The S203-C40 is a 3-pole miniature circuit breaker rated 40 A with a Trip Curve C characteristic, meaning it trips between 5× and 10× rated current — the standard choice for protecting general-purpose loads like lighting, small motor circuits, and distribution subfeeds where moderate inrush is expected without nuisance tripping. 10 kA interrupting rating at 277 VAC. DIN rail mount.
S203-C40 Miniature Circuit Breaker, 3P, 40A, Curve C, 10 kA
MPNS203-C40
ABB S203-C40 miniature circuit breaker, 3-pole, 40 A, Trip Curve C, 277 VAC, 10 kA interrupting rating, DIN rail mount.
$19.05Ref. price · indicative, final on quote
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) | 40 |
| Parameter | Value |
|---|---|
| Interrupting rating (AC) | 10 kA |
| Parameter | Value |
|---|---|
| Mounting type | DIN Rail |
| Parameter | Value |
|---|---|
| Type | Trip Curve C |
Product details
Frequently asked questions
What is S203-C40's listed amps and type?
The S203-C40 is rated 40 A with a Trip Curve C characteristic, 3-pole, 277 VAC, and a 10 kA interrupting rating.
MPN
S203-C40