China Medium voltage protection devices Manufacturer, Supplier, Factory

This circuit breaker is a multifunctional low-voltage protection device designed for distribution systems with AC 50Hz, rated voltage below 400V, and rated current below 63A. It is suitable for industrial, commercial, and civilian power networks. Its core functions integrate security protection, equipment protection, and intelligent monitoring, which can significantly improve the reliability and operation efficiency of the distribution system. Core functional highlights: 1. Safety protection 1) Personal safety assurance: Through high-precision residual current detection technology (RCD), indirect contact protection is provided, effectively reducing the risk of electric shock. 2) Equipment and line protection: Integrated overload and short circuit dual protection mechanism, accurately cutting off fault current, avoiding electrical fires and equipment damage. 2. Intelligent monitoring and early warning 1) Leakage pre-alarm function: Real-time monitoring of residual current in the circuit. When abnormal leakage (such as insulation degradation) is detected, an alarm signal is output through a passive normally open contact (dry contact). It can be linked to SCADA, fire protection system or sound and light alarm device without an external power supply to achieve early warning of faults and ensure power supply continuity. 2) Flexible threshold configuration: supports custom setting of leakage alarm values, adapting to sensitivity requirements of different scenarios (such as 30mA/100mA adjustable). 3. Diversified control ability Line and motor control: suitable for occasional switching operations of distribution lines or intermittent start-stop control of small motors, meeting the requirements of nonfrequent operation scenarios. Typical application scenarios: 1) Key power supply areas: places with high requirements for power continuity, such as data centers and hospital IT systems, have alarm nontrip mechanisms to avoid accidental power outages. 2) Equipment protection: Front-end protection for devices such as frequency converters and outdoor electrical cabinets that are susceptible to electrical leakage or environmental impact. 3) Intelligent operation and maintenance: By connecting to the building management system (BMS) through touch signals, remote monitoring and preventive maintenance can be achieved. Product advantages: 1) High reliability: thermal magnetic double trip structure, balancing overload delay protection and short-circuit instantaneous action characteristics. 2) Flexible expansion: an optional communication module, supporting remote status monitoring and fault diagnosis. 3) Easy installation: Standardized modular design, compatible with mainstream rail installation, suitable for compact distribution boxes. Summary: This circuit breaker is designed with the concept of "warning first, safety oriented", which ensures the safety of personnel and equipment while maximizing the stability of system operation. It is the preferred protective device for modern intelligent distribution systems.

40.5KV 1600 amp Outdoor high-voltage SF6 circuit breaker is a three-phase AC 50HZ outdoor high-voltage switchgear suitable for the control and protection of 40.5KV transmission and transformation systems. It can also be used as a connecting circuit breaker and a combination of opening and closing devices. The LW8-40.5AG circuit breaker adopts the principle of "thermal expansion+auxiliary blowing" intelligent extinguish arcs, equipped with a CT10 spring operating mechanism. The circuit breaker complies with GB/T1984-2014 "AC High Voltage Circuit Breakers" and meets the requirements of the International Electrotechnical Commission standard IEC62271-100:2001 "High Voltage Switchgear and Control Equipment - Part 100: High Voltage AC Circuit Breakers".

This 126KV HV Outdoor high-voltage SF6 single-phase circuit breaker is suitable for use in 72.5KV and 126KV three-phase AC 50HZ transmission and transformation systems. Its primary purpose is to regulate and safeguard these systems, but it can also function as a contact breaker and opener group, offering versatility in its applications.

The DZ47Z series miniature circuit breaker is suitable for overload and short circuit protection of lines, lighting, and power equipment in DC circuits with a rated voltage of 750V and a rated current of 63A and below. It can also be used for infrequent switching of lines and equipment under normal conditions. The product meets the standards of IEC60898-2 and GB/T14048.2.

LW8-35 36KV 3150A Outdoor HV SF6 Circuit Breaker is applicable for outdoor 50Hz three-phase HV electric equipment and control & protection of 36kV power distribution & transmission system, as well as measurement and protection via the breaker enclosed current transformer. Breaker is also used for interconnected circuit breakers and switching capacitor banks.

Elevate your power infrastructure with Kexunan's 12KV 630A Potential Transformer Switchgear Busbar PT Cabinet Medium Voltage Switchgear. As a leading manufacturer in the field, Kexunan takes pride in delivering durable and reliable switchgear solutions. Crafted with precision, our switchgear is designed to endure and excel in medium voltage applications. Trust in Kexunan as your manufacturer of choice, and experience the resilience and longevity that our switchgear brings to your power distribution system. Choose Kexunan for durable, high-quality solutions that meet and exceed industry standards.