Scope of application
POWGRID-S series low-voltage distribution and control box is a low-voltage complete product newly developed by CHINT Electric for the domestic distribution market. Standardized product design, uniPed brand image and all-round customer experience improvement all originate from the original intention of creating value for customers.
This series of products can be widely used in secondary power distribution places, such as:

Product characteristics
POWGRID-S series low-voltage power distribution and control box comply with GB7251.1-2013 and GB7251.12-2013 standards. It can be applied to power distribution, motor control, lighting control and other scenes. It is applicable to different installation methods such as wall-mounted open installation, wall-mounted concealed installation and floor-mounted installation. At the same time, it can meet the requirements of different installation sites for indoor installation and outdoor installation
POWGRID-S series low-voltage power distribution and control box adopts welded structure. The plates are cold-rolled steel plates or stainless steel plates (according to customer requirements). The humanized design is adopted, the structure layout is reasonable, and the appearance is fashionable and attractive.
Environment condition
● Operating environment: Minimum temperature:-5℃
● Short time maximum temperature:+40℃
● 24h maximum average temperature:+35℃
● Relative humidity: max. 50%(+40℃)
Note: 1. When the temperature is low, it is allowed to have a higher relatively humidity, with the maximum of 90%(+20℃);
2. Derating shall be considered when the equipment is used at ambient temperature higher than the above;
3. If the equipment is installed at an altitude higher than 2000 meters, derating operation shall be considered.
Transportation temperature: Maximum temperature:+55℃; Minimum temperature:-25℃; Short time (no more than 24 hours) +70℃.
Technical parameters
| Compliance with standards | It has passed type test (TTA) | GB 7251.1-2013/GB 7251.4-2017/GB 7251.12-2013 |
|---|---|---|
| Electrical parameters | Rated working voltage (Ue) | 230V/400VAC |
| Rated insulation voltage (Ui) | Up to 1000V (according to components) | |
| Rated impulse withstand voltage (Uimp) | 6/8kV (according to components) | |
| Overvoltage level | III | |
| Rated frequency | 50Hz | |
| Class of pollution | III | |
| Rated current (Ie) | Max630A/Up to 630A | |
| Rated short-time withstand current (Icw) | Max30kA/Up to 30kA | |
| Rated peak withstand current (Ipk) | Max63kA/Up to 63kA | |
| Characteristics of structure | Degree of protection | IP40/54 |
| Surface treatment | Epoxy resin electrostatic powder spraying and matting treatment | |
| Appearance color | RAL7035 or as required by the customer | |
| Box body size | See the table below for details. | |
| Box body structure | Welded type | |
| Installation method | Wall-mounted open installation, wall-mounted concealed installation, floor-mounted installation | |
| Installation site | Indoor, outdoor | |
| Specification of materials | Sealing material | One-time foaming molding of polyurethane |
| Housing | Wall-mounted: 1.2mm cold-rolled steel plate/stainless steel plate | |
| Floor-mounted: 1.5mm cold-rolled steel plate/stainless steel plate | ||
| Door sheet | Wall-mounted: 1.5mm cold-rolled steel plate/stainless steel plate | |
| Floor-mounted: 2mm cold-rolled steel plate/stainless steel plate | ||
| Mounting plate | 1.5mm aluminum coated zinc plate | |
| Insulating parts | Self-extinguishing or flame retardant thermoplastic materials |
Structural characteristics
1.Door position-limit mechanism
When the box door is opened, the door position-limit mechanism can effectively prevent the box door from opening and closing from impacting the operation and maintenance personnel.
2.Folder
A folder is arranged inside the box door to store product drawings, catalogues, technical data and other documents for easy access.
3.Foam seal
The one-step foaming sealing process is adopted. Compared with the traditional sealing strip, it has higher elasticity, no seams and better sealing performance, which can realize the real IP54.
4.Prefabricated installation holes
The mounting bracket and beam of the prefabricated mounting hole can facilitate the installation, positioning and adjustment of components, and Px the cable.

Overall dimensions
Wall-mounted and embedded type
| No | Width (mm) | Height (mm) | Depth(mm) | Remarks |
|---|---|---|---|---|
| 1 | 300 | 400 | 150 | |
| 2 | 300 | 600 | 200 | |
| 3 | 400 | 600 | 150 | |
| 4 | 400 | 600 | 200 | |
| 5 | 400 | 800 | 250 | |
| 6 | 500 | 600 | 200 | |
| 7 | 500 | 600 | 250 | |
| 8 | 500 | 800 | 250 | |
| 9 | 600 | 800 | 250 | |
| 10 | 600 | 1000 | 250 |
Note: Boxes of non-standard sizes can be customized according to customer needs. For details, please consult the manufacturer.








