Skip to main content
ABB S203M-B20 — Miniature Circuit Breakers (MCB)

ABB S203M-B20 Miniature Circuit Breaker, DIN Rail

MPNS203M-B20

ABB, S203M series, miniature circuit breaker, S203M-B20, DIN rail mount, current lifecycle stage.

$22.86Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

S203M-B20 — Specifications
ParameterValue
Weight0.17 kgs

Product details

What it is and where it fits

The ABB S203M-B20 is a miniature circuit breaker (MCB) from the S203M series, designed for DIN-rail mounting in distribution boards and control panels.

Lifecycle and sourcing posture

For volume or scheduled BOM requirements, this part is quoted to order against an RFQ; availability and current pricing are confirmed at quote time.

Frequently asked questions

Where can I buy the S203M-B20?

The S203M-B20 is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.

What is the closest second-source for the S203M-B20?

The S273-K6A is a functional peer in the same DIN-rail MCB family, but it uses a K-characteristic trip curve versus the B-curve of the S203M-B20, so verify the trip characteristic and pole count before substituting.

MPN
S203M-B20