Handling larger wire sizes from 3/0 AWG to 350 kcmil, the ABB XT4HU3250AY8000XXX offers heavy-duty circuit protection. Operating as a 250-amp, 3-pole molded case circuit breaker, it supports demanding commercial environments. It installs into ReliaGear neXT and SACE Tmax XT panelboards, easily replacing legacy T4H250 models. Equipped with a fixed thermal-magnetic trip unit and rated for 65 kAIC at 480VAC, it ensures reliable, current-limiting performance with reverse feed capabilities.
ReliaGear neXT Panelboards, Switchboards, SACE Tmax XT Panelboards
Trip Technology
Thermal Magnetic
Trip Function Code
LI
Trip Function
Long-Time, Instantaneous
Trip Adjustability
Fixed Thermal, Fixed Magnetic
Wire Gauge
3/0 AWG - 350 kcmil
Max Wire
350 kcmil
Min Wire
3/0 AWG
Available Options
Shunt Trip, Auxiliary Switch, Undervoltage Release, Motor Operator, Rotary Handle
Accessories
Lugs Not Included, Front Terminals Included
Standards
CSA C22.2 No. 5, IEC 60947-2, UL 489
Approval
CCC, CE, CSA, cULus, IEC, KEMA, UL
Temp Rating
-25C to 70C
Construction Features
HACR Rated, Current Limiting, Reverse Feed
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