310+ Electronic Trip Units

Eaton’s Electronic Trip Units are designed to meet a broad range of monitoring and protection requirements. Curve shaping, zone selective interlocking, arc flash reduction, diagnostics, and system monitoring and communications are all features available by selecting the appropriate trip unit for the specific requirement. True RMS sensing offers increased accuracy and reliability.

310+: An electronic trip unit family solution from 15A through 2500A to serve the demands of multiple applications:

  • Adjustable Ir switch allows for continuous current settings and eliminates the need for rating plugs
  • Long Delay I2t Setting w/ variable trip times
  • Long, Short, Instantaneous, and Ground Fault protection
  • Zone Selective Interlock optional from 15A through 2500A and communicates with Eaton’s upstream Air Circuit Breakers
  • Arc Flash Reduction Maintenance System optional to provide the highest level of safety protection for service personnel
  • Cause of Trip indication available
  • Ground Fault Alarm & High Load Alarm optional
  • Ground Fault Alarm, no trip optional
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  • Various electronic trip unit protection offerings to meet various application needs (trip unit suffix):
    • LS (33)
    • LSI (32)
    • LSG (35)
    • LSIG (36)
    • ALSI (38)
    • ALSIG (39)
  • Zone Selective Interlocking (ZG)
  • High Load Alarm (B20)
  • Ground Fault Alarm, trip (B21)
  • Ground Fault Alarm, no trip:
    • LS(A) (35B22)
    • LSI(A) (36B22)
    • ALSI(A) (39B22)
  • Cause of Trip Indication:
    • Digiview / Ammeter (DIGIVIEW)
    • Panelmount Digiview / Ammeter (DIGIVIEWR06)
    • Cause of Trip LED Indicator (TRIP-LED)
  • Arc-Flash Reduction Maintenance System on L-, N-, and R-frames:
    • ALSI (38)
    • ALSIG (39)
    • ALSI(A) (39B22)
  • PM3 Connectivity – INCOM Communications:
    • ANSI C12.1 revenue grade accurate
    • measure current & voltage to 0.5% of reading accuracy
    • monitor power and energy to 1.0% of reading accuracy
    • monitor breaker status (open, closed, tripped)
  • Portable Test Kit

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Questions on a product you own?
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Replacement parts are available for this product:
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Questions about your order through VOTW, EDI, FAX Orders?
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Questions about your order through Bid Manager or Large Project Orders?
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