ABB S203-D6 miniature circuit breaker, 3-pole, 6 A, Trip Curve D, 277 VAC, 10 kA interrupting rating, DIN rail mount.
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Parameter | Value |
|---|---|
| Voltage (AC) | 277 |
| Current (A) | 6 |
| Parameter | Value |
|---|---|
| Interrupting rating (AC) | 10 kA |
| Parameter | Value |
|---|---|
| Mounting type | DIN Rail |
| Parameter | Value |
|---|---|
| Type | Trip Curve D |
Curve D trips magnetically at 10–20× rated current (60–120 A instantaneous), so it tolerates the high inrush of motor loads, transformers, and welding equipment without nuisance tripping on start-up. The 6 A continuous rating handles smaller branch circuits — think control transformers, solenoid banks, or lighting contactor coils — where the load is steady but the start surge is sharp.
The S203-C10 shares the same 3-pole DIN-rail footprint and 277 VAC / 10 kA rating, but at 10 A with a Curve C characteristic — so it drops into the same panel without rewiring, but the trip curve and ampacity differ. For a 6 A Curve D requirement, the S203-D6 is the direct fit.
6 A continuous rating.
Yes — both are 3-pole DIN-rail mount breakers with the same 277 VAC / 10 kA rating, so the S203-D6 fits the same panel footprint and bus connection. The difference is ampacity (6 A vs 10 A) and trip curve (D vs C).