ABB S801U-K50, S800 series, 1-pole miniature circuit breaker, Trip Curve K, 50 A, 240 VAC, 25 kA interrupting rating, DIN rail mount.
| Parameter | Value |
|---|---|
| Amps | 50 |
| Type | Trip Curve K |
| Poles | 1 |
| Mounting | DIN Rail |
| Volts AC | 240 |
| Breaking capacity | 25 kA |
At 50 A and 240 VAC, this breaker handles motor and transformer loads where the inrush current is higher than a resistive load — the K curve trips between 8 and 12 times the rated current, so it won't nuisance-trip on a motor start but still clears a hard fault.
Single-pole width leaves room for adjacent breakers or accessories in the same row. No special tooling needed for the swap.
Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock or price figures are published here.
The ABB S201MUC-K2 is a 1-pole K-curve MCB but rated at only 2 A with a 6 kA interrupting rating at 277 VAC. It will not replace the 50 A, 25 kA S801U-K50 without a complete redesign of the branch circuit.
50 A, Trip Curve K, 1-pole, 240 VAC, 25 kA interrupting rating.
No. The S201MUC-K2 is a 2 A, 6 kA breaker; the S801U-K50 is 50 A, 25 kA. The physical footprint is similar (1-pole DIN rail), but the ampacity and fault rating differences mean the panel's bus bars, wire sizing, and upstream protection would need re-evaluation.