ABB S400 series, S403M-C63, 3-pole MCB, 63 A, Trip Curve C, 240 VAC, 10 kA interrupting rating, DIN rail mount.
| Parameter | Value |
|---|---|
| Amps | 63 |
| Type | Trip Curve C |
| Poles | 3 |
| Mounting | DIN Rail |
| Volts AC | 240 |
| Family (Style) | S400 |
| Breaking capacity | 10 kA |
The DIN-rail footprint fits standard 35 mm rail in a panel enclosure.
Trip Curve C means the magnetic trip operates at 5 to 10 times rated current (315 A to 630 A for this 63 A unit). That range suits loads with moderate inrush — motor starters, small transformers, lighting banks — where a B curve would nuisance-trip on startup surge but a D curve would delay too long for conductor protection.
The S403M-C63 has a 10 kA interrupting rating at 240 VAC. This is the maximum fault current the breaker can safely interrupt without damage.
The S403M-C63 is available to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time.
Alternative models and sibling configurations in the same ABB series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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