DC Molded Case Circuit Breaker TDKD2

Technical Data

Core protection function

Overload Long Delay Protection: Equipped with a thermal magnetic or electronic trip unit, the protection function automatically starts when the circuit current exceeds the set value and continues for a specific period of time. This design can accurately distinguish between normal impulse current and fault current, effectively avoiding damage to the circuit due to continuous overload.

Short circuit short-time delay protection: with adjustable short-time delay characteristics. When a short circuit fault occurs in a branch, selective cooperation is achieved through delayed cooperation with downstream protection devices - only isolating the faulty circuit to avoid the entire system shutdown and maximize power supply continuity.

Short circuit instantaneous protection: When facing extreme short-circuit currents, the protection action can be triggered without delay, quickly cutting off the circuit and providing the highest level of safety protection for equipment and lines.

 Product Core Features

High breaking capacity: It can safely cut off the high amplitude fault current unique to high-power DC power supplies, avoiding the expansion of faults.

Powerful DC arc extinguishing system: using multiple arc extinguishing chambers and powerful magnetic blowing coils, the arc is quickly extinguished through the triple action of "stretching segmentation cooling", ensuring a reliable and efficient arc extinguishing process.

Modular design and rich accessories: supporting the combination of multiple functional accessories, flexibly adapting to the complex requirements of automation control systems, and expanding equipment application scenarios.

Sturdy structural design: The shell is made of high-strength and highly flame-retardant engineering plastic, which can safely accommodate internal arcs and high-temperature gases, enhancing the overall safety and durability of the equipment.

Main application areas

Large scale photovoltaic power station: used for circuit protection at the output end of the DC combiner box and the input end of the inverter.
Industrial and Commercial Energy Storage System (ESS): serves as the main protection switch for the battery cluster output terminal and the DC side of the energy storage converter.

Electric vehicle charging station: provides protection for the input power of high-power DC fast charging piles.

Urban rail transit and electric locomotives: adapted to the protection requirements of traction power supply DC circuits.

Ship power system, data center high-voltage direct current (HVDC) system.