Part identity and production status
The ABB S203M-B10 is a 3-pole miniature circuit breaker (MCB) with a B-curve trip characteristic rated at 10 A, part of the S203M series for DIN rail mount applications.
ABB S203M-B10 Miniature Circuit Breaker, 10A B-Curve
MPNS203M-B10
ABB, S203M series, miniature circuit breaker (MCB), 3-pole, B-curve, 10 A, DIN rail mount, part S203M-B10.
$25.34Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Weight | 0.17 kgs |
Product details
Frequently asked questions
Where can I buy the S203M-B10?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time figure is carried on this listing.
What is the S203M-B10's part number and weight?
The part number is S203M-B10 and the listed weight is 0.17 kg.
Will the S203M-B10 drop into a panel specified around the S273-K6A?
Both are 3-pole DIN rail mount MCBs from ABB, but the S273-K6A is a K-curve 6 A unit versus the B-curve 10 A S203M-B10. The physical footprint is the same 3-pole width, so it will mechanically fit the same rail position, but the trip curve and current rating differ — verify coordination with the existing panel design before substitution.
MPN
S203M-B10