Keeping your grid reliable has never been more important. With the power usage patterns shifting dramatically in these challenging times, power operators need to do make everything they can to avoid outages.
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.
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.
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.
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.
Q: Which VOZWEI MCB series are available?
A: The VOZWEI VB2-63 MCB series offers 1P, 2P, 3P and 4P versions with In from 1A to 63A in 16 steps. The line carries Icn 10kA, Ui 690V and Uimp 6.0kV under IEC 60898-1; the 1P/2P models are rated AC230/400V plus DC48/60V, 3P/4P AC230/400V only.
Q: What pole configurations does the VOZWEI VB2-63 MCB support?
A: The VOZWEI VB2-63 MCB differs by pole count and rated voltage. The 1P and 2P models are rated AC230/400V plus DC48/60V; the 3P and 4P models are AC230/400V only. All four share Ui 690V, Uimp 6.0kV and Icn 10kA under IEC 60898-1.
Q: What terminal options does the VOZWEI VB2-63 MCB offer?
A: The VOZWEI VB2-63 MCB offers tunnel terminals and busbar terminals on the same model, both accepting conductors from 1.0mm² to 25mm². Tunnel terminals suit standard cable wiring; busbar terminals enable fast connection to standard busbars.
Q: How do I select VOZWEI VB2-63 rating and poles?
A: The VOZWEI VB2-63 MCB covers In 1A–63A in 16 steps with Icn 10kA under IEC 60898-1. Size In to the continuous load current while keeping conductor ampacity within the rated range; pick 1P or 2P for AC230/400V, where 2P also covers DC48/60V, and 3P or 4P for three-phase AC230/400V only.
Q: Which VOZWEI VB2-63 MCB suits DC48/60V circuits?
A: The VOZWEI VB2-63 1P and 2P versions are the only MCBs in the series rated DC48/60V, and also cover AC230/400V. The 3P and 4P versions are AC230/400V only and must not be applied to DC circuits.
Q: What do Icn and Uimp mean on VOZWEI VB2-63?
A: The VOZWEI VB2-63 MCB rates Icn at 10kA short-circuit capacity and Uimp at 6.0kV impulse withstand voltage, with Ui 690V. The 6.0kV impulse withstand helps it resist grid surge impacts; fitting the detachable phase isolation pieces enlarges clearance and creepage distance.
Q: Which applications suit the VOZWEI VB2-63 MCB?
A: The VOZWEI VB2-63 MCB targets terminal distribution protection up to In 63A. The 1P and 2P versions cover DC48/60V circuits in telecom and energy storage, while all four versions serve AC230/400V final circuits with Icn 10kA.
Q: When should I choose VOZWEI VB2-63 over a VOZWEI MCCB?
A: Choose the VOZWEI VB2-63 MCB for final circuits up to In 63A within Icn 10kA; step up to a VOZWEI MCCB above that. VOZWEI VM5-320HUM and VM5-630HUM MCCBs reach 320A or 630A with Icu 50kA at AC800V and also support AC1000V systems.