Scope of Application
QKB1-63 Miniature Circuit Breakers are suitable for lighting distribution systems (Type C) or motor distribution systems (Type D). They are primarily designed for circuits with AC 50Hz/60Hz, single-phase 230V or 400V, a rated insulation voltage of 400V, and currents ranging from 6A to 63A. They provide overload and short-circuit protection, and can also be used for infrequent switching of electrical appliances and lighting circuits under normal conditions.
This product complies with the GB/T 10963.1 standard.
Technical Parameters
Rated service short-circuit breaking capacity (see table): Mechanical and Electrical Endurance: a. Electrical endurance – not less than 20,000 operations; b. Mechanical endurance – not less than 40,000 operations.
| Rated Current (A) | Rated Impulse Withstand Voltage (kV) | Poles | Voltage (V) | Rated Short-Circuit Breaking Capacity Icn = Ics (A) |
|---|---|---|---|---|
| C6–C63 | 4 | 1P | 230/240 | 6000 |
| C6–C63 | 4 | 2,3,4P | 400 | 6000 |
| D6–D63 | 4 | 1P | 230/240 | 6000 |
| D6–D63 | 4 | 2,3,4P | 400 | 6000 |