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ABB S201MUC-K20 — 1-Pole MCB (DIN Rail)

ABB S201MUC-K20 MCB 1P K 20A, 6 kA AC / 10 kA DC

MPNS201MUC-K20

ABB S200MUC series, MCB, 1-pole, 20 A, Trip Curve K, 277 VAC / 250 VDC, 6 kA AC / 10 kA DC interrupting rating, DIN rail mount.

ABB S201MUC-K20 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S201MUC-K20 — Specifications
ParameterValue
Amps20
TypeTrip Curve K
Poles1
MountingDIN Rail
Volts AC277
Volts DC250
Breaking capacity6 kA
Interrupt rating DC10 kA

Product details

20 A, Curve K — what it means for your panel

Rated 277 VAC and 250 VDC, with a 6 kA interrupting capacity on AC and 10 kA on DC. Snaps onto DIN rail in the panel; no special adapter needed.

Current production.

Panel fit and coordination

Single-pole footprint, DIN-rail mount. For DC circuits, the 10 kA interrupting rating at 250 VDC covers battery-backed control power and solar combiner boxes. Curve K's 8–12x magnetic pickup means it coordinates downstream of a slower upstream device (e.g., a C-curve MCCB) without nuisance trip on load start.

Frequently asked questions

Will S201MUC-K20 drop into a panel specified for S201MUC-K25?

Yes — same DIN-rail footprint, same pole count, same voltage and interrupting ratings. The only difference is the current rating: 20 A vs 25 A. If the panel load is ≤20 A, it's a direct swap.

MPN
S201MUC-K20