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MARATHON/KULKA 6J400A3BFBD Class J Fuse Holder

The Marathon/Kulka 6J400A3BFBD is a robust Class J fuse holder engineered for demanding industrial applications. It features a phenolic laminate insulator base with a UL94 HB flammability rating and an operating temperature range of -35°C to 120°C. The fuse clip is constructed from tin-plated aluminum alloy, while terminal set screws and hardware utilize tin-plated aluminum and zinc-plated steel respectively. This fuse holder is approved for a 200,000 Amp Withstand Rating and is suitable for use with Class J fuses 201-400 Amps, accommodating wire ranges from 350 kcmil to #2 AWG. It is UL Listed and RoHS compliant, making it a reliable and environmentally responsible choice for various electrical systems.

Authorized Distributors
Part No:6J400A3BFBD
Stock:1
Inv Date:06-01-2026
Price: Unit price: $950.5
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Part No:6J400A3BFBD
Stock:5
Inv Date:06-01-2026
Price: Unit price: $1758.73
Buy/RFQ:
Part No:6J400A3BFBD
Stock:5
Inv Date:06-01-2026
Price: Unit price: $1758.73
Buy/RFQ:
Part No:6J400A3BFBD
Stock:0
Inv Date:06-01-2026
Price: Unit price: $1131
Buy/RFQ:

MARATHON/KULKA 6J400A3BFBD Class J Fuse Holder Specifications:

  • wire_range: 350 kcmil - #6 AWG, 600 kcmil - #2 AWG, 400 kcmil - #2 AWG (CU STR G, H, I)
  • max_amperage: 400A
  • voltage_rating: 600 Volts AC
  • withstand_rating: 200,000 Amp
  • fuse_compatibility: Class J fuses 201 - 400 Amps
  • ul_listing: UL Listed, File E35113 (IZLT / IZLT7)
  • agency_compliance: CSA 22.2 No 4248.1 - 07
  • insulator_base_material: Phenolic Laminate
  • insulator_base_flammability: UL94 HB
  • insulator_base_temp_rating: -35°C to 120°C (UL RTI)
  • fuse_clip_material: Aluminum alloy, tin plated
  • terminal_set_screw_material: Aluminum, tin plated
  • hardware_material: Steel, zinc plated
  • torque_line_load_side_350kcmil_6awg: 31.1 N.m (275 in. lbs)
  • torque_line_load_side_600kcmil_2awg: 42.4 N.m (375 in. lbs)
  • wire_strip_length: 15/16”
  • terminal_screw_drive: 5/16 in. hex
  • fastener_size: #5/16
  • mounting_torque_recommendation: 50 in lbs

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You can click on the BUY or RFQ button to purchase 6J400A3BFBD from an authorized MARATHON/KULKA distributor.

How do I troubleshoot issues or seek technical support for part 6J400A3BFBD?

You can download the 6J400A3BFBD datasheet or visit the MARATHON/KULKA website for support.

Who is the manufacturer of 6J400A3BFBD?

MARATHON/KULKA

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