GE E3A250 64110 EntelliGuard Trip Unit

Overview

The GE E3A250 64110 is an EntelliGuard electronic trip unit for GE low voltage air circuit breakers. The GE E3A250 64110 provides adjustable overload, short-circuit and earth fault protection functions for power distribution feeders. It samples three-phase current signals and executes protection logic, local metering and fault recording. The GE E3A250 64110 is widely stocked as spare protection release for industrial and marine switchgear maintenance.

Features

The GE E3A250 64110 supports long time delay, short time delay and instantaneous protection with configurable curves for selective coordination. It measures current, voltage, power and energy values, and stores fault records including trip current and timestamp. The GE E3A250 64110 is equipped with local display and status LED indicators for on-site reading and diagnosis. It supports communication options and configuration software for parameter setup and firmware upgrade. The GE E3A250 64110 adopts plug-in design for direct mounting inside the matched GE circuit breaker frame.

Specs

Device Type: EntelliGuard electronic trip unit Model: GE E3A250 64110 Applicable Breaker: GE low voltage air circuit breaker Protection Functions: L overload, S short time, I instantaneous, earth fault optional Measurement: Current, voltage, power, energy Diagnosis: Fault event log, local display Mounting: Built-in plug-in trip unit inside ACB Protection Grade: IP40 front face Application: Industrial low voltage distribution board, main incoming feeder, bus tie, marine power switchboard

Principle

The GE E3A250 64110 receives current signals from the breaker internal current sensors. The internal microprocessor calculates effective current values and compares them with preset protection thresholds. When overload, short-circuit or earth fault occurs, the GE E3A250 64110 sends trip command to the breaker operating mechanism to isolate the fault circuit and save fault data for analysis.

Applications

The GE E3A250 64110 is used for selective protection of main feeders, bus sections and generator outgoing circuits in factories, power plants and offshore power panels. The GE E3A250 64110 applies to spare stock and emergency replacement of existing GE EntelliGuard protection assemblies. It also supports switchboard renovation and protection setting re-tuning projects.