CHINT · OUVT-1 Over/Under Voltage Release for NB1-63 / NBH8-40
Product overview
CHINT OUVT-1 is a over/under-voltage release used with the specified matching circuit breaker. The accessory operates the breaker mechanism when its supply reaches the stated trip range.
Technical selection summary
| Exact accessory | OUVT-1 |
|---|---|
| Rated voltage / frequency | AC230V;50/60Hz |
| Compatible breaker | NB1-63 / NBH8-40 |
| Undervoltage operating range | 35%Ue≤U≤70%Ue |
| Overvoltage operation | 280V±14V |
| Insulation / enclosure | Ui500V;IP20 |
| Assembly side | Left side of the breaker |
| Wiring | Copper conductor1mm²;9mm strip length;0.8N·m |
Use this exact release and mounting side. This is a breaker accessory, not a standalone voltage protector or an overcurrent breaker. NXB-125 is not the compatible host in this OUVT-1 manual.
Typical applications
- CHINT OUVT-1 is a over/under-voltage release used with the specified matching circuit breaker.
Specify your enquiry
For a focused quotation, include:
- Complete host breaker model
- Control supply/frequency and quantity
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Product reference images and drawings










