High voltage vacuum circuit breakers are one of Chengxi Electric's core product lines, built around vacuum arc extinguishing technology. These breakers are renowned for their high reliability, long operational lifespan, and wide adaptability. The product range includes both indoor types (such as VCX1, ZN85, VZF, VZD) and outdoor types (e.g., ZW32), suitable for 12kV and above high-voltage power distribution systems. They are widely applied in industrial and mining enterprises, power plants, substations, urban and rural power grids, and renewable energy projects for circuit control, protection, and frequent operation tasks.

These products offer significant advantages: the integrated solid-sealed pole design enables compact size and maintenance-free operation, with excellent dust and moisture resistance and high insulation levels. The operating mechanism is integrated with the breaker body, allowing flexible adaptation to both fixed and withdrawable switchgear cabinets (such as KYN28A-12 and XGN series), making installation convenient. Certain models, such as the VZD three-position vacuum circuit breaker, incorporate disconnector switches, grounding switches, and live-line sensors. The modular design simplifies interlocking logic, improves maintenance efficiency, and supports mechanical endurance of over 10,000 operations—ideal for high-duty applications.

In terms of environmental adaptability, these circuit breakers withstand ambient temperatures from -30°C to 40°C, operate at altitudes up to 1000 meters (with optional high-altitude versions), and endure seismic activity up to magnitude 8 and various pollution levels. Advanced manufacturing and rigorous quality control ensure every unit meets ISO and other international standards, delivering a safe, stable, and reliable high-voltage distribution solution for end users.

Air Circuit Breaker is primarily used in low-voltage power distribution systems, with an operating voltage range of 400V to 690V and a rated current from 400A to 6300A. It plays a vital role in the rational distribution of electrical energy and provides protection against overload, short-circuit, and undervoltage conditions. ACBs are widely used in large industrial plants, data centers, and other critical facilities where power reliability is paramount.

The product is available in fixed and withdrawable (draw-out) types, offering flexible installation options based on system configuration. Equipped with intelligent trip units, many models also feature communication interfaces that support remote monitoring, control, measurement, and signaling—commonly referred to as the four remote functions (telemetry, remote control, remote adjustment, and remote signaling). These functions enable ACBs to be seamlessly integrated into modern power management and automation systems.

Furthermore, the breaker's protection logic is precise and customizable, with optional modules available for residual current (earth leakage) protection. This enhances system safety, particularly in environments where personal protection and fire prevention are crucial.

Molded Case Circuit Breakers are core components in both industrial and residential power distribution systems. CHM1, DZ20, and other product series by Chengxi Electric feature high-strength molded plastic casings that offer both safety and compact structure. Designed for circuits with AC 50/60Hz, rated voltage up to 690V, and current from 16A to 800A, these breakers serve as reliable devices for infrequent switching and motor protection. They are widely used in residences, office buildings, and industrial production lines.

MCCBs provide several key advantages. They offer high breaking capacity, enabling rapid disconnection in the event of a short circuit. The product lineup is diverse, including basic protection models (CHM1 series), leakage protection versions (CHM1LE series), intelligent electronic control types (CHM1E series), and high-voltage models specifically for photovoltaic applications (CHM1HU series, rated 800V–1140V), catering to a broad range of power scenarios. The plastic casings are made from impact-resistant and flame-retardant materials, ensuring superior protective performance and compatibility with various installation methods.

Manufacturing strictly adheres to international standards to ensure reliable operation under ambient temperatures from -5°C to 40°C and high-humidity conditions. These breakers are designed for long mechanical life and stable electrical performance. A wide range of accessories—such as auxiliary contacts and shunt trips—enhance application flexibility, delivering safe, adaptable protection solutions for diverse distribution environments.