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DC Circuit Breaker
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DC Circuit Breaker

CNLonQcom is a factory in China specialized in manufacturing DC circuit breakers. These circuit breakers are used for overcurrent protection and control in solar photovoltaic battery storage systems and DC circuits. They are available in various rated currents such as 10A, 16A, 32A, 40A, 50A, 63A, 80A, 100A, and 125A.


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Product Description

DC circuit breakers which accept customized provide functions for circuit interruption, short circuit protection, adjustment, and protection, effectively extending the lifespan of electrical equipment.

They protect electrical equipment from damage caused by overloads, short circuits, or other electrical faults.
1.DC circuit breakers effectively prevent the occurrence of arc faults and melting.
2.They help prevent electrical heating faults.
3.Suitable for extreme environments ranging from -40 degrees Celsius to 80 degrees Celsius.
4.Equipped with an IP65 UV-resistant enclosure for outdoor installations.

Product specifications table

 LQB1-63Z Series Circuit Breaker LQB1-63Z
Frame degree rated current (A) 63

Electrical performance
Ue rated operating voltage (V DC) 1P:DC250V 2P:DC550V 3P:DC750V 4P:DC1000V
Rated Current In (A) 6-10-16-20-25-32-40-50-63
Rated insulation voltage Ui (V DC) 800V
ated impact voltage Uimp (kV) 4
Ultimate breaking capacity lcu (kA) 6 6 6 6
Run breaking capacity lcs (%lcu) 75% 75% 75% 75%
Curve type C
Trip type Thermal-magnetic
Mechanical Actual average value 20000
Standard value 8500
Electric Actual average value 2500
Standard value 1500

Control and indication
Shunt release (SHT) Option
Undervoltage release (UNT)
Auxiliary contact (AX)
Alarm contact (AL)

Connection and installation
Wiring capacity (mm2) In ≤ 32A,1~25mm2,1 ≥ 40A,10~35mm2
Ambient temperature (℃ ) -90
Altitude ≤ 2000
Relative humidify ≤ 95%
Pollution level 3
Installation environment No obvious shock and vibration
Installation category Class Ⅲ
Installation DIN Standard rail


Product main images, design drawings, and application scenarios.

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