The ABB S203P-Z10 is a 3-pole miniature circuit breaker (MCB) with a Trip Curve Z characteristic, rated at 10 A continuous current and 277 VAC, with a 10 kA interrupting capacity. It snaps onto a DIN rail, so it integrates into any standard enclosure without drilling.
ABB S203P-Z10 MCB, 3-Pole Z-Curve 10A, 277 VAC, 10 kA
MPNS203P-Z10
ABB S203P-Z10, 3-pole miniature circuit breaker, Trip Curve Z, 10 A, 277 VAC, 10 kA interrupting rating, DIN rail mount.
Source DocumentedChannel stated on listing & quote
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Amps | 10 |
| Type | Trip Curve Z |
| Poles | 3 |
| Mounting | DIN Rail |
| Volts AC | 277 |
| Breaking capacity | 10 kA |
Product details
Frequently asked questions
What is S203P-Z10's listed amps (10) on this component line?
The S203P-Z10 is rated at 10 A continuous current.
Will S203P-Z10 drop into a panel that was specified around S204-B32 without rewiring?
No. The S204-B32 is a 4-pole B-curve 32 A breaker; the S203P-Z10 is 3-pole Z-curve 10 A. They share the same DIN-rail footprint but differ in pole count, trip curve, and ampacity — a direct swap would require rewiring and re-evaluating load protection.
MPN
S203P-Z10