In electrical systems where voltage stability is non-negotiable, our advanced Voltage Protectors deliver engineered solutions for power quality assurance. We specialize in designing protection systems that address complex transient events—including switching surges, lightning impulses, and harmonic distortions—through fast-acting semiconductor technology and intelligent voltage clamping.

Voltage Protector

Function Name	Description
Over-voltage Protection	Protects connected equipment from damage due to voltage surges by disconnecting the circuit when voltage exceeds a safe threshold.
Under-voltage Protection	Safeguards against low voltage drops by cutting off power to prevent equipment malfunction or data loss. Automatically restores after voltage stabilizes.
Over-current Protection	Prevents overheating or fire by interrupting the circuit if current exceeds safe limits, such as during motor startups or short-term spikes.
Leakage Protection	Detects and mitigates electrical leakage (e.g., from damaged insulation) to reduce shock risks and equipment damage, commonly used in appliances.
Short Circuit Protection	Instantly disconnects power during a short circuit to prevent catastrophic failures, such as in power supplies or industrial gear.
Input Voltage Range Support	Ensures operation across varying input voltages, adapting to residential or industrial environments without manual intervention. motor.
Overload Protection	Combats excessive power draws (e.g., from motors or compressors) by shutting down the circuit to avoid burnout.

Voltage Protector

Voltage Protector

Voltage protector is a multifunctional three-phase three-wire power supply system or monitoring and
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Features of voltage protector

1. Under voltage protection 210V-140V (adjustable) (default: 160V) 2. Over voltage proteciton 230V-300V (adjustable) (default: 280V) 3. Over current protection 1A-40A/63A (adjustable) (default: 20A) 4. Reconnect time (delay on time): 1s-300s (default: 5s) 5. Voltage meter 6. Ammeter Rated voltage: 220V; Frequency: 50Hz/60HZ Over current protection: 1A-40A/63A (adjustable) (default: 20A) Under-voltage action switch-off value: 210V-145V (adjustable) (default: 160V) Over-voltage action switch-off value: 230V-300V (adjustable) (default: 280V) Reconnect time (delay on time): 1s-300s (default: 5s) Error in real-time current, voltage : ≤5%

FAQ

What is a voltage protector and what does it do?
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A voltage protector is an electrical device that monitors circuit voltage. It cuts off power when voltage is too high/low, protecting electrical equipment from damage.
How can i ensure the good quality?
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Shanghai Dada Electric has a series of certification and ISO9001 quality management system certification, as well as , CB.CE.CCC..SEMKO, KEMA,ASTA.ROHS and some international CNAS certification laboratory certificates, so the products meet the standards of the International Electrotechnical Commission.
What are the advantages of our company?
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Our circuit breakers are known for their exceptional quality and reliability. We prioritize precision engineering, rigorous testing, and compliance with international standards. This results in products that offer superior performance and enhanced safety.