ABB S202-B63, miniature circuit breaker, 2-pole, 63 A, Trip Curve B, 277 VAC, 6 kA interrupting capacity, DIN rail mount.
| Parameter | Value |
|---|---|
| Amps | 63 |
| Type | Trip Curve B |
| Poles | 2 |
| Mounting | DIN Rail |
| Volts AC | 277 |
| Breaking capacity | 6 kA |
The ABB S202-B63 is a 2-pole miniature circuit breaker rated at 63 A with a Trip Curve B characteristic, meaning it trips at 3 to 5 times rated current — designed for resistive or lightly inductive loads where short inrush is minimal, like heating elements or lighting circuits.
The S202-B63 is rated at 63 A with a Trip Curve B characteristic, meaning it trips at 3 to 5 times rated current — suited for resistive or lightly inductive loads.
The S202-B63 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.
Both use the same 2-pole DIN rail footprint and 277 VAC rating, so the S202-B63 fits the same panel slot. The key difference is the trip curve: Curve B (3-5x In) vs Curve C (5-10x In). If the original design called for Curve C to handle motor or transformer inrush, swapping to Curve B may cause nuisance tripping on startup. Verify the load type before substituting.