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ZB12-10 - Vacuum Circuit Breaker 12kV 630A (25kA)

United Fuses
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ZB12-10 is a high-voltage vacuum circuit breaker designed for primary protection in medium-voltage power distribution systems. It is rated for 12 kV AC and 630 A continuous current, with a breaking capacity of up to 25 kA. The unit weighs 5.19 lb and features a compact, modular construction with a vacuum interrupter housed in a robust metal enclosure. It complies with IEC 62271-100 and GB 1984 standards for safety and performance. Typical applications include industrial plants, substations, and commercial buildings requiring reliable overcurrent and short-circuit protection.

Key Features & Specifications
  • Type: High-voltage vacuum circuit breaker, fixed or withdrawable
  • Voltage Rating: 12 kV AC
  • Current Rating: 630 A
  • Weight: 5.19 lb
  • Standards: IEC 62271-100, GB 1984
  • Applications: Industrial plants, substations, commercial buildings
  • Switch Type: Vacuum interrupter
  • Configuration: Fixed or withdrawable
  • Coil Voltage Maximum: Not specified
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3-phase
  • Voltage: 12 kV
  • Amperage: 630 A
  • AIC rating: 25 kA
  • Connection: Not specified
  • Poles: 3
  • Protection: Overcurrent, short-circuit
  • Functions: Switching, isolation
  • Frame Size: Not specified
  • Trip Type: Not specified
  • Panel Type: Not specified
  • Breaker Type: Vacuum
  • Control Voltage Minimum: Not specified
  • Control Voltage Maximum: Not specified
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not specified
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Not specified
  • Hz: 50/60 Hz
  • Coil Material: Not specified
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Metal
  • Relay Style: Not specified
  • Coil Voltage Minimum: Not specified
  • Wire: Not specified
  • Amperage Maximum: 630 A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: IEC, GB
  • Circuit Breaker Mounting Style: Fixed or withdrawable
  • Terminal Connection: Not specified
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: IEC 62271-100, GB 1984
  • Compatible Frames: Not specified
  • Installation Type: Indoor
  • Item QTY: 1
  • Nema Starter Size: Not specified
  • Breaker Frame: Not specified
  • Current Rating: 630 A
  • Reverse Standoff Voltage: Not specified
  • Watts: Not specified
  • Peak Pulse Current: Not specified
  • Breakdown Voltage (MIN VBR@IT ) (V): Not specified
  • Breakdown Voltage (VBR@IT) (V): Not specified
  • Polarity: Not specified
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified


Product Identification
  • UPC: Not specified
  • GTIN: Not specified