1. By Application (6 Categories)
| Category | Typical Model | Application |
|---|---|---|
| Terminal/Lighting | PZ30/XGM | Residential / office final distribution |
| Power Distribution | XL-21/XL-52 | Workshop Power |
| General Distribution | JP | Rural Distribution Area |
| Low-Voltage Main Cabinet | GGD/GCS/MNS | Distribution Room |
| Metering | PT/PJ | Energy Metering |
| Power Factor Correction | GGJ | Power factor correction |
2. By Current Rating (4 Tiers)
| Current | Model | Cabinet width |
|---|---|---|
| ≤ 63A | PZ30 | 300–500mm |
| 63–250A | XL-21 | 600–800mm |
| 250–630A | XL-52/GGD | 800mm |
| 630–2000A | GGD/MNS | 800–1200mm |
3. By Ingress Protection (Indoor/Outdoor)
Indoor IP30/IP40; outdoor IP54/IP65; rain-exposed environments IP66 + rain hood. Zhejiang Golden Unicorn can build IP65 outdoor stainless steel enclosures.
4. By Mounting Method (Surface/Flush/Floor-Standing)
- Surface mount: wall-mounted, enclosure protrudes from the wall
- Flush mount: flush-mounted, enclosure sits flush with the wall
- Floor-standing: base-mounted, high-capacity main cabinet
5. One-line selection rule (power + circuits + environment)
Power determines the breaker, circuits determine the enclosure, environment determines the ingress protection (IP) rating. If you are not sure, send us your requirements and Zhejiang Golden Unicorn will provide a free solution.
FAQ FAQ
Which distribution box model is best?
There is no single best — only the right fit. PZ30 for residential, XL-21 for workshop floors, GGD for the distribution room. Choose by application.
What is the difference between PZ30 and XGM?
Both are terminal boxes. PZ30 is the national standard designation, XGM is the industry designation. They are largely interchangeable.
Does an outdoor distribution box have to be IP65?
We recommend ≥ IP54. For rain or spray-wash environments, IP65 is required.
Can different models be mixed in one system?
Yes, but the incoming and outgoing specifications must match. Do not pair a large enclosure with undersized circuits.
Related pages:Technical notes · Products · Industries · Resource center · FAQ · Get a quote