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Nuclear Qualified | Namco Controls

Nuclear Qualified

EA180 Series Nuclear Qualified Mechanical Limit Switch
EA180 Series
Limit Switch

The EA180 Series nuclear qualified limit switch is suitable for harsh environments with accident conditions (LOCA, HELB, Radiation and Seismic reistant). This switch is Double Pole Double Throw (DPDT) and features positive lever latching mechanism. The EA180 switch comes standard in a die-cast housing with a stainless steel top cover and fasteners, along with gold- plated contacts.

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
  • EA180 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°

Maximum Temperature:

340° F

Pressure:

70 PSIG

Radiation:

204 MRad gamma


Ordering Information

EA180 Series Ordering Information

ex. EA180-14302
(Standard Mount, Clockwise & Short Travel, Open Conduit Entrance w/ Generic Gen-2 Nuclear Qualifications)

A: Mounting
1xxxx - Standard Mount
2xxxx - Wide Mount
3xxxx - Long Mount

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/Qualification
xx302 - Open Conduit Entrance with Generic Gen-2 Nuclear Qualifications
xx307 - Open Conduit Entrance (Wolsong 2, 3 & 4)
xx309 - Open Conduit Entrance (ULCHIN 1, 2, 3, 4, 5 & 6; YONGGWANG 5 & 6;
Shin-Kori 1 & 2; Shin-Wolsong 1 & 2; BNPP 1, 2, 3, & 4; Shin-Hanul 1 & 2)
xx402 - 9-Pin QDC with Generic Gen-2 Nuclear Qualifications
xx501 - 4-Pin QDC with Generic Gen-2 Nuclear Qualifications
xx502 - 4-Pin QDC with Generic Gen-2 Nuclear Qualifications