ABB S203-K15 miniature circuit breaker, 3-pole, 15 A, Trip Curve K, 277 VAC, 10 kA interrupting rating, DIN rail mount.
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Parameter | Value |
|---|---|
| Voltage (AC) | 277 |
| Current (A) | 15 |
| Parameter | Value |
|---|---|
| Interrupting rating (AC) | 10 kA |
| Parameter | Value |
|---|---|
| Mounting type | DIN Rail |
| Parameter | Value |
|---|---|
| Type | Trip Curve K |
Trip Curve K is a magnetic-only characteristic that trips between 8 and 12 times the rated current. That puts it between Curve C (5–10×) and Curve D (10–20×). It's the right choice for motor circuits, transformers, and other inductive loads that draw a high inrush — the breaker holds through the start surge but still clears a hard short fast. For a 15 A rating, that means the magnetic trip kicks in somewhere above 120 A.
The S203-K15 has a 10 kA interrupting rating at 277 VAC, meaning it can safely clear a fault up to 10,000 amps without cascading upstream.
The S203-K15 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.