The ABB S203M-C25 is a 3-pole miniature circuit breaker from the S200M series, rated 25 A with a C-curve trip characteristic. It mounts on DIN rail and is rated for 277 VAC and 125 VDC circuits. The C-curve means it trips between 5 and 10 times rated current — that's 125 to 250 A instantaneous — so it's sized for inductive loads like motor starters, contactor coils, and smaller transformers where inrush won't nuisance-trip a B-curve but you don't need the D-curve's wider window. Interrupting rating is 6 kA at 277 VAC and 10 kA at 125 VDC, which covers standard panel fault levels in commercial and light industrial distribution.
ABB S203M-C25 MCB 3-Pole 25A C-Curve DIN Rail
MPNS203M-C25
ABB S200M series, S203M-C25 miniature circuit breaker, 3-pole, 25 A, C-curve trip characteristic, DIN-rail mount, rated 277 VAC / 125 VDC, 6 kA interrupting rating AC.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Parameter | Value |
|---|---|
| Voltage (AC) | 277 |
| Current (A) | 25 |
| Parameter | Value |
|---|---|
| Interrupting rating (AC) | 6 kA |
| Parameter | Value |
|---|---|
| Mounting type | DIN Rail |
| Parameter | Value |
|---|---|
| Type | Trip Curve C |
| Volts DC | 125 |
| Interrupt rating DC | 10 kA |
Product details
Frequently asked questions
Where can I buy the S203M-C25 and get a price?
The S203M-C25 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quote.
What is the interrupting rating of the S203M-C25?
The S203M-C25 has a 6 kA interrupting rating at 277 VAC and 10 kA at 125 VDC.
What does the C-curve mean on this breaker?
The C-curve trips between 5 and 10 times rated current (125 to 250 A instantaneous), making it suitable for inductive loads like motor starters and contactor coils where moderate inrush is expected.
MPN
S203M-C25