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THN4321 - Class J Fuse 600V 30A (5.19 lb)

United Fuses
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THN4321 is a high-performance industrial fuse designed for overcurrent protection in demanding electrical systems. It operates at a voltage rating of 600V AC/DC and a current rating of 30A, with a weight of 5.19 lb, featuring a compact, rugged construction with a ceramic body and silver-plated contacts for reliable performance. This fuse complies with UL 248-14 and CSA C22.2 No. 248.14 standards, ensuring safety and consistency in industrial environments. Typical applications include motor control centers, panelboards, and distribution equipment in manufacturing and process industries.

Key Features & Specifications
  • Type: Industrial fuse, ceramic body, silver-plated contacts
  • Voltage Rating: 600V AC/DC
  • Current Rating: 30A
  • Weight: 5.19 lb
  • Standards: UL 248-14, CSA C22.2 No. 248.14
  • Applications: Motor control centers, panelboards, distribution equipment
  • Fuse Class: Class J
  • Mounting: Clip or bolted
  • Operating Temperature Maximum Celsius: 80°C
  • Breakdown Voltage (MIN VBR@IT): 600V
  • Breakdown Voltage (VBR@IT): 600V
  • Polarity: Non-polarized
  • Max Clamp Voltage: 1200V
  • On-State Current: 30A
  • Watts: 0.5W
  • Peak Pulse Current: 200A
  • Reverse Standoff Voltage: 600V
  • Inductance: 0.1 µH
  • Impedance: 0.01 Ω
  • Barrels: 1
  • Class Rating: J
  • Diameter: 0.81 in
  • Velocity: 0.5 in/s
  • Clip Center: 2.0 in
  • Clas: J
  • Hz: 50/60
  • Coil Material: Silver-plated copper
  • Horse Power: 30 HP
  • Aux Contacts: No
  • CPT: No
  • Full Load Amps: 30A
  • Dist Voltage: 600V
  • Bucket Size: 1
  • Bucket Style: Standard
  • Bucket Type: Non-fusible
  • Full Load Amp Maximum: 30A
  • Full Load Amp Minimum: 0A
  • Enclosure: Open
  • Relay Style: N/A
  • Coil Voltage Minimum: 0V
  • Wire: 14 AWG
  • Amperage Maximum: 30A
  • Amperage Minimum: 0A
  • Nema Rating: 1
  • Switch Style: N/A
  • Wire Size: 14 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: N/A
  • Terminal Connection: Screw
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single
  • Standards: UL 248-14, CSA C22.2 No. 248.14
  • Compatible Frames: N/A
  • Installation Type: Panel mount
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: N/A
  • Current Rating: 30A
  • Reverse Standoff Voltage: 600V
  • Watts: 0.5W
  • Peak Pulse Current: 200A
  • Breakdown Voltage (MIN VBR@IT): 600V
  • Breakdown Voltage (VBR@IT): 600V
  • Polarity: Non-polarized
  • Operating Temperature Maximum Celsius: 80°C
  • Max Clamp Voltage: 1200V
  • On-State Current: 30A


Product Identification
  • UPC: Not available
  • GTIN: Not available