It's built for dual AC/DC operation — 277 VAC and 500 VDC — with a 6 kA interrupting capacity on the AC side and 10 kA on the DC side. Snaps onto standard DIN rail for panel integration. At 4 A it covers control-circuit protection for small contactors, relays, and PLC power supplies.
S202MUC-K4 ABB MCB 2P K Curve 4A AC/DC, DIN Rail
MPNS202MUC-K4
ABB S200MUC series, miniature circuit breaker (MCB), 2-pole, Trip Curve K, 4 A, 277 VAC / 500 VDC, 6 kA interrupting capacity AC, 10 kA DC, DIN rail mount.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Amps | 4 |
| Type | Trip Curve K |
| Poles | 2 |
| Mounting | DIN Rail |
| Volts AC | 277 |
| Volts DC | 500 |
| Breaking capacity | 6 kA |
| Interrupt rating DC | 10 kA |
Product details
Frequently asked questions
What is the interrupting rating of the S202MUC-K4?
The S202MUC-K4 has a 6 kA interrupting capacity on AC circuits and 10 kA on DC circuits.
MPN
S202MUC-K4