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GE THFP368

Product Name:​ Type THFP 3-Pole Panel-Mounted Fusible Switch
Product Introduction:​ The THFP368 is a General Electric Type THFP 3-phase, 3-pole, 600 V, 1200 A panel-mounted fusible switch. It is a heavy-duty disconnect device intended for industrial power distribution applications requiring high interrupt capacity.
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Detailed content

Technical Specifications:
  • Manufacturer: General Electric
  • Type: THFP
  • Voltage: 600 V
  • Amperage: 1200 A
  • Phase: 3-phase
  • Poles: 3
  • AIC rating: 200 kA @ 480 V
  • Fuse class: H, R
  • Configuration: Single switch
  • Style: Fusible
  • NEMA rating: NEMA 1
Functional Features:
  • Heavy-duty panel-mount construction
  • Accepts Class H and Class R fuses
  • Single-switch fusible configuration
  • NEMA 1 indoor enclosure rating
  • High short-circuit withstand capability (200 kA AIC at 480 V)
Material Composition:​ Industrial-grade metal enclosure and switch mechanism; copper alloy electrical contacts; fuse holders compatible with Class H and R cartridges.
Structural Characteristics:
  • Panel-mount form factor
  • 3-pole, single-switch configuration
  • Fusible style with Class H/R fuse acceptance
Working Principle:​ The THFP368 serves as a fusible panel-board disconnect switch. Under normal operation, it provides a manual make/break disconnect for 600 V, 3-phase, 1200 A circuits. In an overcurrent or short-circuit event, the installed Class H or R fuses open to clear the fault, protecting downstream equipment. The 200 kA AIC rating at 480 V ensures the switch can withstand extremely high fault currents without catastrophic failure.
Installation Requirements:​ Panel-mount in a suitable NEMA 1 indoor enclosure. Install Class H or R fuses rated for the circuit’s ampacity and short-circuit capacity. Ensure proper torque on all terminations. Wiring must comply with NEC and local electrical codes. The switch is NEMA 1 rated and is intended for indoor use.
Usage Precautions:​ This is a high-current (1200 A) device—installation and service must be performed only by qualified electricians. Always de-energize and verify zero voltage on both the line and load sides before operating or servicing. Use only Class H or R fuses of the correct rating. The 200 kA AIC rating at 480 V must be verified against the available fault current at the installation point. NEMA 1 rating means the switch is for indoor, dry-location use only.

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