Eaton Logo

Magnum Digitrip 520/520M/520MC

The Magnum Digitrip line of trip units consists of the 520, 520M, and 520MC for UL standards and models 520i, 520Mi, and 520MCi for IEC standards. Only models 520MC and 520MCi provide communications. Appendix B in the 520 series trip unit IL (page 36) includes a troubleshooting guide.

Protection settings options:

  • 520:
    • LI - Long delay, Instantaneous
    • LSI - Long delay, Short delay, Instantaneous
    • LSIG - Long delay, Short delay, Instantaneous, Ground Fault Trip
    • Instantaneous can be disabled for LSI and LSIG
  • 520M/520MC
    • LSI - Long delay, Short delay, Instantaneous
    • LSIG - Long delay, Short delay, Instantaneous, Ground Fault Trip
    • LSIA - Long delay, Short delay, Instantaneous, Ground Fault Alarm
    • Instantaneous can be disabled

External control power is not required to operate the basic overcurrent protection functions; the trip unit operates through current sensors mounted in the breaker. When the breaker trips, an LED on the trip unit will indicate the cause of trip.

Features:

The power module (DPS):

  • Four voltage ratings: 120 Vac, 230 Vac, 24–48 Vdc, and 125 Vdc
  • 10VA
  • Required on 520MC
  • Optional on 520M (required for LSIA)
  • Display will be functional even when the breaker has no load
    • Without DPS, display will activate once the load current reaches approximately 30% single-phase or 10% three-phase of the (In) rating
  • Without auxiliary power, no communications or ground alarm signal

The green status LED blinks approximately once per second to indicate normal operations. 

Magnum Digitrip 520/520M/520MC Time Current Curve.

Additional Time/Current Curves are sorted by product.

Factory default settings

Test kits