The ABB S203PR-K50 is a 3-pole molded case circuit breaker from the System pro M compact series, using a K-trip curve. It sits in the Circuit Breakers, Fuses & Protection category as a Molded Case Circuit Breaker (MCCB). The K curve provides a higher magnetic trip threshold than B or C curves, making it suited for loads with moderate inrush — think motor circuits, transformers, or industrial lighting where you need to ride through the startup surge without nuisance tripping.
ABB S203PR-K50 Molded Case Circuit Breaker, 3-Pole, K Curve
MPNS203PR-K50
ABB, System pro M compact, Molded Case Circuit Breaker, 3-pole, K characteristic, S203PR-K50.
$167.09Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jul 2026
Specifications
Specifications
| Parameter | Value |
|---|---|
| Weight | 0.34 kgs |
Product details
Frequently asked questions
How do I get pricing and availability for S203PR-K50?
Submit an RFQ for the S203PR-K50. We source through independent distribution and confirm current pricing and availability at quote time.
What is the closest functional second-source to S203PR-K50?
The closest functional peer is the ABB S201PR-K20, a 1-pole version with the same K-curve characteristic. For a 3-pole replacement, the S203PR-K50 is the direct fit; the S201PR-K20 would require rewiring for single-pole applications only.
MPN
S203PR-K50