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ABB S403M-C10 — 3-Pole MCB (DIN Rail)

ABB S403M-C10 S400 MCB, 10 A, 3-Pole, Curve C, DIN Rail

MPNS403M-C10

ABB S400 SMISSLIN MCB, S403M-C10, 10 A, 3-pole, Trip Curve C, 240 VAC, 10 kA interrupting rating, DIN Rail mount.

$99.06Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

S403M-C10 — Identification
ParameterValue
Number of poles3
S403M-C10 — Electrical
ParameterValue
Voltage (AC)240
Current (A)10
S403M-C10 — Protection
ParameterValue
Interrupting rating (AC)10 kA
S403M-C10 — Mechanical
ParameterValue
Mounting typeDIN Rail
S403M-C10 — Other specifications
ParameterValue
TypeTrip Curve C
Family (Style)S400

Product details

What this 10 A Curve C MCB does in a panel

The ABB S403M-C10 is a 3-pole miniature circuit breaker from the S400 SMISSLIN family, rated 10 A with a Trip Curve C characteristic at 240 VAC.

The closest peer in the S200 family is the S203-D13 — same 3-pole DIN-rail footprint, same 10 kA interrupting rating, but a D curve (10×–20× In) instead of C, and rated 277 VAC instead of 240 VAC. The D curve is for high-inrush loads like large motors or welding equipment. If your panel was specified around an S203-D13, the S403M-C10 will physically drop into the same DIN-rail slot without rewiring — same pole count, same mounting. The functional difference is the trip curve: if your load is moderate inrush (pumps, fans, general distribution), the C curve is a better fit; if it's high inrush, stick with D. The S403M-C10 also carries the SMISSLIN design, which is ABB's tool-free plug-in system for the S400 range — the S203 family uses a different terminal interface.

What compliance documentation is available

ABB provides standard compliance documentation for the S400 series: RoHS and REACH declarations are available on request. The MCB is designed and tested to IEC/EN 60898-1 and IEC/EN 60947-2. For specific UL or CSA listings, check the variant suffix — the standard S403M-C10 is typically CE-marked for European installations. Documentation is supplied with the part or available as a PDF upon request.

Frequently asked questions

Where can I buy S403M-C10 and get a price?

You can source the S403M-C10 through our desk. It is quoted to order against an RFQ — submit a request and we will confirm availability and current pricing at quote time. No stock count or price is listed here; the supply channel is active and we can move quickly on quantity.

What is the closest functional second-source to S403M-C10?

The closest functional second-source is the ABB S203-D13. Both are 3-pole, DIN-rail MCBs with a 10 kA interrupting rating. The key difference: the S403M-C10 uses a C curve (5–10× In) at 240 VAC, while the S203-D13 uses a D curve (10–20× In) at 277 VAC. They share the same physical footprint and pole count, so the S203-D13 can drop into the same panel slot without rewiring — but the trip curve choice depends on your load's inrush profile.

What is the S403M-C10's rated amps?

The S403M-C10 is rated 10 A. That is the continuous current it can carry without tripping under normal conditions.

What is the S403M-C10's trip curve type?

The S403M-C10 has a Trip Curve C characteristic. This means it trips between 5× and 10× the rated current, which is suitable for moderate inrush loads like small motors, transformers, and general distribution circuits.

Will S403M-C10 drop into a panel specified around S203-D13 without rewiring?

Yes, the S403M-C10 will physically fit into the same DIN-rail slot as the S203-D13 — both are 3-pole, DIN-rail mounted MCBs. No rewiring is needed for the mechanical mounting. However, the electrical characteristics differ: the S403M-C10 uses a C curve at 240 VAC, while the S203-D13 uses a D curve at 277 VAC. Verify that your load's inrush and voltage requirements match the C curve before swapping.

What compliance documentation does ABB provide for S403M-C10?

ABB provides RoHS and REACH declarations for the S403M-C10. The MCB is designed and tested to IEC/EN 60898-1 and IEC/EN 60947-2. Standard documentation is supplied with the part or available as a PDF on request. For UL or CSA listings, check the specific variant suffix.

MPN
S403M-C10