CHINT UVT-X1 under voltage release is an accessory designed for CHINT NXB-63 and NXB-40 miniature circuit breakers. It helps protect low-voltage circuits by preventing breaker closing under severe undervoltage and automatically tripping the breaker when the supply voltage falls within the action range.
1. Product overview
The UVT-X1 is assembled with the circuit breaker to provide undervoltage protection in final power distribution systems. It is suitable for AC 240V operation and is commonly used where stable voltage control and safe disconnection are required in switchboards, distribution panels and OEM assemblies.
2. Main features
- Original CHINT UVT-X1 undervoltage release accessory
- Compatible with CHINT NXB-63 and NXB-40 MCB series
- Rated operation voltage Ue: AC 240V
- Rated insulation voltage Ui: 500V
- Prevents circuit breaker closing when applied voltage ≤35% Ue
- Trips the breaker open when applied voltage is between 35% Ue and 70% Ue
- Allows breaker closing when applied voltage is ≥85% Ue
- Designed operating life: ≥4000 cycles
- DIN rail mounting after assembly with breaker
3. Technical specifications
| Item | Specification |
|---|---|
| Model | UVT-X1 |
| Product type | Under Voltage Release / Undervoltage Release |
| Compatible circuit breakers | CHINT NXB-63, NXB-40 |
| Rated operation voltage Ue | AC 240V |
| Rated insulation voltage Ui | 500V |
| Closing prevention threshold | ≤35% Ue |
| Trip action range | 35% Ue to 70% Ue |
| Reclosing condition | ≥85% Ue |
| Maximum applied voltage | Should not exceed 110% Ue |
| Mechanical life | ≥4000 cycles |
| Mounting | TH35-7.5 steel mounting rail after assembly |
4. Typical applications
- Final power distribution panels
- Building electrical switchboards
- Industrial control panels
- OEM low-voltage assemblies
- Projects requiring breaker trip under undervoltage conditions
5. Assembly and installation
Remove the left cover on the compatible circuit breaker, assemble the UVT-X1 module, and then mount the completed assembly on a TH35-7.5 steel DIN rail. This compact design supports fast integration into panel systems.
6. Why choose UVT-X1
The UVT-X1 gives a practical and reliable way to add undervoltage protection to CHINT miniature circuit breakers. It helps avoid unsafe closing and ensures breaker operation when the input voltage drops into the specified action range, making it suitable for distribution projects that require stable protection behavior.
7. Ordering support
If you need help confirming compatibility with NXB-63 or NXB-40 breakers, send us the breaker model, pole configuration and your target market. We can help match the correct CHINT accessory for your project or wholesale order.
8. Product catalog
You can download the original CHINT catalog here: Download UVT-X1 Catalog PDF
