Skip to main content
Log in
ABB S203-C32NA — 4-Pole MCB (DIN Rail)

S203-C32NA 32A 4P MCB, Trip Curve C, DIN Rail

MPNS203-C32NA

ABB S203-C32NA miniature circuit breaker, 4-pole, 32 A, Trip Curve C, 277 VAC, 10 kA interrupting rating, DIN rail mount.

ABB S203-C32NA datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S203-C32NA — Specifications
ParameterValue
Amps32
TypeTrip Curve C
Poles4
MountingDIN Rail
Volts AC277
Breaking capacity10 kA

Product details

The S203-C32NA is a 4-pole miniature circuit breaker from ABB's S200 series, rated 32 A with a Trip Curve C characteristic. It interrupts fault currents up to 10 kA at 277 VAC, sized for general-purpose branch-circuit protection in DIN-rail panels. The C-curve trips between 5 and 10 times rated current, so it handles moderate inrush from motor starters and lighting ballasts without nuisance tripping — a common choice for mixed resistive and inductive loads in commercial and light industrial distribution boards.

Panel fit

Snap-on DIN rail mounting, 4-pole width (72 mm at 18 mm per pole). Occupies the same footprint as any S200-series 4P breaker — no special busbar or adapter needed for standard distribution boards.

Frequently asked questions

Where can I buy S203-C32NA and how do I get a price?

Sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time, not a stock promise here.

When sourcing S203-C32NA, what's the closest functional second-source — S204-B32?

The S204-B32 is the closest functional peer: same 32 A, 4-pole, DIN-rail footprint, and 10 kA interrupting rating, but with a Trip Curve B characteristic (3–5× In) instead of Curve C (5–10× In). It drops into the same panel without rewiring, but the B-curve trips faster on inrush — verify coordination with your load's starting current before substituting.

What is S203-C32NA's listed amps (32) on this component line?

The continuous current rating is 32 A at 277 VAC, per the spec table.

What is S203-C32NA's listed type (Trip Curve C) on this component line?

Trip Curve C means the magnetic trip operates between 5 and 10 times rated current (160–320 A for this 32 A breaker), suited for moderate inrush loads like small motors and lighting.

Will S203-C32NA drop into a panel that was specified around S204-B32 without rewiring?

Yes — same 4-pole DIN-rail footprint, same 32 A rating, same 10 kA interrupting capacity at 277 VAC. The only difference is the trip curve (C vs B), which affects coordination with upstream devices. No rewiring needed.

What compliance documentation does this brand provide for S203-C32NA (RoHS, REACH, UL, IEC)?

As an ABB S200-series MCB, the S203-C32NA is designed to meet IEC 60898-1 and typically carries CE marking. RoHS and REACH declarations are standard for current-production ABB components. Specific UL listing status should be confirmed on the unit's nameplate or via the manufacturer's declaration for the target jurisdiction.

MPN
S203-C32NA