Three Phase Over and Under Voltage Protector

Our Three Phase Over and Under Voltage Protector is an intelligent monitoring and protection device designed for three phase power systems. It can monitor voltage abnormalities in real time, automatically cut off the power supply in case of overvoltage or undervoltage, and restore power supply automatically after the voltage returns to normal. Adopting integrated circuits and SMT chip technology, it ensures <1% measurement accuracy and stable performance. The flame retardant ABS casing is acid and alkali resistant, oil resistant, and long lasting. It is widely used in industrial automation, power distribution, and energy management scenarios, providing reliable protection for electrical equipment.

COMPANY INTRODUCTION

Committed to providing comprehensive services for industrial automation control. Satisfy the needs of all aspects of the power system with precise, reliable, energy saving, and environmentally friendly intelligent power distribution products. We adhere to strict quality control from R&D to production, ensuring each product meets international standards, and strive to be a trusted partner for global customers in the electrical measurement equipment industry.

NEW QUALITY UPGRADE & MORE DURABLE

Our three phase over/under voltage protector has undergone a full quality upgrade. Precision engineered from the inside out, each component is meticulously inspected from material selection to final assembly. We utilize integrated circuits and SMT chip technology to ensure accurate metering and stable performance. The shell is made of high strength flame retardant ABS material, which is acid and alkali resistant, oil resistant, anti aging and shockproof. Each product undergoes strict aging test, accuracy calibration and withstand voltage test before leaving the factory. It can operate stably for a long time in harsh industrial environments, with stronger safety performance and longer service life.

STRUCTURAL ANALYSIS

The protector adopts a compact and scientific structure, including 6 core components:

1. PHYSICAL SETTINGS BUTTON: Sensitive and responsive, easy to operate, supporting parameter setting and data query.

2. HIGH DEFINITION LED SCREEN: 178° full field of view, large character display, no blind spots for reading, clear data presentation.

3. FLAME RETARDANT CASING: High strength engineering plastic, anti aging, corrosion resistant, providing reliable safety protection.

4. TERMINAL WIRING PORT: Made of high conductivity copper, ensuring fast output and low loss, with strong overload resistance.

5. DIN RAIL MOUNTING SLOT: Standard DIN35mm rail design, compatible with various distribution cabinets, easy for quick installation.

6. INSTALLATION CLIP: Firm and stable, ensuring the protector is securely fixed on the guide rail, not easy to loose under vibration.

HIGH DEFINITION 178° FULL FIELD OF VIEW

Our protector is equipped with a high definition digital large screen display with large character display. It can be viewed from above, below, or side, with no blind spots. The instrument has strong anti interference capability and can achieve stable measurement with high precision, ensuring clear data reading in any installation angle.

SELF RESTORING FUNCTION & BUILT IN HIGH QUALITY CHIP

Using integrated circuits and SMT chip technology, it ensures accurate metering. When the voltage is too high or too low, it automatically disconnects the load and automatically detects the voltage in the circuit, resumes normal automatic closure, and restores power supply. This self restoring function effectively protects electrical equipment from damage caused by voltage abnormalities, with the advantages of sturdy, shockproof, durable, and easy installation.

OUR PRODUCTS VS. OTHER PRODUCTS

CORE ADVANTAGE

1. HIGH PRECISION: <1% measurement accuracy, ensuring accurate voltage monitoring and protection.

2. FLAME RETARDANT CASING: High strength ABS material, effectively preventing fires caused by short circuits and overloads.

3. EASY INSTALLATION: DIN35mm standard rail mounting, simple wiring, quick deployment.

4. SELF RESTORING PROTECTION: Automatically cuts off power during voltage abnormalities and restores power after recovery.

FOUR CORE SELLING POINTS

• FLAME RETARDANT CASING: Anticorrosion, wear resistant, insulating, and flame retardant, ensuring long term safe use.

• HIGH CURRENT TERMINAL BLOCK: Made of high conductivity copper, guarding the safety of electric current, with low loss and fast output.

• HIGH DEFINITION LED SCREEN: 178° full field of view, clear data display, no blind spots for reading.

• COMPLETE SPECIFICATIONS: Multiple models to choose from, meeting the needs of different working conditions.

THE SHELL IS STURDY AND SHOCK RESISTANT

The shell is made of high strength engineering plastic, and the surface has undergone fine processing until it is smooth and burr free, presenting a beautiful and elegant appearance. It has excellent shock resistance and compression resistance, can resist daily collision and mechanical vibration, and will not deform or damage. The material is anti corrosion and anti aging, suitable for long term stable use in various complex industrial environments, with an operating temperature range of up to 75°C.

FLAME RETARDANT ABS MATERIAL

The shell adopts high performance flame retardant ABS engineering plastic with excellent flame retardant and insulation properties. It can effectively inhibit combustion and prevent fires caused by high temperatures generated by instruments due to faults such as short circuits and overloads, thus better ensuring the overall safety of the power system. The material is also acid and alkali resistant, oil resistant, and anti aging, with a long service life.

HIGH QUALITY TERMINAL BLOCK

Using copper terminals, it not only ensures strong conductivity but also reduces losses. The wiring is simple, allowing for easy and quick installation. The high current terminal block guards the safety of electric current, with strong overload resistance and stable performance, ensuring safe and reliable operation of the protector.

CAN BE USED WITH DIN RAIL

It can be installed using the universal DIN35mm standard guide rail, unlocking more usage scenarios. The DIN rail mounting design is compatible with various distribution cabinets and electrical equipment, with easy installation and disassembly, no need for complicated tools, suitable for quick deployment in different scenarios.

EASY TO INSTALL & SECURE WIRING

The protector is suitable for DIN35mm standard guide rail, with easy installation and disassembly. The wiring diagram is clear and intuitive, with "IN" and "OUT" terminal marking, which can effectively avoid wrong wiring. The high current copper terminals are firm and reliable, not easy to loose under long term vibration, ensuring safe and stable operation.

PRODUCT DIMENSIONS

• Overall dimensions: 89mm (W) × 82.5mm (H) × 48mm (D)

• Screen height: 46mm

• Mounting dimensions: Compatible with DIN35mm standard guide rail

• Terminal layout: 8 terminals for input/output wiring

PRODUCT PARAMETERS

WIRING DIAGRAM

1. Connect the input terminals (N, L1, L2, L3) to the power supply.

2. Connect the output terminals (N, L1, L2, L3) to the load.

3. Ensure the wiring is firm and reliable, and the phase sequence is correct.

4. Power on the protector, set the over/under voltage parameters through the physical buttons.

Clear terminal marking and standardized wiring make installation safer and more efficient.

AUTHORITATIVE CERTIFICATION

Our three phase over/under voltage protector has passed professional laboratory testing and certification, in line with national and international industry standards. The whole production process implements strict quality control, including accuracy calibration, withstand voltage test, aging test and other links, ensuring the accuracy, safety and stability of each product. Authoritative certification provides a strong guarantee for global customers' bulk procurement and long term cooperation.

WIDELY USED

Our three phase over/under voltage protector is widely used in:

• SUBSTATION: Power monitoring and voltage protection

• AUTOMATION EQUIPMENT: Industrial process control and equipment protection

• FLOW PRODUCTION: Factory power supply monitoring and protection

• DISTRIBUTION CABINET: Power distribution system voltage protection

• RESIDENTIAL BUILDING: Household power supply protection and energy management

• DEPARTMENT STORE: Commercial building power supply monitoring and protection

FAQ 

1.WHAT IS THE MAIN FUNCTION OF THIS PRODUCT?

It is mainly used for monitoring voltage abnormalities in three phase power systems, automatically cutting off the power supply in case of overvoltage or undervoltage to protect electrical equipment, and restoring power supply automatically after the voltage returns to normal.

2.WHAT IS THE MEASUREMENT ACCURACY?

It adopts <1% high accuracy, which meets industrial measurement standards, ensuring accurate voltage monitoring and protection.

3.WHAT IS THE OVERCURRENT PROTECTION RANGE?

The overcurrent protection value is adjustable from 1A to 63A, which can meet the protection needs of different loads.

4.WHAT IS THE INSTALLATION METHOD?

It supports DIN35mm standard guide rail mounting, with simple wiring and quick installation.

5.DOES IT HAVE SELF RESTORING FUNCTION?

Yes, it can automatically disconnect the load during over/under voltage and restore power supply automatically after the voltage returns to normal.

6.WHAT IS THE OPERATING TEMPERATURE RANGE?

The product can operate stably at up to 75°C, suitable for various industrial environments.