ABB S200MUC series, S202MUC-K10 miniature circuit breaker, 2-pole, K-curve trip characteristic, 10 A rated, 277 VAC / 500 VDC, DIN-rail mount.
| Parameter | Value |
|---|---|
| Amps | 10 |
| Type | Trip Curve K |
| Poles | 2 |
| Mounting | DIN Rail |
| Volts AC | 277 |
| Volts DC | 500 |
| Breaking capacity | 6 kA |
| Interrupt rating DC | 10 kA |
The K-curve means magnetic trip occurs at 10–14× rated current (100–140 A for this 10 A unit), designed to ride through the high inrush of transformer, solenoid, or DC/DC converter loads without nuisance trips — a tighter window than the Z-curve but wider than the D-curve. AC interrupting capacity is 6 kA at 277 V; DC interrupting is 10 kA at 500 V, which covers most residential/commercial solar string fault currents.
6 kA at 277 VAC and 10 kA at 500 VDC.
The S202MUC-K10 is available to order through independent distribution; submit an RFQ for current pricing and availability.
The S202M-C63 is a 63 A C-curve 2-pole breaker; the S202MUC-K10 is a 10 A K-curve unit. The K-curve's 10–14× magnetic trip suits inductive/DC loads, while the C-curve's 5–10× trip is for general-purpose AC branch circuits. The S202M-C63 also has a 125 VDC rating versus the S202MUC-K10's 500 VDC, so the K10 handles higher DC bus voltages.
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