1. Overview

The DW965 series intelligent universal circuit breaker absorbs the advantages of various intelligent circuit breakers at home and abroad. It has the characteristics of compact structure, high reliability, short full section time, and zero arcing. In addition to multifunctional protection features, it also has various auxiliary functions such as ammeter, voltmeter, power factor meter, contact wear indicator, mechanical life indicator, fault inspection, self diagnosis MCR, etc. It also has a communication interface and can achieve long-distance four remote functions. The product has passed the strict assessment of the latest international electromagnetic compatibility standard IEC60947-2 and various types of tests.  

The DW965 series intelligent universal circuit breaker has the following characteristics:

A. DW965 series intelligent universal circuit breaker with complete specifications
It comes in fixed, drawer style, and third - and fourth grade varieties. Rated currents of 400, 630, 800, 1000, 1250, 1600, 2000, 2500, 2900, 3200, 3600, 4000, 5000, 6300A and other specifications, with complete accessories.
B、 Circuit breakers have high rated short-time withstand current and breaking capacity.
The use of MCR and simulated trip function has improved the ultimate breaking capacity.
1nm=2000A 80KA/400V 65KA/690V
1nm=3200A 100KA/400V 80KA/690V
1nm=6300A 120KA/400V 85KA/690V
C、 Contact system of circuit breaker
Each phase contact is installed in an insulated compartment, and the contact system adopts a structure of multiple parallel connections of one stage contacts, with the functions of main contacts and arc contacts, while reducing electric repulsion and improving the electric stability of the contact system, ensuring the high breaking capacity of the circuit breaker.

operating mechanism
The operating mechanism of the circuit breaker is installed in the center of the circuit breaker, isolated from the main circuit. The circuit breaker is operated by a spring energy storage mechanism for fast closing speed.  
Long service life of circuit breaker
The number of connection/disconnection operations can reach 10000 times.  
No additional arcing distance
The upper part of the circuit breaker is equipped with an arc extinguishing cover, which uses a deionized grid plate compound arc extinguishing method. The arc extinguishing effect is good, and the flying distance on the circuit breaker is "zero".  
Can be wired up and down
The main circuit terminals of the circuit breaker do not need to distinguish between the power and load sides, and both the upper and lower incoming lines are applicable, with the same breaking capacity indicators.

2. Usage and classification

purpose
The DW965 series intelligent circuit breaker (hereinafter referred to as the circuit breaker) is suitable for AC 50HZ, rated voltages of 400V and 690V, and rated currents of 400A to 6300A. It is mainly used in distribution networks to distribute electrical energy, protect lines, and protect power equipment from overload, undervoltage, short circuit, single-phase grounding, and other hazards. This circuit breaker has multiple intelligent protection functions, which can achieve selective protection and precise action, avoiding unnecessary power outages and improving power supply reliability. Simultaneously equipped with an open communication interface, it can perform four remote operations to meet the requirements of the group center and automation system. This circuit breaker has a pulse withstand voltage of 8000V at an altitude of 2000M (adjusted according to standards for different altitudes, up to a maximum of 12000V). The circuit breaker does not come with an intelligent controller or sensor and can be used as an isolator. The standard is.
The circuit breaker complies with standards such as GB14048.2 "Low Voltage Switchgear and Control Equipment Circuit Breakers" and IEC60947-2 "Low Voltage Switchgear and Control Equipment Circuit Breakers".  

Model meaning and classification

3. Model and meaning

DW965 series intelligent universal circuit breaker