Skip to main content
Log in
ABB S203-K13 — Miniature Circuit Breakers (MCB)

ABB S203-K13 Miniature Circuit Breaker, K-Curve 3-Pole, Curr

MPNS203-K13

ABB S203-K13 miniature circuit breaker, K-curve, 3-pole, 0.17 kg, current production.

$27.43Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

S203-K13 — Specifications
ParameterValue
Weight0.17 kgs

Product details

What the K-curve means for the panel

The S203-K13: The K-curve trips magnetically between 8 and 12 times rated current, making it the right choice for inductive loads like motors, transformers, and solenoid valves where inrush is higher than a B-curve would tolerate but the application doesn't need the D-curve's 10–20× range. On a 3-pole breaker, that K-characteristic applies across all poles simultaneously — important when you're coordinating downstream contactors or soft-starts that share a common fault path.

Lifecycle status is current — no PCN or LTB on this code. No official ABB successor exists because none is needed; this is the active catalog part.

Frequently asked questions

Where can I buy S203-K13 and how do I get a price?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is the K-curve on the S203-K13?

The K-curve trips magnetically between 8 and 12 times rated current, suited for inductive loads like motors and transformers that draw higher inrush than resistive loads.

Will S203-K13 drop into a panel specified around SH203T-C32?

Both are 3-pole DIN-rail miniature circuit breakers from ABB's System pro M compact family with identical 0.17 kg weight and same physical footprint. The difference is the trip curve — S203-K13 uses K-curve (8–12× In) while SH203T-C32 uses C-curve (5–10× In). If the panel was coordinated for C-curve selectivity, swapping to K-curve may shift the coordination study. Check the upstream breaker's let-through and the downstream load's inrush before swapping.

MPN
S203-K13