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ABB S201MUC-B6 — 1-Pole MCB (DIN Rail)

ABB S201MUC-B6 MCB 1P B 6A, DIN Rail, 277 VAC

MPNS201MUC-B6

ABB S200MUC series, S201MUC-B6, 1-pole miniature circuit breaker, Trip Curve B, 6 A, 277 VAC / 250 VDC, 6 kA interrupting capacity, DIN rail mount.

ABB S201MUC-B6 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S201MUC-B6 — Specifications
ParameterValue
Amps6
TypeTrip Curve B
Poles1
MountingDIN Rail
Volts AC277
Volts DC250
Breaking capacity6 kA
Interrupt rating DC10 kA

Product details

What this breaker does on the rail

Interrupting capacity and voltage reach

Rated interrupting capacity is 6 kA at 277 VAC and 10 kA at 250 VDC. On the DC side, the 10 kA rating at 250 VDC covers string-level solar combiner boxes or DC bus protection in control cabinets — not every 1-pole MCB carries a DC rating that high, so this one earns its place on mixed AC/DC panels.

Single-pole width (roughly 18 mm) leaves room for adjacent breakers or accessories like shunt trips or auxiliary contacts from the S200 range. Rated 277 VAC line-to-neutral or 250 VDC — verify the supply voltage matches before clipping it on.

Frequently asked questions

Where can I buy S201MUC-B6 and how do I get a price?

This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time.

What is S201MUC-B6's listed amps and trip curve?

Rated 6 A with a Trip Curve B characteristic, meaning the magnetic trip threshold is 3 to 5 times rated current (18–30 A).

Will S201MUC-B6 drop into a panel that was specified around S201MUC-K2 without rewiring?

Yes, both are 1-pole DIN-rail breakers in the same S200MUC family with identical voltage ratings and interrupting capacities. The difference is the trip curve: B for resistive/light inductive loads, K for motor or transformer circuits. No rewiring needed — just verify the curve matches your load.

MPN
S201MUC-B6