The ABB XT4HU31001YJ000XXX is a 3 Pole molded case circuit breaker with a current rating of 100 Amps. It has an interrupting rating of 65kAIC. The XT4HU31001YJ000XXX includes long time, short time and instantaneous trip functions.
What type of trip unit is installed in the XT4HU31001YJ000XXX?
This specific catalog number includes an electronic Ekip DIP LSI trip unit. Unlike basic thermal-magnetic breakers, the Ekip DIP allows electricians to adjust long time, short time, and instantaneous protection settings via dip switches on the front face.
What wire sizes are accepted by the standard lugs on this breaker?
The factory-installed lugs accept a single conductor ranging from 4 AWG to 300 kcmil. Ensure you torque the terminal screws to the manufacturer specifications during installation to maintain a secure and compliant connection.
Is the XT4HU31001YJ000XXX compatible with standard Tmax XT4 accessories?
Yes, because it utilizes the standard XT4 frame, it accepts the full range of ABB Tmax XT4 internal accessories. This includes field-installable auxiliary contacts, bell alarms, and shunt trips.
What does the H in the XT4HU31001YJ000XXX part number signify?
The H designates a high interrupting capacity version of the XT4 frame. While standard versions offer lower fault protection, this model provides up to 65kAIC, making it suitable for commercial and industrial panels with higher available fault currents.
How does the LSI trip function improve system coordination?
The Long time, Short time, and Instantaneous (LSI) settings allow panel builders to shape the trip curve to match specific load characteristics. This selective coordination ensures that only the breaker closest to a fault trips, keeping the rest of the facility online.
Can this breaker be used in ABB ReliaGear panelboards?
Yes, XT4 breakers with Ekip DIP LSI trip units are fully compatible with ABB ReliaGear merchandised lighting panelboards and neXT SuperBox power panelboards when paired with the correct mounting hardware.
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