The S203-C2 is a 3-pole miniature circuit breaker rated at 2 A with Trip Curve C, meaning it trips between 5× and 10× rated current — designed for moderate inrush loads like small transformers, contactor coils, or control-circuit supplies where a brief startup surge won't nuisance-trip a B-curve device. DIN rail mounting means it snaps into a standard 35 mm rail inside a panelboard or sub-distribution enclosure. The 3-pole format occupies three module widths (about 54 mm) on the rail — plan your fill factor accordingly if you're populating a multi-way distribution board alongside other single- or multi-pole MCBs.
S203-C2 Miniature Circuit Breaker, 3P, 2A, Curve C, 10 kA
MPNS203-C2
ABB S203-C2, miniature circuit breaker, 3-pole, 2 A, Trip Curve C, 277 VAC, 10 kA interrupting capacity, DIN rail mount.
$20.32Ref. 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) | 2 |
| 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-C2's listed amps and type?
The S203-C2 is rated at 2 A with Trip Curve C, meaning it trips between 5× and 10× rated current for moderate inrush loads.
Will S203-C2 drop into a panel specified around S203-C10 without rewiring?
Yes — both share the same 3-pole DIN rail footprint, 277 VAC rating, and 10 kA interrupting capacity. The only difference is the current rating (2 A vs 10 A), so the S203-C2 fits the same bus and wiring if the load current is within its 2 A rating.
Where can I buy S203-C2 and how is it quoted?
The S203-C2 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
MPN
S203-C2