Voltage/Current protector

Smart Digital Display Voltage/Current Protector
The OBCH Overvoltage and Undervoltage Protector Series integrates three core technologies: wide voltage tolerance, 0.2-second ultra-fast power disconnection, and IP20 dust and water resistance. Designed specifically for scenarios such as retrofitting older residential areas, upgrading high-end residential units, and protecting branch-circuit appliances, OBCH delivers comprehensive solutions for all scenarios, including:
Choose The Best Voltage/Current protector

OBS7-6-VA/1P+N/63A

Digital voltage/current protector with lighting logo

Designed as a cutting-edge electrical safety solution, the Household Over-Voltage & Under-Voltage Protector is built to automatically disconnect power the moment it detects abnormal voltage fluctuations.

OBS7-6-VA/1P+N/80A

Digital voltage/current protector with lighting logo

As a state-of-the-art electrical safety device, the Household Over-Voltage and Under-Voltage Protector features intelligent voltage monitoring capabilities. It triggers an automatic power cut whenever it identifies voltage levels that fall outside the normal threshold.

OBS7-6-VA/1P+N/100A

Digital voltage/current protector with lighting logo

Crafted as an innovative safeguard for household electrical systems, the Household Over-Voltage & Under-Voltage Protector is engineered to cut off power supply instantly upon detecting voltage anomalies.

OBS7-6-VA/3P+N/63A

Three Phase Digital Voltage/Current Protector with Lighting Logo

As an innovative new-generation 3-Phase Over-Voltage and Under-Voltage Protector , this advanced electrical safety device is engineered to automatically cut off the power supply upon detecting abnormal voltage levels.

OBS7-6-VA/3P+N/80A

Three Phase Digital Voltage/Current Protector with Lighting Logo

As an innovative new-generation 3-Phase Over-Voltage and Under-Voltage Protector, this advanced electrical safety device is engineered to automatically cut off the power supply upon detecting abnormal voltage levels.

OBS7-6-VA/3P+N/100A

Three Phase Digital Voltage/Current Protector with Lighting Logo

As an innovative new-generation 3-Phase Over-Voltage and Under-Voltage Protector, this advanced electrical safety device is engineered to automatically cut off the power supply upon detecting abnormal voltage levels.

OBS7-5-VA/1P+N/40A

Best selling Digital voltage/current protector 1P+N

A high-end electrical safety device, the Household Over-Voltage and Under-Voltage Protector is built to turn off power automatically whenever voltage levels are detected to be abnormal.

OBS7-3-VA/1P+N

Digital voltage/current protector using Magnetic core

The Household Over-Voltage and Under-Voltage Protector is a smart electrical safety tool. It is crafted to shut off power supply automatically when abnormal voltage levels are sensed.

OBS7-5-VAM/1P+N/40A

Multi-functional protector 1P+N

The Household Over-Voltage and Under-Voltage Protector serves as an advanced electrical safety tool. It is designed to disconnect power automatically when it detects that voltage levels are outside the normal range.

OBS7-VA/3P+N

Three phase voltage protector 3P+N

As a cutting-edge new-generation 3-Phase Over-Voltage and Under-Voltage Protector, this sophisticated electrical safety device is designed to automatically shut off power when abnormal voltage levels are detected.

OBS7-1-VA/1P+N

Digital voltage/current protector 1P+N

The Household Over-Voltage and Under-Voltage Protector is a sophisticated electrical safety device. It is engineered to automatically cut off power supply the moment abnormal voltage levels are identified.

OBS7-2-VA/1P+N

Digital voltage/current protector 1P+N

As an advanced electrical safety device, the Household Over-Voltage and Under-Voltage Protector is designed to disconnect power automatically whenever it detects unusual voltage fluctuations.

Advantages of the OBCH Voltage/Current protector
The drive for innovation propels our team to create novel smart overvoltage and undervoltage protectors for your market.
Long-Lasting Durability
Extended operational lifespan

With 1 million mechanical operations and 100,000 electrical operations, reliability is assured.

Durable construction and electrical components

Utilizing premium electronic components and IP20 protection rating, it operates reliably even under harsh conditions.

Withstand Voltage Fluctuations

Allows safe voltage fluctuations within ±15% range, activating only when thresholds are exceeded to prevent false tripping caused by normal grid variations.

Durable construction and electrical components

Cuts power in ≤0.2 seconds to prevent damage to air conditioner compressors, precision circuits, and other equipment from voltage surges.

Safe and Reliable
Flexible Configuration
Easy Installation and Maintenance

Modular design enables rapid installation and effortless maintenance, minimizing downtime.

Indicators and Status Display

Clear LED indicators or LCD screens display operational status (Normal, Overvoltage Trip, Undervoltage Trip, Fault, etc.).

Why Are You Still Using OBCH Voltage/Current protector?
Comparison item OBCH Ordinary
Connection solution

Hard connection:

Rated for high current

Soft connection:

Limited to low current

PCB

Conformal Coated PCB:

Moisture-proof / Corrosion resistance /

Hand-brushed rosin (flux) solution:

Harmful fumes / Hygroscopic

Magnetic core

Potting magnetic core:

Precision Current Measurement

Ordinary magnetic ring:

The outer skin is prone to detachment

Relay

Brand new relay:

Longer life time

Used relay:

Easy to drop, life time is short

Why Choose us
OBCH Possesses Extensive Experience in ODM and OEM Projects.

100

Serving over 100 countries

350

Completed over 350 OEM and ODM projects

15

15 years of manufacturing experience

Automated Production Line

15 years of factory expertise, professional management, automat / semi-automated production equipment, quality under control.

100% Quality Inspection

Strict end-to-end quality control system, 100% inspection of raw materials and finished products to ensure consistent quality.

Continuous Innovation

R&D department launches new products quarterly, continuously expanding the company's product line with functionality far surpassing competitors.

Fast Delivery

Our proprietary brand products follow a stable production process, ensuring consistent supply. Short lead times of 15-25 days.

Exceptional After-Sales Support

We offer an extended 2-year warranty. Our 24 / 7 professional support team provides rapid diagnostics and solutions, keeping your systems stable and running smoothly.

Flexible Ordering, Cost Optimization

We offer generous channel support policies for distributors and agents: price support, after-sales support, and marketing support.

Frequently Asked Questions & Answers
Here you can find Q&A related to customization, service, and quality of overvoltage and undervoltage protectors:
Customization Advantages

Our technical team can modify circuit boards as needed

Customizable appearance including color, screen, and LED displays

Customizable test benches available

GET A QUOTE

GET IN TOUCH NOW
Captcha Code