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ABB S201MUC-K10 — 1-Pole MCB (DIN Rail)

ABB S201MUC-K10 MCB, 1P K-Curve 10A, 277VAC/250VDC

MPNS201MUC-K10

ABB S200MUC series, 1-pole miniature circuit breaker, trip curve K, 10 A, 277 VAC / 250 VDC, 6 kA interrupting capacity, DIN-rail mount.

$113.13Ref. price · indicative, final on quote
ABB S201MUC-K10 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S201MUC-K10 — Specifications
ParameterValue
Amps10
TypeTrip Curve K
Poles1
MountingDIN Rail
Volts AC277
Volts DC250
Breaking capacity6 kA
Interrupt rating DC10 kA

Product details

What the K-curve means for your circuit

Curve K is designed for loads with moderate inrush — typically inductive or motor-starting applications where a standard B-curve would nuisance-trip on startup, but the circuit still needs faster response than a D-curve on short-circuit faults. Rated for 277 VAC and 250 VDC, with interrupting capacities of 6 kA at 277 VAC and 10 kA at 250 VDC. The 10 kA DC rating is notably higher than the AC figure — useful in DC distribution panels, battery circuits, or solar combiner boxes where DC fault currents can be severe. The single-pole form factor snaps onto standard DIN rail, occupying one module width in the enclosure.

Frequently asked questions

Where can I buy S201MUC-K10 and get a price?

Sourced to order against an RFQ through independent distribution channels. Submit a quote request for current availability and pricing — no stock count or price figure published here.

What is the difference between S201MUC-K10 and S201M-C3?

The S201M-C3 is a 3 A, curve C breaker with a 60 VDC rating versus the K10's 10 A, curve K, and 250 VDC rating. The C-curve trips magnetically at 5–10× rated current, better for general-purpose resistive or light inductive loads; the K-curve at 8–12× suits higher-inrush circuits. The DC voltage rating difference is significant — the K10 handles 250 VDC, while the C3 is limited to 60 VDC. Both share the same 6 kA AC interrupting capacity and single-pole DIN-rail footprint.

What is S201MUC-K10's listed amps and trip curve?

Rated 10 A with trip curve K characteristic. The K-curve magnetic trip threshold is 8–12× rated current, designed for inductive and motor-starting loads.

Will S201MUC-K10 drop into a panel specified for S201M-C3?

Yes, mechanically and dimensionally identical — both are single-pole DIN-rail breakers from the S200MUC series. The electrical difference is the trip curve and current rating: the K10 is 10 A curve K versus 3 A curve C. If the panel design expects 3 A C-curve protection, swapping to a 10 A K-curve changes the protection coordination. Verify the load current and inrush profile before substituting.

MPN
S201MUC-K10