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| AMPERE | 16A, 20A, 32A, 63A |
|---|
Description
CNC YCB7-63N 3 Pole MCB — 16A to 63A
A three-pole miniature circuit breaker for three-phase circuits without neutral. The YCB7-63N 3P protects three-phase motors, compressors, and distribution feeders against overload and short circuit — standard equipment in Pakistani industrial and commercial panels.
Unlike the 4-pole version, this 3P MCB does not include a neutral pole. Use it where neutral is handled separately (busbar) or where the load does not need a switched neutral, such as 3-phase motor circuits.
Specifications
| Model | YCB7-63N (3P) |
|---|---|
| Poles | 3 Pole |
| Rated Current | 16A, 20A, 32A, 40A, 63A |
| Rated Voltage | AC 400V / 50Hz |
| Breaking Capacity | 6kA |
| Trip Curve | C Curve |
| Mounting | 35mm DIN Rail |
| Standard | IEC 60898 |
Typical Uses
- Three-phase motor protection (up to roughly 15 HP at 63A)
- Sub-main breaker in 3-phase distribution boards
- 3-phase air conditioning compressor feeder
- Three-phase water pump starter panel
- Small workshop machinery protection
Sizing Tip
For motor protection, pick a C-curve MCB rated at 1.25x the motor full-load current. A 10 HP motor drawing about 19A on 3-phase 400V should use the 32A variant. For lighting or resistive loads, the 20A or 32A covers most commercial panels.

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