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ABB S203P-B6 — 3-Pole MCB (DIN Rail)

ABB S203P-B6 MCB, 6 A, Trip Curve B, 3-Pole, 10 kA

MPNS203P-B6

ABB S200P series, miniature circuit breaker, S203P-B6, 6 A, Trip Curve B, 3-pole, 277 V AC, 10 kA interrupting rating, DIN rail mount.

ABB S203P-B6 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S203P-B6 — Identification
ParameterValue
Number of poles3
S203P-B6 — Electrical
ParameterValue
Voltage (AC)277
Current (A)6
S203P-B6 — Protection
ParameterValue
Interrupting rating (AC)10 kA
S203P-B6 — Mechanical
ParameterValue
Mounting typeDIN Rail
S203P-B6 — Other specifications
ParameterValue
TypeTrip Curve B

Product details

Trip Curve B — what it means for the load

Trip Curve B means the magnetic trip fires at 3 to 5 times rated current (18–30 A for this 6 A unit). That makes it the right choice for resistive loads and general-purpose lighting circuits where inrush stays low. It is not intended for motor or transformer starting — those need Curve C or D to ride through the magnetizing inrush without nuisance tripping.

Panel integration — DIN rail fit

The 3-pole footprint occupies three modular units (17.5 mm per pole) on the rail. Terminal design accepts copper conductors up to 25 mm² — sized for the 6 A branch circuit it protects.

Frequently asked questions

Where can I buy the S203P-B6?

The S203P-B6 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What are the key ratings of the S203P-B6?

Rated 6 A, Trip Curve B, 3-pole, 277 V AC, with a 10 kA interrupting rating. Mounts on DIN rail.

Will the S203P-B6 drop into a panel specified for the S201PR-K5?

No — the S201PR-K5 is a single-pole, 5 A, Curve K MCB. The S203P-B6 is a 3-pole, 6 A, Curve B device. They share the same DIN-rail footprint but differ in pole count, rating, and trip characteristic, so direct substitution without rewiring is not possible.

MPN
S203P-B6