01
Solar PV DC protection
Protect photovoltaic strings, combiner-box outgoing circuits and inverter-side DC distribution against overload and short-circuit faults.
VOB3 Series
VOB3-63DC 1000V DC Circuit Breaker
Overload and short-circuit protection for photovoltaic, energy-storage and industrial DC distribution circuits.
GB/T 14048.2, IEC 60947-2Standards
1P, 2P, 3P, 4PNumber of Poles
1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63ARated Current (In)
DC 250V (1P), DC 500V (2P), DC 750V (3P), DC 1000V (4P)Rated Voltage (Ue)
01 / PRODUCT VIEWThe VOB3-63DC series miniature DC circuit breaker (up to 63A rated current and 10kA breaking capacity) features an innovative polarity-free design capable of handling maximum voltages up to DC1000V, offering 1P to 4P configurations and B/C/D tripping curves. Compliant with GB/T and IEC standards, it integrates a contact position indicator and a convenient stacked rail installation to provide highly reliable short-circuit and overload protection for DC electrical systems.
02 / TECHNICAL DATA
Specifications and product references on one working surface.
Use these values for initial selection. The controlled datasheet and approved quotation define the supplied product.
Core specifications
StandardsGB/T 14048.2, IEC 60947-2
Number of Poles1P, 2P, 3P, 4P
Rated Current (In)1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63A
Rated Voltage (Ue)DC 250V (1P), DC 500V (2P), DC 750V (3P), DC 1000V (4P)
Rated Frame Current63A
Rated Insulation Voltage (Ui)1000V
Rated Impulse Withstand Voltage (Uimp)6kV
Ultimate Short-circuit Breaking Capacity (Icu)10kA (6kA Optional)
Usage CategoryA
Tripping Curve (Instantaneous)B (4In-7In), C (8In±20%), D (12In±20%)
Dimension reference
Build the VOB3-63DC RFQ configuration.
04 / APPLICATIONS
Where VOB3-63DC fits.
02
Battery energy storage systems
Provide compact overcurrent protection and manual isolation in lower-current battery and supporting DC distribution circuits.
03
Industrial DC distribution
Support control panels, DC auxiliary supplies and industrial equipment where polarity-free incoming connection simplifies installation.
05 / RESOURCES
Controlled documents and direct answers.
Download available files or request the latest controlled documents.
What is the maximum voltage of VOB3-63DC?
The maximum rated operational voltage is 1000 V DC in the 4P configuration. The corresponding limits are 250 V DC for 1P, 500 V DC for 2P and 750 V DC for 3P.
Is VOB3-63DC polarity sensitive?
No. VOB3-63DC uses a polarity-free connection design, so both upper and lower incoming connections are acceptable when the installation follows the approved wiring requirements.
Which rated currents are available?
The available rated-current references are 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50 and 63 A.
What is the breaking capacity?
The listed ultimate short-circuit breaking capacity is 10 kA, with a 6 kA version available as an option. Confirm the project fault level before selection.
READY FOR SELECTION?