Over/Under Voltage Protector 40A 230V DIN Rail Adjustable
Walax 40A over/under voltage protector for 230V single-phase. A compact adjustable relay that guards a dedicated circuit or appliance group against brownouts and overvoltage.
- Factory-direct pricing · OEM/ODM branding · IEC/CE compliance
- Wholesale & project supply to Africa, SE Asia & the Middle East
40A Rating
The popular mid-range rating for dedicated appliance circuits.
Adjustable Protection
Set over and under voltage limits and re-connect delay to your needs.
Compact DIN-Rail Body
Small footprint for dense distribution boards.
Technical Specifications
Standard ratings listed below – custom configurations available on request. Contact our engineers to confirm parameters for your market.




| Standard | IEC 60947-5-1 · CE |
| Rated current (In) | 40A |
| Rated voltage | AC 230V (50/60Hz) |
| Over-voltage threshold | Adjustable |
| Under-voltage threshold | Adjustable |
| Re-connect delay | Adjustable |
| Mounting | 35mm DIN rail |
| Ambient temperature | -5°C to +40°C |
Where These Relays Install
Dedicated circuits protecting air-conditioners, water heaters, pumps and other sensitive appliances on 230V supplies with unstable voltage.
Frequently Asked Questions
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