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UNF405SA - Semiconductor Fuse 500V 400A (High-Speed Protection)

United Fuses
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The UNF405SA is a high-speed industrial fuse designed for the protection of semiconductor devices and power conversion equipment. This fuse is rated for 500V AC/DC and carries a nominal current of 400A, providing robust overcurrent protection in demanding environments. Constructed with a durable ceramic body and silver-plated blade terminals, it offers excellent thermal stability and low power dissipation. The UNF405SA complies with UL 248-13 and IEC 60269-4 standards for semiconductor fuse performance. It is commonly employed in variable frequency drives, uninterruptible power supplies, and DC power systems.

Key Features & Specifications
  • Type: High-speed semiconductor protection fuse, ceramic body, silver-plated terminals
  • Voltage Rating: 500V AC/DC
  • Current Rating: 400A
  • Dimensions: Not specified
  • Standards: UL 248-13, IEC 60269-4
  • Applications: Variable frequency drives, UPS systems, DC power systems
  • Switch Type: Not applicable
  • Configuration: Not specified
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: Not specified
  • Voltage: 500V
  • Amperage: 400A
  • AIC rating: Not specified
  • Connection: Blade terminals
  • Poles: 1
  • Protection: Overcurrent
  • Functions: Semiconductor protection
  • Frame Size: Not specified
  • Trip Type: High-speed
  • Panel Type: Not applicable
  • Breaker Type: Not applicable
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Silver-plated
  • Panel Style: Not applicable
  • Bus Type: Not applicable
  • Fuse Class: Not specified
  • Insulation Temperature: Not specified
  • Inductance: Not applicable
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not applicable
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Bolt-on
  • Hz: Not specified
  • Coil Material: Not applicable
  • Horse Power: Not applicable
  • Aux Contacts: Not applicable
  • CPT: Not applicable
  • Full Load Amps: Not applicable
  • Dist Voltage: Not applicable
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: Not applicable
  • Full Load Amp Minimum: Not applicable
  • Enclosure: Not applicable
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not applicable
  • Amperage Maximum: 400A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not applicable
  • Wire Size: Not specified
  • Certification: UL, IEC
  • Circuit Breaker Mounting Style: Not applicable
  • Terminal Connection: Blade
  • Frequency Rating: Not specified
  • Phase Connection: Not applicable
  • Standards: UL 248-13, IEC 60269-4
  • Compatible Frames: Not specified
  • Installation Type: Bolt-on
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not applicable
  • Current Rating: 400A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


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