CHINT · Automatic changeover switch
Product overview
CHINT NH40SZ provides automatic and manual changeover between normal and backup power sources. It is used in two-source supply systems where the load can accept an interruption during transfer.
Technical selection summary
| Series | CHINT NH40SZ automatic changeover switch |
|---|---|
| Operation | Automatic and manual changeover between normal and backup power sources. |
| Transfer operation | The load supply is interrupted during source changeover. |
| Manufacturer brief range | 16–1600 A family range; select and confirm the complete ordered configuration. |
| Assembly selection | Switch frame, poles, controller type, control supply and required transfer sequence. |
| Voltage and load duty | Specify the operating voltage, load category and upstream protective coordination for the complete assembly. |
| Catalogue standard references | IEC/EN 60947-3 and 60947-6; confirm the applicable documentation for the ordered model. |
Select the complete switch and controller assembly. Ratings outside the linked catalogue range require confirmation. NH40S manual switches are a separate version; choose the wiring and dimensions that match the exact NH40SZ frame and controller.
Typical applications
- Changeover between normal and backup supplies.
- Distribution systems that permit an interruption during source transfer.
Specify your enquiry
For a focused quotation, include:
- Complete NH40SZ model, pole count, rated current and quantity
- Operating voltage, control supply and load duty
- Controller type, transfer sequence and installation requirements
- Required wiring diagram, dimensions and project documents
Product reference images and drawings
The reference pages cover different frames and controller versions. Match the complete model before using any rating, terminal connection or mounting dimension.
