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Nuclear Qualified | Namco Controls

Nuclear Qualified

EA170 Series Nuclear Qualified Mechanical Limit Switch
EA170 Series
Limit Switch

The EA170 Series is a double pole, double break, double throw, nuclear qualified limit switch having mechanical travel of 10° to trip and  two normally open and two normally closed circuits. The EA170 Series is qualified for harsh environment without accident conditions. This series has is capable of standard, wide or long mounting.

Qualifications

IEEE 323-1974, 1983 & 2003; IEEE 344-1975, 1987 & 2004; IEEE 382-1972, 1980, 1996 & 2006; IEEE 383-1972, 1974 & 2003; IEEE 572-1985, 2004 & 2006; Special qualifications for Westinghouse, GE, AECL, B & W, KOPEC and RCC-E design specifications; IEC 60780 (1998), 60980 (1989), & 60068 (2007)

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Technical Data

  • Double Pole Double Throw (DPDT)
  • Rocker Type SNAP-LOCK Technology
  • Two normally open and two normally closed, NEMA for “Z” contact arrangement
  • Enclosure meets NEMA 1, 4, and 13 requirements for dust-tight, water-tight and oil-tight applications
  • Operating lever is adjustable in 7°30’ increments through 360°
  • Adequate wiring space for nine conductors
  • High temperature components and lubricants
  • Die-cast zinc housing for corrosion resistance
  • Stainless steel top cover and fasteners
  • Gold-plated contacts minimize resistance and ensure years of reliable service
  • Seismic and vibration resistant
  • Configured for clockwise, counterclockwise or maintained operation
  • EA170 has a positive lever latching mechanism
  • Three mounting styles (Standard, Long, Wide) available

Operating Temperature:

0° to 90°

Pre-Travel:

10°or 6 1/2°

Maximum Travel:

37°


Ordering Information

EA170 Ordering Information

ex. EA170-14302
(Standard Mount & Front Shaft, Clockwise & Short Travel, Open Conduit Entrance)

A: Mounting/Shaft Position
1xxxx - Standard Mount & Front Shaft
2xxxx - Wide Mount & Front Shaft
3xxxx - Long Mount & Front Shaft
4xxxx - Standard Mount & Reverse Shaft
5xxxx - Wide Mount & Reverse Shaft
6xxxx - Long Mount & Reverse Shaft

BC: Rotation Direction/Trip Travel
x1xxx - Clockwise & Standard Travel
x2xxx - Counterclockwise & Standard Travel
x3xxx - Maintained & Standard Travel
x4xxx - Clockwise & Short Travel
x5xxx - Counterclockwise & Short Travel
x6xxx - Maintained & Short Travel

DE: Nuclear Qualified Connection Option
xx302 - Open Conduit Entrance
xx402 - 9-Pin Connector