DC Molded Case Circuit Breaker TDKD3

Technical Data

Product Introduction

DC Molded Case Circuit Breaker is an efficient protective electrical appliance designed specifically for DC circuit systems. With excellent performance and reliable protection design, it is widely used in new energy, industrial DC distribution, energy storage systems, and other scenarios, ensuring the safe and stable operation of DC circuits. ​

In terms of core electrical parameters, the circuit breaker exhibits strong adaptability and safety. In terms of current specifications, its rated instantaneous trip current (Inm) is as high as 250A, which can flexibly respond to sudden large current surges in the circuit; The rated current (In) provides 10 optional specifications including 63A, 80A, 100A, 125A, 140A, 160A, 180A, 200A, 225A, and 250A, which can accurately match DC circuits with different power requirements and meet diverse distribution design requirements. ​

The voltage performance is equally excellent, with a rated insulation voltage (Ui) of 2100V for the circuit breaker, ensuring reliable insulation performance even in high voltage environments and effectively avoiding the risk of leakage; The rated working voltage (Ue) offers two options: 1500V and 2000V, which can be adapted to DC systems of different voltage levels and have a wide range of applications. In addition, its rated impulse withstand voltage (Uimp) reaches 15kV, which can withstand the instantaneous high voltage impact that may occur in the circuit, greatly improving the anti-interference ability and service life of the equipment in complex power grid environments. In terms of structural design, the circuit breaker adopts a 2-pole (2P) configuration, which is convenient for wiring and suitable for common DC circuit wiring requirements, with high installation flexibility. ​

In terms of protection function, the DC Molded Case Circuit Breaker achieves comprehensive circuit protection. Firstly, the overload long delay protection function can delay tripping according to the magnitude of the overload current when the circuit experiences continuous overload, which not only avoids misoperation caused by short-term overload, but also effectively protects the electrical equipment in the circuit from overload damage; Secondly, short-circuit short delay protection, when a short-circuit fault occurs in the circuit, it can quickly trip and cut off the faulty circuit, reducing the impact of short-circuit current on the distribution system and lowering the risk of fault expansion; Thirdly, short-circuit instantaneous protection can respond and trip in an instant for severe short-circuit faults, minimizing the duration of the fault and ensuring the safety and stability of the entire DC distribution system.