Assembly families
| Series | Construction | Typical use |
|---|
| GGD | Fixed, single front | Distribution and compensation in plants and buildings |
| GCK / GCS | Withdrawable modules | Motor control centres and distribution with high circuit density |
| MNS | Modular, withdrawable | Projects specified around the MNS platform |
| BlokSeT | Modular, withdrawable | Projects specified around the BlokSeT platform |
| PrismaE | Modular | Compact distribution assemblies |
| GGJ | Capacitor bank | Power factor correction at low voltage |
| GZDW | DC supply panel | Stationary battery and DC distribution for control and protection |
| XL / XM / DPF01 | Boxes and boards | Final distribution in buildings and workshops |
Designed to IEC 61439-2
Assemblies are designed and type verified to IEC 61439-2 and GB 7251, with the rated diversity factor applied to the busbar and the outgoing ways, and with the temperature rise verified for the installed configuration.
Withdrawable modules where maintenance matters
In GCK, GCS, MNS and BlokSeT assemblies a functional unit can be isolated, withdrawn and replaced without shutting down the whole board, with mechanical interlocking between the breaker position and the door.
Components from one factory
ACBs up to 6300 A, MCCBs up to 800 A, MCBs up to 125 A, isolators up to 4000 A, NH fuses and the busbar system are CWNE products, which keeps lead times and spare parts under one supplier.
1. Start from the load schedule
Incoming current, number of outgoing ways, motor ratings and diversity. The incoming device and the busbar are selected from this data, not from the panel type alone.
2. Choose fixed or withdrawable
- Fixed (GGD): lower cost, simplest construction, suitable where circuits are rarely changed.
- Withdrawable (GCK, GCS, MNS, BlokSeT): a functional unit can be replaced without a shutdown — the right choice for continuous processes.
3. Define the short-circuit and protection coordination
State the prospective short-circuit current at the incoming and at each distribution level, and whether discrimination between incoming and outgoing devices must be selective.
4. Agree the form of separation and the IP rating
Form 2, 3 or 4 separation, IP31 to IP54, cable entry from top or bottom, and the installation location all change the structure and must be stated before manufacture.
What to send for a quotation
- Single-line diagram and load schedule
- Incoming current and short-circuit level
- Fixed or withdrawable preference, panel type if specified
- Form of separation, IP rating, cable entry
- Metering, communication and compensation requirements
- Standards and approvals required by the project
