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ABB XT4NU3050AFJ000XXX — Molded Case Circuit Breakers (MCCB)

ABB XT4NU3050AFJ000XXX XT4N 250 TMF 50-500 3P F F UL/CSA

MPNXT4NU3050AFJ000XXX

ABB XT4N series molded case circuit breaker, order code XT4NU3050AFJ000XXX, 250 A frame, TMF 50-500 A trip, 3-pole, front terminals, UL/CSA certified.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Product details

The XT4NU3050AFJ000XXX: The TMF trip unit covers 50–500 A continuous current range — the fixed thermal element provides overload protection, while the magnetic element handles short-circuit interruption. The 250 A frame size indicates the maximum physical current-carrying capacity of the breaker housing; the trip unit is set within that envelope. UL/CSA listing means the breaker meets North American standards for panelboard and switchboard installation, so it slots into a UL 489 or CSA C22.2 No. 5 compliant distribution assembly without additional agency review.

Lifecycle stage is confirmed as current — no phase-out, no last-time-buy window. No official successor exists because none is needed; the part remains in the ABB active catalog.

Frequently asked questions

Where can I buy XT4NU3050AFJ000XXX and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ to receive current pricing and availability confirmation.

What is XT4NU3050AFJ000XXX's listed description?

The description is XT4N 250 TMF 50-500 3P F F UL/CSA — a 250 A frame molded case circuit breaker with a TMF trip unit adjustable 50–500 A, three-pole, front terminals, UL/CSA certified.

What compliance documentation does this breaker carry?

The breaker is UL and CSA listed per the description. For RoHS/REACH declarations, refer to the manufacturer's compliance documentation available on request.

MPN
XT4NU3050AFJ000XXX