Category Archives: Limit Switches

Industrial mechanical limit switches and actuators.

NAMCO Snap-Lock®

Snap-Lock® Technology Is What You Need

The SNAP-LOCK® Technology is what makes our remote indication devices so unique. Utilizing this technology in our design enables us to produce a robust, highly reliable and trusted product for the nuclear & power generation industry.

SNAP:
Our solutions have a “snap” action which enables a quick action from one position to another, effectively elimi­nating deadband. The contacts are forced to be in one position or the other and cannot dwell in between open or closed.

LOCK:
Instead of relying on spring or magnetic force, each switch has a locking mechanism that mechanically forces the contacts to stay closed until released by the trip lever. This eliminates any possible contact chatter due to vibration or seismic events.

NAMCO utilizes three different SNAP-LOCK® mechanisms (Cam Type, Rocker Type and Magnetic Prox Type) detailed in the drawings below. The type of mechanism selected is based on your application.

cam-drawing1-2       rocker-drawing      mag_prox_type

NAMCO Position Indication Switches with SNAP-LOCK® technology are used throughout the power generation industry for a variety of critical applications.

  • Valve Position Indication: From the MSIV to Balance of Plant
  • Actuator Position
  • Conveying
  • Over Travel Protection
  • Overhead Cranes
  • Mobile Equipment
  • HVAC Dampers
  • Presence Detection
  • Door Closure
  • Level Detection

 

Extra Heavy Duty Magnet Switches – Tiefenbach

tiefenbach_logo1“Tiefenbach – Extra Heavy Duty Magnet Switches, for Industrial, Mining & Off-shore industries, available in Weatherproof or Intrinsic Safe applications, in Monostable or Bistable.”

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Namco Limit Switches

Namco Controls has been in the heavy industrial control sensor business since 1937 with our first Snap-Lock® limit switch, a name synonymous with rugged reliability under brutal conditions. Today, we are the only source for limit switches for use in Nuclear Power Plants qualified to NRC requirements, with installations around the world.

When non-contact electronic sensing was required, first in automotive assembly lines, Namco was the first U.S. company to respond. We patented internal short circuit protection for 2-wire sensors and developed the first weld field immune (WFI) sensors to survive resistance welder applications, positioning Namco as a recognized leader in high reliability electronic sensing. In fact, reliability is so important to our customers that we introduced the industry’s first Lifetime Replacement Program for electronic sensors in 1987.

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