SACE Tmax XT Molded Case Circuit Breaker

The ABB XT5NU340ABFN000XXX is a SACE Tmax XT molded case circuit breaker designed for dependable protection in commercial and industrial power distribution systems.

This 3-pole, 400A XT5 frame breaker features thermal-magnetic protection, a 600V rating, and interrupting ratings up to 35kA at 480V.

Key Features

• ABB SACE Tmax XT5 molded case circuit breaker
• 400A amperage rating
• 3-pole configuration for 3-phase systems
• 600V maximum voltage rating
• Thermal-magnetic TMA trip unit
• Adjustable long-time and instantaneous protection
• 35kA interrupt rating at 480V
• 18kA interrupt rating at 600V
• Fixed, unit-mount breaker construction
• Front terminal configuration

Construction Details

The XT5 frame design provides compact molded case construction with reliable overcurrent and short-circuit protection.

Designed for use with copper or aluminum conductors, with wire range compatibility commonly listed from 2/0 AWG to 500 kcmil.

Approximate dimensions are 8.07 in H x 5.51 in W x 4.05 in D.

Important Notes

Confirm compatibility with the specific panelboard, switchboard, enclosure, or equipment before ordering.

Installation should be performed in accordance with applicable electrical codes and manufacturer documentation.