01
Solar PV DC protection
High-current overload and short-circuit protection for photovoltaic combiner, inverter-side and DC distribution circuits.
VOB2 Series
VOB2-125DC 1000V DC Circuit Breaker
Polarity-free high-current overload and short-circuit protection for solar PV, energy storage and industrial DC circuits up to 1000V DC and 125A.
GB/T 14048.2, IEC 60947-2Standards
1P, 2P, 3P, 4PNumber of Poles
32, 40, 50, 63, 80, 100, 125ARated Current (In)
DC 250V (1P), DC 500V (2P), DC 750V (3P), DC 1000V (4P)Rated Voltage (Ue)
01 / PRODUCT VIEWThe VOB2-125DC series miniature DC circuit breaker supports rated currents up to 125A, 1P to 4P configurations and rated operational voltage up to 1000V DC. Its polarity-free design accepts upper or lower incoming lines, while the contact-position indicator supports clear operating-state checks. Designed for high-current overload and short-circuit protection in DC systems, it complies with GB/T 14048.2 and IEC 60947-2.
02 / TECHNICAL DATA
Ratings and dimensions for VOB2-125DC selection.
Use the published ratings to select pole count, voltage, current, tripping curve and breaking capacity. Confirm the project fault level and final order code against the controlled datasheet and approved quotation.
Core specifications
StandardsGB/T 14048.2, IEC 60947-2
Number of Poles1P, 2P, 3P, 4P
Rated Current (In)32, 40, 50, 63, 80, 100, 125A
Rated Voltage (Ue)DC 250V (1P), DC 500V (2P), DC 750V (3P), DC 1000V (4P)
Rated Frame Current125A
Rated Insulation Voltage (Ui)1000V
Rated Impulse Withstand Voltage (Uimp)6kV
Ultimate Short-circuit Breaking Capacity (Icu)10kA (6kA optional)
Operating Short-circuit Breaking Capacity (Ics)7.5kA
Usage CategoryA
Dimension reference
Build the VOB2-125DC RFQ configuration.
04 / APPLICATIONS
Where VOB2-125DC fits.
02
Battery energy storage
Polarity-free protection for battery energy-storage branch and distribution circuits up to 125A.
03
Industrial DC distribution
DIN-rail circuit protection for industrial DC systems requiring current ratings from 32A to 125A.
05 / RESOURCES
Controlled documents and direct answers.
Request the latest controlled documents for your selected VOB2-125DC configuration.
What is the maximum voltage of VOB2-125DC?
The maximum rated operational voltage is DC 1000V with the 4P configuration. The published combinations are DC 250V for 1P, DC 500V for 2P, DC 750V for 3P and DC 1000V for 4P.
Is VOB2-125DC polarity sensitive?
No. VOB2-125DC uses a DC polarity-free design, and both upper and lower incoming-line arrangements are acceptable.
Which rated currents are available?
Published rated-current options are 32, 40, 50, 63, 80, 100 and 125A.
What is the breaking capacity?
The published ultimate short-circuit breaking capacity (Icu) is 10kA, with 6kA available as an option. The operating short-circuit breaking capacity (Ics) is 7.5kA. Confirm the required capacity against the project fault level.
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