VOZWEI-VB2-MCB-Catalog.pdf
Product Catalog · 1.41 MB
VB2-63 Series 4P Miniature Circuit Breaker (MCB)
The VB2-63 Series is a miniature circuit breaker (MCB) for low-voltage circuit protection, available in 1P to 4P configurations with rated current from 1A to 63A. It supports 230/400VAC and 48/60VDC (1P/2P) operation, with a rated impulse withstand voltage of 6kV and Icn up to 10kA.
Highlights
- Icn up to 10kA for circuit protection
- Rated impulse withstand voltage up to 6.0kV
- Fast contact closing for extended electrical life
- Dual tunnel and busbar terminals for flexible wiring
- Detachable phase separators for flexible insulation configuration
Product Information
- Rated current (In): 1A, 2A, 3A, 4A, 6A, 8A, 10A, 13A, 16A, 20A, 25A, 32A, 35A, 40A, 50A, 63A
- Rated operational voltage (Ue): AC230/400V (50/60Hz)
- Rated insulation voltage (Ui): 690V
- Rated impulse withstand voltage (Uimp): 6.0kV
- Number of poles: 4P
- Environmental Tolerance: High voltage resistance up to Uimp 6.0kV
- Standard Compliance: IEC 60898-1
- Wiring & Mounting: Tunnel and busbar terminal options (1.0–25mm² capacity)
- Quick-closing mechanism ensures reliable operation and extends contact service life
- Low internal temperature-rise design for superior energy efficiency and thermal safety
- Supports high impulse withstand voltage up to 6.0kV against grid surge impacts
- Dual tunnel and busbar terminal design enables fast, secure, and flexible wiring
- Modular structure allows effortless combination and versatile installation options
| Rated Current | 1A, 2A, 3A, 4A, 6A, 8A, 10A, 13A, 16A, 20A, 25A, 32A, 35A, 40A, 50A, 63A |
| Rated Operational Voltage (Ue) | 230/400 VAC |
| Rated insulation voltage (Ui) | 690 V |
| Rated Impulse Withstand Voltage (Uimp) | 6.0 kV |
| Number of Poles | 4P |
| Rated Frequency | 50/60 Hz |
| Operating performance (Mechanical Endurance) | 15000 Cycle |
| Operating performance (Electrical Endurance) | 10000 Cycle |
| Standard | IEC 60898-1 |
| Terminal Type | Tunnel type, Bus-bar |
| Connecting Capacity | 1.0 mm²…25 mm² |
| Tightening Torque | 2.5 N·m |
| File name | Type | Size | Actions |
|---|---|---|---|
| VOZWEI-VB2-MCB-Catalog.pdf | Product Catalog | 1.41 MB |
Q: What are the rated voltage and current ranges for the VB2-63 series 4P MCB?
A: The VB2-63 series 4P MCB supports a rated operational voltage of AC230/400V (50/60Hz) and covers a full current range from 1A to 63A (1A, 2A, 3A, 4A, 6A, 8A, 10A, 13A, 16A, 20A, 25A, 32A, 35A, 40A, 50A, and 63A).
Q: Why is a 4P MCB used in three-phase electrical systems?
A: The VB2-63 series 4P MCB provides simultaneous protection and isolation for all three phase lines (L1, L2, L3) and the neutral line (N), making it essential for three-phase four-wire AC systems where complete isolation of the neutral conductor is required for safety and maintenance.
Q: What impulse withstand voltage capability does the VB2-63 series 4P MCB offer?
A: The VB2-63 series 4P MCB features a high rated impulse withstand voltage (Uimp) of 6.0kV and a rated insulation voltage (Ui) of 690V, protecting four-pole distribution networks against strong grid surge voltages.
Q: What standard does the VB2-63 series 4P MCB comply with?
A: The VB2-63 series 4P MCB is designed, manufactured, and tested in full compliance with the IEC 60898-1 international standard for low-voltage AC circuit breakers.
Q: How does the quick-closing mechanism benefit the VB2-63 series 4P MCB?
A: The quick-closing mechanism ensures rapid contact closure independent of manual operation speed, reducing arcing time across all four poles and significantly extending the electrical life of the circuit breaker.
Q: What terminal wiring options does the VB2-63 series 4P MCB support?
A: The VB2-63 series 4P MCB supports dual tunnel type and busbar type wiring configurations, accommodating conductor sizes from 1.0mm² to 25mm² for fast and secure terminal connections.
Q: How does the design of the VB2-63 4P MCB optimize thermal performance?
A: Built with a low internal temperature-rise design, the VB2-63 series 4P MCB minimizes thermal loss and heat buildup during continuous full-load four-pole operations, enhancing overall distribution enclosure safety.
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