Scope of application
The GM5B-32 three-stage protection small DC circuit breaker applies advanced electronic delay control technology, fault current sampling components, and a series of proprietary technologies from our factory, which make the short delay action performance independent of the power supply voltage. At rated current, the electronic control circuit has almost no voltage, achieving the goal of small volume, precise delay protection, high product service life and reliability for power protection system requirements, and comprehensively improving the guarantee ability of DC power supply.

The GM5B-32 three-stage protection small DC circuit breaker is the core project independently developed by our factory as a new product. It is a major technological breakthrough in the field of DC distribution protection. In addition to its outstanding advantages such as precise and reliable delay protection function, it also has the smallest volume compared to the previous year (GMB32 width is 72mm). While effectively reducing the space occupied by distribution appliances, it will also greatly improve the protection level of the DC power system.

The successful development of GM5B-32 three-stage protection small DC circuit breaker not only meets the demand for high-precision "three-stage" protection DC circuit breakers in domestic and foreign markets, but also comprehensively improves the independent innovation ability of national enterprises in this industry, effectively promotes industry technological progress, and further consolidates and expands our factory's leading advantages in the field of power protection technology at home and abroad.

The GM5B-32 series plastic shell three-stage protection DC circuit breaker complies with GB14048.2 "Low Voltage Switchgear and Control Equipment - Low Voltage Circuit Breakers" and is suitable for use in power engineering with a nominal DC voltage of 110V or 220V, a maximum working voltage not exceeding 250V, and a rated current of 16A to 32A. It is used for overcurrent protection of line facilities and electrical equipment, and can also be used for infrequent on-off operations. This circuit breaker has the characteristics of small size and short delay action, which is independent of the power supply voltage and only depends on the magnitude of the short-circuit current. This product is suitable for use by non professionals.  

Technical Specifications