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Home > Electrical & Electronics > Power Supply & Distribution > Switchgear > Single Phase Voltage Protection Device for Industrial Motor and Pump Applications

Single Phase Voltage Protection Device for Industrial Motor and Pump Applications

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Single Phase Voltage Protection Device for Industrial Motor and Pump Applications thumbnail-4

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Single Phase Voltage Protection Device for Industrial Motor and Pump Applications photo-1

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Single Phase Voltage Protection Device for Industrial Motor and Pump Applications photo-5

Product Spotlights

Reliable single-phase voltage protector for industrial motors and pumps. Guards against over/under voltage and phase loss with adjustable settings. Features DIN rail mounting, clear LED indicators, and a robust relay output. Reduces downtime, protects assets, and is easy to install. Backed by ISO9001 certified manufacturing and global export experience.

US$ 3.12 ≥10 Units

Key Specifications

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Phase:

Single Phase

Application:

Industrial Motor and Pump Protection

Protection Functions:

Over Voltage, Under Voltage, Phase Loss

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Jinhua Dika Electrical Equipment Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Phase Single Phase

Application Industrial Motor and Pump Protection

Protection Functions Over Voltage, Under Voltage, Phase Loss

Mounting Type DIN Rail Mount

Operating Voltage Range 100-300V AC

Output Configuration SPDT Relay Output

Adjustable Parameters Voltage Thresholds, Time Delays

Certifications ISO9001, CE (optional)

Enclosure Rating IP20 (standard)

As a professional manufacturer with over a decade of experience in electrical protection solutions, Jinhua Dika Electrical Equipment Co., Ltd. proudly presents our advanced Single Phase Voltage Protection Device. Engineered specifically for the demanding environments of industrial motors and pumps, this device is a critical component in preventing costly equipment failures and ensuring operational continuity. Our commitment to quality, backed by a robust ISO9001 certified manufacturing process and an annual export value reaching US$1.5 million, ensures that every unit delivers reliable performance you can trust.

This protection device acts as a vigilant guardian for your single-phase electrical equipment. It continuously monitors the supply voltage and automatically disconnects the motor or pump in the event of hazardous voltage conditions, such as overvoltage, undervoltage, or phase loss. By integrating this device into your system, you significantly reduce the risk of motor burnout, winding damage, and mechanical stress on pumps, leading to lower maintenance costs and extended equipment lifespan.

Core Features & Technical Advantages:

Comprehensive Voltage Protection: Offers precise protection against overvoltage and undervoltage scenarios, with user-adjustable threshold settings to match specific motor nameplate ratings and application requirements.
Phase Loss Detection: Instantly detects a single-phase loss condition, which is a common cause of motor overheating and failure in three-phase systems operating with a phase loss.
Configurable Time Delays: Features adjustable trip and reset delay timers to prevent nuisance tripping from transient voltage spikes and allow for stable system recovery.
DIN Rail Mounting & Compact Design: Designed for easy integration into standard control panels and distribution boards, saving valuable panel space.
Clear Visual Indicators: Equipped with LED status indicators for power, alarm, and trip state, providing immediate operational feedback.
Robust Relay Output: Utilizes a high-quality SPDT (Single Pole Double Throw) relay output capable of directly controlling contactors or alarms, suitable for a wide range of load currents.

Detailed Technical Specifications:

Parameter	Specification
Rated Supply Voltage	100-300V AC, 50/60Hz
Overvoltage Trip Range	Adjustable, typically 110%-130% of nominal voltage
Undervoltage Trip Range	Adjustable, typically 70%-90% of nominal voltage
Trip Delay Time	0.1s to 30s (adjustable)
Reset Delay Time	0.1s to 300s (adjustable)
Output Relay Contact	SPDT, 5A @ 250V AC resistive
Operating Temperature	-25°C to +70°C
Mounting	Standard 35mm DIN Rail
Enclosure Protection	IP20 (higher ratings available upon request)

Benefits for Your Operation:

Asset Protection: Safeguards expensive motors and pumps from voltage-related damage, protecting your capital investment.
Reduced Downtime: Prevents unexpected failures, minimizing production stoppages and maintenance interventions.
Energy Efficiency: Helps motors operate within their optimal voltage range, which can contribute to improved energy consumption.
Easy Installation & Setup: Simple wiring and straightforward adjustment via potentiometers or DIP switches reduce commissioning time.
Versatile Application: Ideal for a wide array of single-phase equipment including water pumps, air compressors, fans, conveyors, and agricultural machinery.

Trust in a product backed by a manufacturer with a global footprint. Jinhua Dika serves markets across North America, South America, Europe, Asia, Africa, and Oceania, exporting through major ports like Shanghai, Tianjin, Guangzhou, and Ningbo. Our dedicated team of 11-50 professionals is focused on delivering electrical protection solutions that meet international standards. Choose our Single Phase Voltage Protection Device to add a layer of security and intelligence to your industrial applications. Contact us today to discuss your specific requirements or to request a sample.

Frequently Asked Questions (FAQ)

Q: Can this device protect a three-phase motor if one phase is lost?
A: Yes, absolutely. One of its key functions is phase loss detection. If one phase is lost in a system where the motor is still single-phase powered or affected, the device will trip to protect the motor from running on an unbalanced or reduced voltage, which causes overheating.
Q: How do I set the correct voltage thresholds for my motor?
A: The thresholds are easily adjustable. Refer to your motor's nameplate for its rated voltage. Typically, the undervoltage setting is 10-15% below, and the overvoltage setting is 10-15% above this rated value. Fine-tuning can be done based on your local grid stability.
Q: Does it require an external power supply?
A: No, it is self-powered. The device derives its operating power directly from the monitored voltage line (100-300V AC), simplifying installation by eliminating the need for a separate control power source.
Q: What is the difference between trip delay and reset delay?
A: Trip delay prevents immediate shutdown during very short voltage sags or surges (like motor startups), allowing only sustained faults to cause a trip. Reset delay keeps the device off for a set period after a trip, allowing system voltages to stabilize before automatically attempting a restart, which can be customized or set for manual reset.
Q: Is this device suitable for use with submersible pumps?
A: Yes, it is commonly used to protect submersible pumps. The protection against voltage fluctuations is crucial for submersible motors, which are costly to repair or replace. Ensure the control panel housing the device is in a dry location.
Q: Can the output relay directly switch the motor contactor coil?
A: Yes. The SPDT relay output is designed to handle typical contactor coil currents. Please verify that the coil inrush and holding current of your contactor are within the relay's rating (5A AC).
Q: Are certifications like CE available for this product?
A: While our manufacturing system is ISO9001 certified, specific product certifications like CE are available upon request. Please contact our sales team to confirm the certification status for your target market.
Q: What happens after a trip? Does it reset automatically?
A: The reset behavior is configurable. You can set a reset delay for automatic recovery once the voltage normalizes, or you can set it for manual reset via a front button or remote signal, depending on the model variant.