Skip to main content
Log in
ABB S201MUC-K25 — 1-Pole MCB (DIN Rail)

S201MUC-K25 MCB, 1P K 25A, 277VAC/250VDC

MPNS201MUC-K25

ABB S200MUC series, MCB, 1-pole Trip Curve K, 25 A, 277 VAC / 250 VDC, 6 kA interrupting capacity, DIN rail mount.

ABB S201MUC-K25 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S201MUC-K25 — Specifications
ParameterValue
Amps25
TypeTrip Curve K
Poles1
MountingDIN Rail
Volts AC277
Volts DC250
Breaking capacity6 kA
Interrupt rating DC10 kA

Product details

The ABB S201MUC-K25 is a 1-pole miniature circuit breaker with a Trip Curve K characteristic, rated at 25 A continuous on a 277 VAC or 250 VDC line. The K curve means it trips magnetically between 8 and 12 times rated current — designed for inductive loads like motor starters, solenoid valves, and transformers where the inrush is higher than a resistive load but lower than a motor-start.

Sizing note for the maintenance planner

If you are swapping a failed S201MUC-K2 (2 A, same K curve, same 1-pole DIN-rail footprint) for this 25 A unit, the physical fit is identical — same housing, same busbar pitch, same terminal layout. The only change is the overcurrent threshold. No rewiring required; just verify the downstream conductor and load are rated for 25 A.

Frequently asked questions

Will S201MUC-K25 drop into a panel that was specified around S201MUC-K2 without rewiring?

Yes — both are 1-pole DIN-rail breakers with the same Trip Curve K, same 277 VAC / 250 VDC rating, and same interrupting capacity. The only difference is the amp rating (25 A vs 2 A). Physical footprint and terminal layout are identical.

Where can I buy S201MUC-K25 and how is it quoted?

This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock count or price is published here.

MPN
S201MUC-K25