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Home > Electrical & Electronics > Power Supply & Distribution > Switchgear > Single Phase Over Voltage Under Voltage Protective Device With Digital Display Relay

Single Phase Over Voltage Under Voltage Protective Device With Digital Display Relay

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Product Spotlights

Features a clear digital display for real-time voltage monitoring and offers adjustable over & under voltage protection. DIN rail mounted for easy panel integration, it safeguards equipment from damage due to voltage fluctuations, reducing downtime. User-configurable trip points and delays provide application flexibility. Built with quality components for reliable performance in residential, commercial, and industrial single-phase systems.

US$ 3.12 ≥10 Units

Key Specifications

Get Latest Price

Product Type:

Protective Relay

Phase Configuration:

Single Phase

Protection Function:

Over Voltage & Under Voltage

Contact Supplier Request Quote Chat Now

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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Product Type Protective Relay

Phase Configuration Single Phase

Protection Function Over Voltage & Under Voltage

Display Type Digital Display

Mounting Type DIN Rail Mount

Primary Application Electrical Distribution Panel Protection

Operating Voltage Range Customizable based on model

Output Type Relay Contact (SPDT/DPDT)

As a specialized manufacturer of electrical protection equipment, Jinhua Dika Electrical Equipment Co., Ltd. is proud to introduce our advanced Single Phase Over Voltage Under Voltage Protective Device with Digital Display Relay. Engineered for precision and reliability, this device is a critical safeguard for electrical systems, preventing costly damage to sensitive equipment caused by voltage fluctuations. Our commitment to quality, backed by rigorous certifications like ISO9001, ensures that every unit delivers consistent performance and peace of mind for our global clientele.

This protective relay stands out with its clear digital display, providing real-time monitoring of voltage levels. It is designed for easy integration into single-phase electrical panels, offering a robust defense against both overvoltage and undervoltage conditions. By automatically disconnecting the load when unsafe voltage levels are detected, it protects motors, compressors, HVAC systems, and other valuable assets from premature failure.

Key Features & Technical Advantages:

Intelligent Digital Monitoring: The integrated digital display shows real-time voltage readings with high accuracy, allowing for easy setup and visual status confirmation.
Dual Protection Mechanism: Provides comprehensive protection by triggering a relay output when voltage exceeds (Over) or falls below (Under) the user-defined setpoints.
High Precision & Fast Response: Utilizes advanced microprocessing technology for accurate voltage measurement and a rapid response time to mitigate risks quickly.
User-Friendly Configuration: Adjustable voltage trip points and delay times (on/off) can be easily set via front-panel buttons, making it adaptable to various application requirements.
Durable DIN Rail Design: Compact and designed for standard DIN rail mounting (35mm), facilitating easy installation in control panels and distribution boards.
Wide Operating Range: Typically supports a broad input voltage range (e.g., 80-300V AC), making it suitable for different regional grid standards.
Clear LED Indication: Features LED indicators for power status, alarm condition, and relay state, enhancing operational visibility.

Detailed Technical Specifications:

Parameter	Specification
Rated Supply Voltage	110V AC / 220V AC (Single Phase)
Measurement Range	Typically 80V - 300V AC (Customizable)
Setting Range (Over Voltage)	Adjustable, e.g., 200V - 280V
Setting Range (Under Voltage)	Adjustable, e.g., 160V - 220V
Trip Delay Time	0.1s - 30s (Adjustable)
Reset Delay Time	0.1s - 30s (Adjustable)
Output Relay Contact	SPDT or DPDT, 5A-10A @ 250V AC
Display	3-digit or 4-digit LED/LCD Digital Display
Operating Temperature	-10°C to +55°C
Mounting	35mm DIN Rail
Dimensions (approx.)	Available upon request

Benefits for Your Business:

Equipment Longevity: Prevents motor burnout, compressor damage, and electronic failure by cutting off power during voltage anomalies, extending equipment life.
Reduced Downtime & Maintenance: Minimizes unexpected breakdowns and associated repair costs, ensuring smoother operation.
Enhanced Safety: Protects against fire risks and electrical hazards that can arise from sustained overvoltage conditions.
Energy Efficiency: Helps maintain optimal operating conditions for equipment, which can contribute to lower energy consumption.
Operational Clarity: The digital display allows personnel to quickly diagnose grid voltage issues without external meters.

Trust and Global Reach:

Jinhua Dika Electrical operates with a strong foundation of quality management systems, including ISO9001 and ISO14000 certifications. With an annual export value in the range of US$1-1.5 Million and a dedicated team of 11-50 professionals, we have established a reliable supply chain trusted by partners in North America, South America, Europe, Asia, Africa, and Oceania. Our products are shipped from major Chinese ports like Shanghai, Tianjin, Guangzhou, and Ningbo, ensuring timely delivery worldwide. Choosing our protective device means partnering with a manufacturer committed to international standards and customer satisfaction.

This device represents a smart, cost-effective investment for any facility relying on stable single-phase power. Its combination of precise digital monitoring, robust protection, and user-configurable settings makes it an indispensable component for modern electrical protection strategies. Contact us today to discuss how this Single Phase Voltage Protective Device can be tailored to secure your specific applications and to request detailed specifications or samples.

Frequently Asked Questions (FAQ):

Q: What is the primary purpose of this device?
A: Its primary purpose is to monitor single-phase AC voltage and automatically disconnect the connected load if the voltage goes above (over) or below (under) preset safe limits, thereby protecting electrical equipment.
Q: Can I adjust the voltage trip points?
A: Yes. The device features user-adjustable settings for both over-voltage and under-voltage trip levels, as well as adjustable time delays for trip and reset actions.
Q: Is the digital display readable in low light?
A: Typically, these devices use bright LED or backlit LCD displays that are clearly visible in various lighting conditions found in electrical panels.
Q: What type of load can the output relay control?
A: The relay contact is rated for inductive and resistive loads (e.g., 5-10A at 250V AC). It can directly control contactors, alarms, or small loads, or signal a larger breaker or control system.
Q: How is the device powered?
A: It is powered directly from the same single-phase line it is monitoring, eliminating the need for a separate power supply in most standard installations.
Q: Is it suitable for both residential and industrial use?
A: Absolutely. It is commonly used in residential complexes, commercial buildings, industrial control panels, agricultural systems, and anywhere single-phase equipment needs protection from voltage instability.
Q: Can it protect against short circuits or overloads?
A: No. This device specifically protects against voltage variations. Protection against short circuits and overloads requires additional devices like circuit breakers or fuses.
Q: Do you offer different models for different voltage standards (e.g., 110V vs 220V)?
A: Yes. We offer models calibrated for different nominal voltage systems (e.g., 110V/120V or 220V/230V/240V). Please specify your local standard when inquiring.