The ABB S801S-K40 is a 1-pole miniature circuit breaker from the S800S series, rated 40 A with a Trip Curve K characteristic on 230 V AC. The 50 kA interrupting capacity at 230 V AC handles high-fault panels. DIN rail mount, single module width. Snaps into any standard 35 mm DIN rail enclosure. The 1-pole form factor means it protects one phase — use three for three-phase motor circuits or combine with a 3-pole base for grouped protection.
ABB S801S-K40 MCB 1P K 40A, 50 kA Interrupt Rating
MPNS801S-K40
ABB S800S series, S801S-K40, 1-pole Miniature Circuit Breaker, Trip Curve K, 40 A, 230 V AC, 50 kA interrupting capacity, DIN rail mount.
Source DocumentedChannel stated on listing & quote
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Amps | 40 |
| Type | Trip Curve K |
| Poles | 1 |
| Mounting | DIN Rail |
| Volts AC | 230 |
| Breaking capacity | 50 kA |
Product details
Frequently asked questions
What is S801S-K40's listed amps and trip curve?
Rated 40 A, Trip Curve K, 1 pole, 230 V AC, with a 50 kA interrupting capacity.
MPN
S801S-K40