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189 - E-Rated Fuse 34.5kV 200A

United Fuses
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The 189 is a high-voltage fuse designed for primary protection of power distribution systems, safeguarding transformers and circuits from overcurrents and short circuits. It is rated for voltages up to 34.5 kV AC and current ratings from 1 to 200 amps, with an interrupting capacity of up to 50 kA symmetrical. This fuse features a solid-state construction with a silver-element design, housed in a durable ceramic body with ferrule end connections, and operates within a temperature range of -40°C to 85°C. It complies with ANSI C37.46 and IEEE C37.41 standards, ensuring reliable performance in utility and industrial applications. Typical uses include protection of pad-mounted transformers, underground distribution systems, and capacitor banks in electrical substations.

Key Features & Specifications
  • Type: High-voltage current-limiting fuse, silver-element, ceramic body
  • Voltage Rating: 34.5 kV AC
  • Current Rating: 1 to 200 A
  • Interrupting Rating: 50 kA symmetrical
  • Dimensions: 10.5 in length, 2.5 in diameter
  • Standards: ANSI C37.46, IEEE C37.41
  • Applications: Transformer, capacitor bank, and underground distribution protection
  • Switch Type: N/A
  • Configuration: Single-pole
  • Coil Voltage Maximum: N/A
  • Temp Rating: -40°C to 85°C
  • Shipping Dimensions: 12 x 3 x 3 in
  • Phase: Single-phase
  • Voltage: 34.5 kV
  • Amperage: 1 to 200 A
  • AIC rating: 50 kA
  • Connection: Ferrule
  • Poles: 1
  • Protection: Overcurrent, short circuit
  • Functions: Current limiting
  • Frame Size: N/A
  • Trip Type: N/A
  • Panel Type: N/A
  • Breaker Type: N/A
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: N/A
  • Metal Type: Silver
  • Panel Style: N/A
  • Bus Type: N/A
  • Fuse Class: E
  • Insulation Temperature: 85°C
  • Inductance: N/A
  • Impedance: N/A
  • Barrels: N/A
  • Class Rating: E
  • Diameter: 2.5 in
  • Velocity: N/A
  • Clip Center: N/A
  • Clas: E
  • Mounting: Ferrule
  • Hz: 50/60
  • Coil Material: N/A
  • Horse Power: N/A
  • Aux Contacts: N/A
  • CPT: N/A
  • Full Load Amps: 1 to 200 A
  • Dist Voltage: 34.5 kV
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: 200 A
  • Full Load Amp Minimum: 1 A
  • Enclosure: N/A
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: N/A
  • Amperage Maximum: 200 A
  • Amperage Minimum: 1 A
  • Nema Rating: N/A
  • Switch Style: N/A
  • Wire Size: N/A
  • Certification: ANSI, IEEE
  • Circuit Breaker Mounting Style: N/A
  • Terminal Connection: Ferrule
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single-phase
  • Standards: ANSI C37.46, IEEE C37.41
  • Compatible Frames: N/A
  • Installation Type: Panel or cutout
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: N/A
  • Current Rating: 1 to 200 A
  • Reverse Standoff Voltage: N/A
  • Watts: N/A
  • Peak Pulse Current: N/A
  • Breakdown Voltage (MIN VBR@IT ) (V): N/A
  • Breakdown Voltage (VBR@IT) (V): N/A
  • Polarity: N/A
  • Operating Temperature Maximum Celsius: 85°C
  • Max Clamp Voltage: N/A
  • On-State Current: N/A


Product Identification
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