VOB3-63DC DC Miniature Circuit Breaker
The VIOX VOB3-63DC DC miniature circuit breaker is designed for reliable overload and short-circuit protection in DC electrical systems. It features a polarity-free design, up to DC1000V rated voltage, 10kA breaking capacity, and 1P to 4P configurations for flexible installation.
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The VIOX VOB3-63DC DC miniature circuit breaker is engineered for dependable overload and short-circuit protection in DC power systems. Designed with a polarity-free structure, this series supports flexible wiring installation and delivers rated voltage up to DC1000V in 4P configuration.
With rated currents from 1A to 63A, 10kA breaking capacity, and 1P, 2P, 3P, and 4P options, the VOB3-63DC series is suitable for solar PV, energy storage, communication systems, and other low-voltage DC applications where safety, consistency, and compact DIN rail mounting are important.
Key Features
- Polarity-free design for flexible DC wiring
- Rated voltage up to DC1000V
- Rated current range from 1A to 63A
- Ultimate short-circuit breaking capacity up to 10kA
- Available in 1P, 2P, 3P, and 4P configurations
- B, C, and D tripping curves available
- Contact position indicator for clear operating status
- Compact stacked rail installation for convenient mounting
Technical Specifications
| Standards | GB/T 14048.2, IEC 60947-2 |
|---|---|
| Number of Poles | 1P, 2P, 3P, 4P |
| Rated Current (In) | 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A |
| Rated Frame Current | 63A |
| 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) |
| Instantaneous Tripping Curve | B (4In-7In), C (8In-12In), D (12In-20In) |
| Overload Tripping (1.05In) | Agreed non-tripping time 1h (cold state) |
| Overload Tripping (1.30In) | Agreed tripping time 1h (hot state) |
| Mechanical Life | 20,000 cycles |
| Electrical Life | 1,000 cycles |
| Protection Grade | IP20 |
| Reference Temperature | 30°C |
| Energy Limiting Class | Class 3 |
| Unipolar Width | 18mm per pole |
| Wiring Capacity | 16 mm² |
| Connection Method | Both upper and lower incoming lines are acceptable |
Pole And Voltage Options
| Poles | Rated Voltage | Typical Use |
|---|---|---|
| 1P | DC 250V | Compact DC branch protection |
| 2P | DC 500V | General DC isolation and protection |
| 3P | DC 750V | Higher-voltage DC system applications |
| 4P | DC 1000V | Solar PV and advanced DC distribution systems |
Applications
The VOB3-63DC series is suitable for DC electrical systems that require compact circuit protection, stable performance, and convenient DIN rail installation. It is especially useful in applications where high system voltage and flexible polarity-free wiring are required.
- Solar PV systems
- Energy storage systems
- Telecom power systems
- DC distribution cabinets
- Industrial DC control systems
- Battery and charging protection circuits
Why Choose VIOX VOB3-63DC
The VOB3-63DC gives B2B buyers a practical DC protection solution with broad current coverage, multiple pole options, and a polarity-free connection design that simplifies installation planning. It is built for distributors, panel builders, OEMs, and project buyers who need reliable DC circuit protection for modern electrical systems.
- Wide current range for flexible project selection
- Up to DC1000V for higher-voltage DC applications
- 10kA breaking capacity for dependable protection
- Multiple tripping curve options for application matching
- Compact modular design for panel efficiency
- Suitable for OEM, distribution, and project procurement
FAQ
What is the VOB3-63DC used for?
It is used for overload and short-circuit protection in DC electrical systems such as solar, battery, telecom, and industrial DC distribution applications.
What is the maximum rated voltage of the VOB3-63DC?
The series supports up to DC1000V in the 4P configuration.
What current range is available?
The product range covers rated currents from 1A to 63A.
Is this DC breaker polarity sensitive?
No. The source material describes the VOB3-63DC as a polarity-free design, allowing both upper and lower incoming lines.
What breaking capacity is available?
The series is listed with 10kA ultimate short-circuit breaking capacity, with 6kA optional.
Request a Quote
If you are sourcing DC miniature circuit breakers for solar, energy storage, or industrial DC projects, VIOX can help you select the right VOB3-63DC model based on pole configuration, rated current, and system voltage. Send your specifications and quantity requirements for quotation support.
