Product Overview
The YCJP series outdoor integrated distribution box is an outdoor integrated distribution device combining metering, outgoing circuits, reactive power compensation and other functions. It provides short-circuit, overload, overvoltage and earth-leakage protection, and features small size, an attractive appearance, economy and practicality. Installed on the pole of an outdoor pole-mounted transformer, it is a new and ideal distribution product for urban and rural network retrofits. The enclosure structure of the YCJP series outdoor integrated distribution box is available in vertical and horizontal types, with a degree of protection of IP54.
Type Designation

Normal service environment
- Ambient temperature: -25 ℃ to +40 ℃;
- Relative humidity: daily average not more than 90%, monthly average not more than 90%;
- Altitude: not more than 2000 m;
- Installed in a place free from violent vibration and shock and free from corrosive gases.
Structural features
The enclosure structure is available in vertical and horizontal types. The housing is bent from 2 mm high-quality stainless-steel plate by a multi-fold process (or from a honeycomb-structure stainless-steel double-sandwich composite panel offering flame retardance, environmental friendliness, heat insulation and anti-condensation performance), using a special stainless-steel welding process; after forming, the enclosure has high overall strength and a mirror-smooth surface with no visible weld marks. The internal mounting beams (plates) are hot-dip galvanised to ensure freedom from corrosion for twenty years. The enclosure has doors at the front and rear for convenient operation and maintenance; the doors are fitted with highly elastic, ageing-resistant sealing strips, and each door is equipped with both a surface lock and a concealed lock, the surface lock being provided with an anti-blocking and rust-proof rain cover. The metering compartment is fully enclosed with a lead-sealing device. A rain-proof and foreign-object-proof incoming cable conduit is fitted on the side of the enclosure; ventilation holes and cable outlet holes are punched in the bottom, and a ventilation duct and wire mesh are provided on the top, giving the functions of water proofing, rust proofing, dust proofing and foreign-object proofing, with a degree of protection of IP54. The internal mounting beams (plates) of the YCJP series outdoor integrated distribution box are hot-dip galvanised to ensure freedom from corrosion for twenty years.
Main technical parameters
| No. | Name | Unit | Value |
|---|---|---|---|
| 1 | Transformer capacity | kVA | 30~400 |
| 2 | Rated operational voltage | V | AC400 |
| 3 | Auxiliary circuit operational voltage | V | AC220,AC380 |
| 4 | Rated frequency | Hz | 50 |
| 5 | Rated current | A | ≤ 630 |
| 6 | Rated residual operating current | mA | 30~300 adjustable |
| 7 | Degree of protection | - | IP54 |

Main Circuit Scheme Diagrams


Layout of internal components (front)
- 1. Incoming cable conduit
- 2. Door lock (surface lock)
- 3. Rain cover for the door lock
- 4. Door lock (concealed lock)
- 5. Current transformer
- 6. Metering meter
- 7. Junction box
- 8. Capacitor
- 9. Capacitor switching contactor
- 10. Miniature circuit breaker
Layout of internal components (rear)
- 11. Zero-sequence current transformer
- 12. Earth-leakage relay
- 13. Outgoing AC contactor
- 14. Outgoing air circuit breaker
Figure 2: structure of the outdoor enclosure (vertical type)

Enclosure Outline Dimensions
Outline dimensions of the horizontal enclosure
| Transformer capacity | Scheme No. | L | W | H |
|---|---|---|---|---|
| 30~100kVA | 01、06 | 800 | 450 | 700 |
| 30~250kVA | 02、04、07、09 | 900 | 500 | 700 |
| 100~400kVA | 03、05、08、10 | 1100 | 600 | 800 |
Outline dimensions of the vertical enclosure
| Transformer capacity | Scheme No. | L | W | H |
|---|---|---|---|---|
| 30~100kVA | 01、06 | 600 | 450 | 1000 |
| 30~250kVA | 02、04、07、09 | 700 | 500 | 1000 |
| 100~400kVA | 03、05、08、10 | 800 | 600 | 1100 |
Enclosure Structure Diagram

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