VOB2-125DC DC Miniature Circuit Breaker
The VIOX VOB2-125DC DC miniature circuit breaker is designed for high-current DC protection applications. It features a polarity-free design, supports up to DC1000V, and provides overload and short-circuit protection in 1P to 4P configurations.
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The VIOX VOB2-125DC DC miniature circuit breaker is designed for high-current DC electrical systems that require dependable overload and short-circuit protection. With a polarity-free structure, this series supports flexible installation and accepts both upper and lower incoming lines for easier panel wiring and integration.
The VOB2-125DC range covers rated currents from 32A to 125A and supports 1P, 2P, 3P, and 4P configurations. With rated voltage up to DC1000V, it is suitable for solar PV, energy storage, industrial DC distribution, and other demanding DC applications where higher current capacity and compact DIN rail installation are important.
Key Features
- Polarity-free DC design for flexible wiring
- Rated current up to 125A
- Rated voltage up to DC1000V
- Available in 1P, 2P, 3P, and 4P versions
- 10kA ultimate short-circuit breaking capacity
- Contact position indicator window for clear status checking
- Complies with GB/T 14048.2 and IEC 60947-2
- Meets EU standard energy level 3 requirements according to the source image
Technical Specifications
| Compliant Standards | GB/T 14048.2, IEC 60947-2 |
|---|---|
| Number of Poles | 1P, 2P, 3P, 4P |
| Rated Current (In) | 32A, 40A, 50A, 63A, 80A, 100A, 125A |
| Rated Frame Current | 125A |
| Rated Voltage (Ue) | DC 250V (1P), DC 500V (2P), DC 750V (3P), DC 1000V (4P) |
| 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 Category | A |
| Instantaneous Tripping Curve | B (4In-7In), C (8In±20%), D (12In±20%) |
| Overload Tripping (In ≤ 63A) | 1.05In (1h non-tripping) / 1.30In (1h tripping) |
| Overload Tripping (In > 63A) | 1.05In (2h non-tripping) / 1.30In (2h tripping) |
| Mechanical Life | 20,000 cycles |
| Electrical Lifespan | ≥1,500 cycles |
| Protection Grade | IP20 |
| Reference Temperature | 30°C |
| Unipolar Width | 27mm per pole |
| Wiring Capacity | 50 mm² |
| Connection Method | Both upper and lower incoming lines are acceptable |
Pole And Voltage Configurations
| Poles | Rated Voltage | Application Fit |
|---|---|---|
| 1P | DC 250V | Single-pole DC branch protection |
| 2P | DC 500V | General DC isolation and distribution |
| 3P | DC 750V | Higher-voltage DC systems |
| 4P | DC 1000V | Solar PV and energy storage DC protection |
Applications
The VOB2-125DC series is suitable for DC applications that need higher current handling together with compact and standardized installation. It is a practical choice for projects where stable protection performance, panel efficiency, and flexible polarity-free wiring are required.
- Solar photovoltaic systems
- Energy storage systems
- Battery protection circuits
- Industrial DC distribution panels
- Telecom DC power systems
- OEM electrical cabinets and assemblies
Why Choose VIOX VOB2-125DC
The VOB2-125DC gives B2B buyers a high-current DC miniature circuit breaker with practical voltage coverage, compact modular sizing, and reliable protection characteristics. It is designed for distributors, panel builders, OEMs, and project buyers who need a clear and scalable DC breaker solution.
- High current range from 32A to 125A
- Supports up to DC1000V systems
- 10kA breaking capacity for dependable protection
- Polarity-free installation for easier wiring design
- Suitable for standardized DIN rail panel integration
- Useful for OEM, project, and distribution sourcing
FAQ
What is the VOB2-125DC used for?
It is used for overload and short-circuit protection in higher-current DC systems such as solar, energy storage, telecom, and industrial DC distribution applications.
What is the maximum rated voltage of the VOB2-125DC?
The maximum rated working voltage shown in the product data is DC1000V in the 4P configuration.
What current range is available?
The product range covers 32A, 40A, 50A, 63A, 80A, 100A, and 125A.
Is the VOB2-125DC polarity sensitive?
No. The product is described as DC polarity-free, and both upper and lower incoming lines are acceptable.
What wiring capacity does this breaker support?
The source image lists a wiring capacity of 50 mm².
Request a Quote
If you are sourcing high-current DC miniature circuit breakers for solar, energy storage, telecom, or industrial DC projects, VIOX can help you select the right VOB2-125DC model based on current rating, pole configuration, and system voltage. Send your specifications and quantity requirements for quotation support.
