Grid Stability

Over & Under Voltage Protection Relays

In markets with unstable grids, voltage swings destroy air conditioners, refrigerators and electronics. Walax over & under voltage protectors monitor the line continuously, disconnect on harmful fluctuations, and automatically re-energize when the supply returns to safe limits.

Product Range

Browse All Voltage Protection Relays

Adjustable over/under-voltage and current protection relays from 40A to 100A, single-phase 110V–420V, with LED display and DIN-rail mounting. Click any product for full specifications and wholesale pricing.

DIN Rail Voltage Relay 63A Adjustable Display

Dual Voltage Protector 220V 40A/63A 2P

Over/Under Voltage Protector 30A-100A 230V

Over/Under Voltage Protector 40A 230V DIN Rail

Over/Under Voltage Protector 63A 100V-420V Dual Display

Over/Under Voltage Protector 220V Adjustable

Over/Under Voltage Protector 63A 230V with Current

Voltage Current Protector 63A 110V/220V

Voltage Protector 63A DIN Rail Over-Current kWh

FAQ

Frequently Asked Questions

It continuously monitors supply voltage and disconnects the load when voltage rises above or falls below set thresholds, protecting appliances from brownouts, surges and phase faults.
Yes. Over-voltage and under-voltage limits are adjustable via front-panel buttons or trimmers, with LED display of the live value on display-equipped models.
MOQs are flexible per SKU to support mixed containers. Share your target quantities and models and we will confirm the best configuration.
Yes. Full OEM service includes logo printing on the front cover, custom packaging and barcodes.
Yes – type-test reports and CE documentation accompany every shipment. Country-specific certifications available on request.
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Need Over & Under Voltage Protectors Pricing?

Send your quantities and target delivery port – our export desk replies with a wholesale quotation within 4 business hours.

Packaging, Shipping & Ordering Terms

MOQ, lead time, payment terms and packing quantities vary by model. Contact us for MOQ & packing details for the models you need.

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