OUVP, ATS, SPD Manufacturer — Hobest Electrical Protection

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Over/Under Voltage Protector (OUVP)

The Over/Under Voltage Protector monitors line voltage in real time, automatically disconnects the circuit when voltage exceeds the set range, and automatically recloses after voltage returns to normal. It protects downstream equipment from over-voltage and under-voltage damage. Widely used in terminal distribution protection for residential, commercial buildings, and industrial applications.

Automatic Transfer Switch (ATS)

The Automatic Transfer Switch (ATS) is used for automatic switching between dual power sources. When the main power fails, it automatically transfers to the backup power source, and automatically resets after the main power is restored. Suitable for uninterrupted power supply protection of critical loads, widely used in hospitals, data centers, fire protection systems, and other applications where power interruption is not allowed.

Surge Protective Device (SPD)

The Surge Protective Device (SPD) protects electrical and electronic equipment from lightning electromagnetic impulses and switching overvoltage damage. Suitable for all protection levels in low-voltage distribution systems, from building main distribution cabinets to terminal equipment, providing comprehensive protection solutions to ensure safe equipment operation.

Circuit Breaker

Circuit breakers for overload and short-circuit protection in AC/DC circuits. Widely used in terminal distribution systems for residential, commercial and industrial applications.

Electricity meter

Capable of recording power consumption, voltage, current, power and other key electrical parameters.

Fuse

Fuses for overcurrent and short-circuit protection in low-voltage distribution systems. When current exceeds the rated value, the fuse element melts and interrupts the circuit, protecting wiring and downstream equipment. Widely used in residential, commercial and industrial applications.

AC Contactor

The AC Contactor is suitable for AC 50/60Hz circuits up to 690V, used for remote making and breaking of circuits, and can be combined with thermal relays to form motor starters. Widely applied in motor control, lighting control, and power system automation.

Thermal Overload Relay

The Thermal Overload Relay is used in AC 50/60Hz circuits up to 690V to protect motors against overload, phase failure, and prolonged starting time. It works in conjunction with AC contactors to form motor starters, with automatic or manual reset capability.

Voltage Protection Socket

The Voltage Protection Socket integrates over/under voltage protection with a power socket in one unit. It plugs directly into wall sockets or socket strips to provide over-voltage and under-voltage protection for connected appliances. Compact and plug-and-play, suitable for voltage protection of household appliances, office equipment and other single-phase devices.

Time Switch

The Time Switch automatically turns circuits on/off according to preset schedules, enabling timed control of lighting, water pumps, advertising light boxes, electric water heaters, and other equipment. Mechanical types are reliable and durable; electronic types offer high accuracy with multi-period programming. Widely used for automated energy-saving management in residential, commercial, and industrial applications.

Waterproof Distribution Box

The Waterproof Distribution Box is used for centralized installation and protection of circuit breakers, contactors and other electrical components in outdoor or wet environments. Made of high-strength engineering plastic or metal, with IP65 and above protection rating, effectively preventing rain and dust ingress. Widely used for distribution protection in construction sites, agricultural irrigation, outdoor lighting, marinas, and other locations.