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Auto-resetting Over & Under voltage protector

Ultimate Voltage Protection

Auto‑Resetting, Reliable, and OEM‑Ready

Protect critical equipment from voltage swings with Westhomes’ Auto‑Resetting Over/Under Voltage Protector. Designed for both residential and industrial applications, they continuously monitor supply voltage and automatically disconnect power if it swings outside the safe range. Once voltage returns to acceptable levels, it reconnects—no manual reset needed.

Our factory‑built, DIN‑rail mountable device supports wide input ranges, configurable trip thresholds, and fast response times to safeguard compressors, pumps, motors, solar inverters, HVAC units, and sensitive electronic equipment. Whether you need a simple analogue model or a digital protective relay, we’ve got it covered. With efficient production lines and ISO-certified manufacturing, Westhomes delivers quality, speed, and consistency—ideal for wholesalers, OEMs, and system integrators.

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FAQ

What’s an auto‑resetting over/under voltage protector? plus-square Created with Sketch Beta. minus-square Created with Sketch Beta.

It’s a safety device that disconnects the circuit when voltage levels go too high or low, then automatically reconnects when the voltage returns to safe levels—no button reset required.

Can I customize threshold settings and branding? plus-square Created with Sketch Beta. minus-square Created with Sketch Beta.

Absolutely. We provide full OEM/ODM service, letting you choose trip points, indicator types, housing color, and custom labeling to match your brand needs.

Where are these protectors commonly used? plus-square Created with Sketch Beta. minus-square Created with Sketch Beta.

They’re widely used to safeguard HVAC units, solar inverters, air compressors, pumps, motors, and household appliances that require protection from power surges and dips.

What certifications do these devices have? plus-square Created with Sketch Beta. minus-square Created with Sketch Beta.

Manufactured under our ISO-certified system, Westhomes protectors comply with IEC and CE standards. Specific certifications available upon request.

How fast do these devices respond to voltage issues? plus-square Created with Sketch Beta. minus-square Created with Sketch Beta.

They detect abnormal voltage and act within milliseconds, offering almost instantaneous protection—ensuring your connected equipment remains safe.

What’s the typical lead time and MOQ? plus-square Created with Sketch Beta. minus-square Created with Sketch Beta.

Standard models ship in about 15–20 days. We support low MOQ for market validation and competitive pricing for bulk OEM orders.

Are they easy to install and troubleshoot? plus-square Created with Sketch Beta. minus-square Created with Sketch Beta.

Yes—mountable on standard DIN rails with clear wiring terminals. Built-in LEDs and testing functions make installation and diagnostics simple for technicians.

How fast does it respond to voltage issues? plus-square Created with Sketch Beta. minus-square Created with Sketch Beta.

These protectors typically respond in just a few milliseconds after voltage deviation, providing rapid protection against surges or dips.

What types of control circuits are supported? plus-square Created with Sketch Beta. minus-square Created with Sketch Beta.

They are available in single-phase and three-phase four-wire versions to suit different installation needs. Output orientation (top or bottom) can also be customized.

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