Built for demanding industrial environments, the XT4NU3250AFF000XXX provides 250A, 3-pole molded case circuit protection within the ABB SACE Tmax XT4 frame series. It utilizes a fixed thermal and fixed magnetic trip unit to deliver consistent, tamper-proof overcurrent protection. Designed to integrate seamlessly with ABB ReliaGear neXT panelboards and ReliaGear SB switchboards, it offers a 65kAIC interrupt rating at 240VAC. This model replaces the legacy T4N250TW circuit breaker.
ABB ReliaGear neXT Panelboards, ReliaGear SB Switchboards
Trip Technology
Thermal Magnetic
Trip Function Code
LI
Trip Function
Long-Time, Instantaneous
Trip Adjustability
Fixed Thermal, Fixed Magnetic
Available Options
Shunt Trip, Auxiliary Switch, Undervoltage Release, Motor Operator
Accessories
None (Standard)
Standards
CSA C22.2 No. 5, IEC 60947-2, UL 489
Approval
CCC, CSA, cULus, IEC, KEMA, UL
Temp Rating
-25C to 70C
Construction Features
HACR Rated, Reverse Feed, Double Insulation
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