doublepole configurations. Mechanical life for maintained circuits is estimated to be 50,000 operations; for momentary circuits that figure falls to 30,000. Electrical life is 15,000 operations for all configurations.

Sponsored Recommendations

Pumps Push the Boundaries of Low Temperature Technology

June 14, 2024
As an integral part of cryotechnology, KNF pumps facilitate scientific advances in cryostats, allowing them to push temperature boundaries and approach absolute zero.

The entire spectrum of drive technology

June 5, 2024
Read exciting stories about all aspects of maxon drive technology in our magazine.

MONITORING RELAYS — TYPES AND APPLICATIONS

May 15, 2024
Production equipment is expensive and needs to be protected against input abnormalities such as voltage, current, frequency, and phase to stay online and in operation for the ...

Solenoid Valve Mechanics: Understanding Force Balance Equations

May 13, 2024
When evaluating a solenoid valve for a particular application, it is important to ensure that the valve can both remain in state and transition between its de-energized and fully...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!