Electrical Under Voltage Auxiliary Release

Reliable Undervoltage Protection Component for Low Voltage Circuit Breakers

With 42 years of experience as a professional low-voltage electrical component manufacturer, our factory specializes in the independent production of Electrical under voltage auxiliary release (MN undervoltage auxiliary release). Designed for molded case circuit breakers and air circuit breakers, this component provides reliable undervoltage protection to prevent electrical equipment damage caused by abnormal voltage conditions.

The Electrical under voltage auxiliary release is available in AC220V and AC380V control voltage specifications. When the grid voltage drops below 70% of the rated voltage, it quickly triggers circuit breaker opening within 0.1 seconds, effectively preventing equipment burnout and motor stalling caused by undervoltage conditions.

The product adopts high-temperature resistant enameled coils and high-sensitivity electromagnetic cores, featuring low operating noise, stable tripping performance, and smooth mechanical movement. It is an essential safety protection accessory for low-voltage switchgear and power distribution cabinets.

Our 36,000㎡ standardized production facility is equipped with automatic coil winding machines, adhesive curing equipment, and electromagnetic performance testing systems. Every Electrical under voltage auxiliary release undergoes complete quality inspection procedures, including RoHs environmental testing of plastic housing materials, coil insulation withstand testing, electromagnetic action characteristic testing, and 48-hour high-temperature aging tests.

Products with abnormal operation, mechanical sticking, or insulation failure are immediately rejected or reworked. All finished products undergo 100% inspection before shipment with complete inspection records retained.

Our company complies with ISO14001 environmental management requirements. All components meet RoHs2.0 and REACH environmental standards. We have long-term cooperation experience supplying circuit breaker components for leading electrical brands such as Chint and Delixi, with products exported in batches to electrical component distributors in Southeast Asia and the Middle East.

Overseas switchgear manufacturers have verified that this Electrical under voltage auxiliary release can achieve more than 50,000 reliable operating cycles, with voltage triggering accuracy within ±2%. It is compatible with most mainstream domestic and international circuit breaker models, significantly reducing spare parts inventory requirements and after-sales maintenance costs.

Our professional R&D team develops multiple voltage specifications according to different regional power grid requirements and provides highly compatible undervoltage protection solutions for overseas electrical distributors.

OEM/ODM Customized Manufacturing Service

For global low-voltage switchgear manufacturers and electrical component distributors, our full range of Electrical under voltage auxiliary release products supports comprehensive OEM/ODM customization.

Customers only need to provide circuit breaker models, rated control voltage, and installation drawings. Our engineering team can develop dedicated MN release solutions according to actual requirements.

The minimum order quantity is only 1 piece. Customized samples can be developed within 1–3 months, and testing samples can be supplied for complete circuit breaker assembly verification under agreed cooperation conditions.

Before production, our electrical engineers provide remote selection guidance and compatibility recommendations for different circuit breaker models.

During manufacturing, customers can request real-time photos and videos of coil production, assembly processes, and aging tests. Long-term partners receive priority production scheduling for repeat orders, reducing delivery time.

Each Electrical under voltage auxiliary release comes with an 18-month factory warranty from the shipment date. Our dedicated after-sales team handles overseas component quality issues. If coil damage or housing breakage occurs during transportation, replacement or return solutions can be arranged.

Third-party factory inspections are also accepted based on customer-confirmed technical standards.

Our electrical component production capacity reaches 50,000 sets per month. Standard AC220V and AC380V Electrical under voltage auxiliary release models are available from stock. Standard products can be shipped within 5 working days, while customized voltage specifications or special installation structures can be delivered within 7–15 days.

Different voltage models can be mixed within one order for combined shipment. Large annual purchasing projects can receive flexible tiered discounts. Through direct factory supply, we provide overseas partners with complete customization, manufacturing, export protection, and technical support services.