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6KA/10KA DC Type Miniature Circuit Breaker TDM5-DC

Talemod TDM5-DC miniature circuit breaker is used for over-current protection and short circuit protection of all power line facilities and electrical equipment in buildings, and completing infrequent switching operation for the lines in normal circumstance. The product is applied to the lines with AC 50/60Hz, rated voltage of 250-1000VDC, and rated working current up to 63A. The rated short-circuit breaking capacity has 6KA/10KA. The circuit breaker adopts modular design and complies with the standard IEC60947-2, has reliable performance, accurate protection characteristics, small size, and is suitable for industrial and commercial lighting distribution lines.

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Product Details

Technical Data

Standard	IEC60947-2
Rated current (In)	1-63A
Poles	1P 2P 3P 4P
Rated voltage (Ue)	250-1000VDC
lnsulation voltage (Ui)	500V for 1P,2P;1000V for 3P,4P
Rated frequency	50/60Hz
Rated breaking capacity (lcn)	6KA/10KA
Rated operating short circuit breaking capacity (lcs)	7.5KA
Energy limiting class	3
Tripping curve	B C D
Electrical life	4000
Mechanical life	20000

Installation

Protection degree	IP20
Reference temperature for setting of thermal element	30℃
Ambient temperature	-25~+40℃
Storage temperature	-25~+70℃
Terminalconnection type	Cable/U-type busbar/Pin -type busbar
Terminal size top/bottom for cable	25m㎡
Tightening torque	2.5N.m
Connection	Top and bottom

Combination with accessories

SHUNT RELEASE	YES
AUXILIARY CONTACT	YES
ALARM CONTACT	YES
UNDER VOLTAGE RELEASE	YES
OVER VOLTAGE RELEASE	YES

Product Overview

The DC Miniature Circuit Breaker (DC MCB) is an overload and short-circuit protection device specifically designed for DC power distribution systems, utilizing DC arc rapid extinction technology and polarity-sensitive protection mechanisms. Addressing the characteristic absence of natural zero-crossing points in DC current, this product achieves efficient interruption of fault currents through magnetic blowout arc extinguishing and segmentation technology. Its core value lies in solving the unique challenges of DC arc extinction, providing reliable protection for DC application scenarios such as photovoltaic power generation, energy storage systems, and electric vehicle charging.

Core Functions

DC Arc Control: Employs magnetic blowout arc chutes and metal splitter plates to forcibly elongate and cool DC arcs

Polarity Protection: Supports positive/negative pole identification to prevent equipment damage caused by reverse connection

Breaking Capacity Optimization: Designed for high DC short-circuit currents, featuring breaking capacity of 10kA and above

Wide Voltage Adaptation: Covers DC 12V-1500V voltage range, meeting requirements of different DC systems

Main Application Fields

Photovoltaic New Energy: PV string circuit protection, combiner box output protection

Energy Storage Systems: Battery charge/discharge circuits, PCS AC side DC protection

Electric Vehicles: Charging pile DC modules, vehicle power supply systems

Rail Transportation: Locomotive traction auxiliary circuits, subway DC panel protection

Communication Power: Communication base station DC power distribution, UPS battery circuit protection

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