Eaton main fusible switch 400A Copper NEMA 3R - Electrical Distributor Switchgear Solutions

This Eaton main fusible switch is designed for heavy-duty electrical distribution and protection in commercial and industrial applications. Rated at 400 amperes with copper bus material, it supports four-wire, three-phase underground installations. The NEMA 3R enclosure ensures weather resistance suitable for outdoor or wet locations. This switch is compatible with Class T fuses and rated for 100 kAIC interrupting capacity, providing reliable circuit protection. It features bottom feed capability and barrier kits for 400A-800A fusible switches, accommodating wire sizes from (2) #1/0 AWG to 300 kcmil and (1) 750 kcmil, suitable for 120/208V systems. Eaton's robust design supports electrical distributors and switchgear suppliers seeking durable and safe power management solutions.

Specifications

• Manufacturer: Eaton
• Manufacturer Part #: 3MFS400RBC
• Amperage: 400 amperes
• Bus Material: Copper
• Enclosure: NEMA 3R
• Feed Type: Bottom
• Number of Phases: 3
• Dimensions (HxWxD): 47.7 in x 16.64 in x 22.54 in
• Interrupting Rating: 100 kAIC
• Voltage: 120/208V
• Wire Size Range: (2) #1/0 AWG - 300 kcmil, (1) 750 kcmil
• Weight: 74 lbs

Features

• Fusible switch with Class T fuse compatibility
• Bottom feed design for flexible installation
• Four-wire, three-phase configuration for commercial power distribution
• Corrosion-resistant NEMA 3R enclosure for outdoor and underground applications
• Includes barrier kits for enhanced safety and ease of wiring
• Robust copper bus for superior conductivity and durability
• Supports wire sizes up to 750 kcmil for high-capacity connections

Downloads & Links

• Eatons Volume 1-Residential And Light Commercial
• Dimensional Drawing - Multiple Metering Main Fusible Switch Bottom Feed