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Features

  • Mid-trip handle available for visual identification of fault-tripped circuit breakers
  • Optional internal low voltage shunt to meter current (single and multi-pole units are dimensionally equivalent in depth)
  • Terminal options for design flexibility in various applications
  • Multiple trip time delays for application flexibility
  • Electrical and mechanical actuated auxiliary switch options for external monitoring of circuits
  • Reduced voltage drop through the circuit breaker vs. other circuit protective devices

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Specifications

Current Ratings
(Amps)
Resistance (ohms)
DC Delays
51, 52, 53
100 .000375
110 .000375
125 .000340
150 .000325
175 .000315
200 .000225
225 .000225
250 .000225
400 .000125
600 .000083
800 .000063
1,000 .000050
1,200 .000042

Notes:

Resistance is plus or minus 50%.

If a metering shunt option is provided it will add the shunts resistance to these values (i.e. A 400 Amp metering shunt would add (R=V/I). 0000625 Ohms of resistance to the non-metering shunt value of .000125 Ohms or .0001875 Ohms for a 400 Amp unit with a metering shunt).

DC resistance values are based on measurements by the voltmeter ammeter method. Rated current applied for one hour and at a voltage not less than 20 volts.

 

Component Torque (in-lbs)
10-32 Mounting Inserts 10 to 12
M5 Mounting Inserts 8 to 10
3/8-16 and M10 x 1.5 Captive Nuts 220 to 230
3/8-16 and M10 x 1.5 Studs 220 to 230
Solderless Connectors 180

 

Pounds Grams
2.25 1020