DNB1Z-63 Miniature DC Circuit Breaker

The DNB1Z-63 miniature DC circuit breaker, manufactured by Chinese manufacturer GREENWATT, is suitable for DC power distribution in photovoltaic and other applications: 250 V (1P), 800 V (2/3P), and 1200 V (4P). This product features arc extinguishing and current limiting functions, quickly interrupting faults. Our products are made of high-quality materials and are readily available for purchase.
Altitude: ≤ 2000 meters
Operating Temperature: -25 to +40°C (24-hour average: ≤ +35°C).

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Product Description

Our DNB1Z-63 miniature DC circuit breaker is designed for DC power distribution, particularly for solar photovoltaic systems. It is rated for operating voltages up to 250 V DC (1P), 800 V DC (2P and 3P), and 1200 V DC (4P). Its dedicated arc-extinguishing and current-limiting systems quickly interrupt DC fault currents, protecting critical components and ensuring reliable operation of the PV system.

Product Operating and Installation Conditions

Altitude: ≤ 2000 m; for higher elevations, consult the manufacturer.

Ambient temperature: −25 °C to +40 °C, with a 24-hour average not exceeding +35 °C; outside this range, please consult the manufacturer.

Installation: Mount the device in a waterproof distribution enclosure.

Product Details

Rated insulation voltage ( UI )	1250V
Rated operating voltage ( UE )	DC ( IP ) : 15V , 60V , 100V , 180V , 250V ; DC ( 2P ) : 125V , 375V, 550V ,600V , 800V DC(3P) : 750V , 800V ; DC ( 4P ) : 800V ,1000V, 1200V
Rated current of frame	63A
Different currents of the same shell frame	6A,10A,16A,20A,25A,32A,40A,50A,63A
Rated operating short-circuit breaking capacity ( ICS = ICU )	6KA
Rated operating short-circuit breaking capacity ( ICS = ICU )	2P 800V \ 4p 1200V 2KA
Mechanical life	20000second
Electrical life	10000second ( Belowdc125V/ 1P , Below DC250V / 2P ) ,1000second ( Other voltage specifications )
Certificate	CB CE CCC
Rated impulse withstand voltage Uimp	6KA
Tripping characteristics / tripping type	B / C ; Thermal porcelain
Overvoltage level	Ⅲ
class of pollution	3
Protection grade	IP40 ; Connection port IP20
Damp heat resistance	Class 2
Relative humidity	≤95%
Standard	IEC 60947-2 GB / T 14048.2
Seismic resistance	Basis IEC 60068-2-6
Mechanical shock resistance parameters	Basis LEC 60068-2-27
Operating ambient temperature	-30℃~70℃
Damp heat resistance	Db Class ( Temperature 55℃ 6 Cycle )
Storage environment temperature	-30℃~70℃
Altitude	≤2000m
Weight	0.12kg/p
enclosure	OF / SD / MX / MN / MX + OF
MX control voltage Us	DC : 12V , 24V ,220V ; AC : 110V , 220V , 380V It is recommended that the power supply should not be lower than 75W
Mn rated voltage UN	AC220V AC380V