The ABB S272-K3 is a 2-pole miniature circuit breaker rated at 3 A with a Trip Curve K characteristic, mounted on a DIN rail. Curve K means the magnetic trip threshold is set to 8–12× In — designed for loads with moderate inrush, like motor circuits or transformer primaries, where a standard B or C curve would nuisance-trip on startup.
ABB S272-K3 Miniature Circuit Breaker, 2 Pole, 3 A, Curve K
MPNS272-K3
ABB S272-K3, miniature circuit breaker, 2-pole, 3 A, Trip Curve K, DIN rail mount.
$48.53Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Amps | 3 |
| Type | Trip Curve K |
| Poles | 2 |
| Mounting | DIN Rail |
Product details
Frequently asked questions
Where can I buy the S272-K3?
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
What is the S272-K3's listed amps and trip curve?
The S272-K3 is rated at 3 A with a Trip Curve K characteristic (magnetic trip at 8–12× In).
Will the S272-K3 drop into a panel specified around the S202M-C10?
Physically yes — both are 2-pole DIN-rail MCBs. Electrically no — the S272-K3 is 3 A Curve K, while the S202M-C10 is 10 A Curve C. Verify the load current and inrush before substituting.
MPN
S272-K3