DC Molded Case Circuit Breaker TDKD1

Technical Data

Key Features

Overload Long-Time Delay Protection: Utilizes thermal-magnetic or electronic trip units to activate when current exceeds a set value for a specified duration. Effectively distinguishes between normal inrush currents and fault conditions, protecting lines from sustained overloads.

Short-Circuit Short-Time Delay Protection: Features an adjustable brief delay. For branch circuit faults, this delay ensures selective coordination with downstream protective devices, isolating only the faulty circuit to prevent total system shutdown and maximize power supply continuity.

Short-Circuit Instantaneous Protection: Provides the highest level of safety by triggering without delay in response to extreme short-circuit currents, rapidly cutting off the circuit.

Product Characteristics

High Breaking Capacity: Safely interrupts high-magnitude fault currents inherent to powerful DC power sources.

Robust DC Arc Extinction System: Employs a multi-splitter arc chute and powerful magnetic blow-out coils to stretch, split, and cool the arc, ensuring rapid and reliable arc quenching.

Modularity & Comprehensive Accessories: Supports various functional accessories to meet complex requirements of automated control systems.

Rugged Construction: The housing, typically made of high-strength, high flame-retardant engineering plastic, safely contains arcs and high-temperature gases generated internally.

Primary Applications

Large-Scale PV Power Plants: Protection for DC combiner box outputs and inverter inputs.

Commercial & Industrial Energy Storage Systems (ESS): Main protection switch for battery cluster outputs and the DC side of energy storage converters.

Electric Vehicle Charging Stations: Protection for the input power of high-power DC fast charging piles.

Urban Rail Transit & Electric Locomotives: Protection for traction power supply DC links.

Marine Power Systems & Data Center HVDC Power Systems.