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VTR714

The ABB VTR714 is a high-power, liquid-cooled, air-insulated medium-voltage (MV) vacuum circuit breaker (VCB). It is a core component within ABB's range of UniGear switchgear assemblies, specifically designed for primary power distribution in demanding industrial and utility applications. This breaker is engineered to safely make, carry, and interrupt high electrical currents under both normal and fault conditions within a metal-clad switchgear enclosure.

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Parameters Category Parameter Typical Specification / Interpretation for VTR714 General Type Truck-Mounted, Air-Insulated, Vacuum Circuit Breaker Mounting Withdrawable, for UniGear ZS1 or similar metal-clad switchgear. Rated Values Rated Voltage (Ur) 7.2 kV, 12 kV, or 15 kV (System dependent). Rated Frequency 50 Hz / 60 Hz Rated Normal Current (Ir) Likely in the range of 1250A, 1600A, 2000A, 2500A, or 3150A. ("714" may indicate a 2000A or 2500A frame). Rated Short-Time Withstand Current (Ik) 25 kA or 31.5 kA for 3 seconds (Typical). Breaking Capacity Rated Short-Circuit Breaking Current (Isc) 25 kA or 31.5 kA (Symmetrical RMS). Rated Making Current 2.5 x Isc (Peak) Interrupting Medium Arc Extinction Medium High Vacuum Number of Interrupters per Pole 1 Mechanical Operating Mechanism Spring-operated stored energy mechanism. Motor-charged, with manual charging option. Closing Time ~60 - 100 ms Opening Time ~30 - 60 ms (Including relay time). Mechanical Endurance 10,000 - 20,000 operations Control & Auxiliary Rated Control Supply Voltage AC/DC: 110V, 125V, 220V, 250V (Order specific). Auxiliary Contacts Multiple NO/NC contacts for signaling and interlocking. Physical Cooling (for high-current variants) Natural convection (air) or forced liquid cooling for terminals/bushings. Weight Approx. 250 - 400 kg (Highly dependent on current rating). Standards Compliance IEC 62271-100, IEC 62271-1, ANSI/IEEE C37.04, C37.06.