Trip Unit

All the electrical industry buzzwords—system coordination, selectivity, reliability, arc flash protection—are addressed with GE’s trip unit.

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Now offered in GE Spectra SG600 and SK1200 circuit breakers, and backwards compatible with existing Spectra MicroVersa Trip breakers, GE’s microEntelliGuard trip unit delivers: 

• Flexible time-current curve shaping in the industry for system coordination
• Instantaneous ZSI (Zone Selective Interlocking) for selectivity
• Waveform capture and event log for reliability
• Reduced energy let-through (RELT) for arc flash protection.

The trip unit also features:

• An HMI (human machine interface) based on the same platform as the trip units that provides a backlit LCD display with five-button tactile keypad and LED status to show the “health” of trip unit
• Fully adjustable time-current curves with multiple curve shapes, slopes, and delay bands
• Ground Fault Trip or Alarm with multiple slopes for system coordination
• Current metering is a standard feature, with options for power, energy and reactive power metering and waveform capture
• Event Log with date/time stamp to record the last 10 events
• Test set jack for GTUTK20 test kit
• Modbus communications system with user-selectable address assignment for communication directly with building-power management systems.

Specification engineers are available to assist end-users and consulting engineers with system design to fully optimize the capabilities of the microEntelliGuard trip unit.