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ABB S202-C40 — 2-Pole MCB (DIN Rail)

S202-C40 Miniature Circuit Breaker, 2P, 40A, Curve C

MPNS202-C40

ABB S202-C40 miniature circuit breaker, 2-pole, 40 A, Trip Curve C, 277 VAC, 6 kA interrupting rating, DIN rail mount.

ABB S202-C40 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S202-C40 — Specifications
ParameterValue
Amps40
TypeTrip Curve C
Poles2
MountingDIN Rail
Volts AC277
Breaking capacity6 kA

Product details

The S202-C40 is a 2-pole miniature circuit breaker rated 40 A with a Trip Curve C characteristic, meaning it trips between 5 and 10 times rated current — the standard choice for moderate inrush loads like small motors, transformers, and lighting banks where you need short-circuit protection without nuisance tripping on startup.

How it sits against the S202M-B10

The S202M-B10 is the same 2-pole DIN-rail platform but rated 10 A with a B curve (3–5× In), designed for resistive loads and longer cable runs where you want lower magnetic trip thresholds. It shares the same 6 kA interrupting rating and 277 VAC line-to-neutral voltage, so it physically swaps into the same panel position — but the 40 A C-curve on the S202-C40 handles motor and transformer inrush that would trip a B-curve breaker on startup. If your BOM was specified around the S202M-B10 and you're looking at the S202-C40, check the load's inrush profile; the C curve is more forgiving for inductive starts, but the 40 A rating must match your conductor sizing and load current.

Frequently asked questions

How do I get current pricing and availability for S202-C40?

We source the S202-C40 to order against an RFQ. Send your line item and quantity, and we'll confirm current landed cost and lead time at quote — no automated pricing on this listing.

When sourcing S202-C40, what's the closest functional second-source — S202M-B10?

The S202M-B10 is the closest sibling in the same 2-pole DIN-rail family, but it's a 10 A B-curve breaker. It physically swaps into the same panel position but serves a different load profile — resistive or long cable runs, not motor or transformer inrush. The S202-C40's 40 A C-curve is the correct choice for inductive loads up to that rating.

What is S202-C40's listed amps (40) on this component line?

The S202-C40 is rated 40 A continuous current at 40 °C ambient, per its thermal-magnetic trip characteristic. That's the maximum steady-state load it can carry without tripping on thermal overload.

What is S202-C40's listed type (Trip Curve C) on this component line?

Trip Curve C means the magnetic trip operates between 5 and 10 times rated current (200–400 A for this 40 A breaker). It's the standard choice for moderate inrush loads — small motors, transformers, lighting banks — where you need short-circuit protection without nuisance tripping on startup.

Will S202-C40 drop into a panel that was specified around S202M-B10 without rewiring?

Yes — both breakers share the same 2-pole DIN-rail footprint and 277 VAC rating, so the S202-C40 physically clips into the same rail position and connects to the same bus bars. But the 40 A C-curve is a different protection profile from the 10 A B-curve; verify your load current and conductor sizing before swapping.

MPN
S202-C40