That K curve means it's built for inductive loads — motors, transformers, solenoids — where the inrush current runs higher than a resistive load but still needs fast magnetic trip on a hard short. Snaps onto standard DIN rail; panel builders will appreciate the consistent S800 footprint.
ABB S801U-K100 MCB, 1P, K Curve, 100 A, 25 kA
MPNS801U-K100
ABB S800 series MCB, S801U-K100, 1 pole, Trip Curve K, 100 A, 240 VAC, 25 kA interrupting capacity, DIN rail mount.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Amps | 100 |
| Type | Trip Curve K |
| Poles | 1 |
| Mounting | DIN Rail |
| Volts AC | 240 |
| Breaking capacity | 25 kA |
Product details
Frequently asked questions
What is S801U-K100's listed amps and type?
It is rated 100 A with a Trip Curve K characteristic, single-pole, 240 VAC, and a 25 kA interrupting capacity.
Will S801U-K100 drop into a panel specified around S201MUC-K2 without rewiring?
Not directly — the S201MUC-K2 is a 2 A K-curve MCB rated to 277 VAC with a 6 kA interrupting capacity. The S801U-K100 is a 100 A device with a different footprint and higher interrupting rating, so you'd need to verify panel cutout dimensions and bus bar spacing.
Where can I buy S801U-K100?
Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.
MPN
S801U-K100