Eaton Main Fusible Switch 600A Three-Phase NEMA 3R Underground Class T

Eaton Main Fusible Switch 600A Three-Phase NEMA 3R Underground Class T

Heavy-Duty Electrical Distribution & Protection

The Eaton Main Fusible Switch delivers reliable 600A three-phase electrical distribution with robust aluminum bus construction and NEMA 3R weatherproof enclosure for underground service applications. This UL Listed switch features Class T fuse clips with 100 kAIC interrupt rating, four-wire configuration, and 120/208V operation for professional electrical installations requiring dependable overcurrent protection and service disconnect capability.

Professional Features & Benefits

• 600A Amperage Rating: Handles substantial electrical loads for commercial and industrial applications with reliable current-carrying capacity.
• NEMA 3R Enclosure: Weatherproof protection against rain, sleet, and ice formation for outdoor and underground installations.
• Class T Fuse Clips: Current-limiting fuse technology provides superior arc fault protection and equipment safety.
• 100 kAIC Interrupt Rating: High fault current interrupting capability ensures safe operation under severe electrical fault conditions.
• Aluminum Bus Construction: Lightweight yet durable bus material reduces installation weight while maintaining excellent conductivity.
• Three-Phase Four-Wire Design: Accommodates standard commercial power distribution with neutral conductor for balanced loading.
• UL Listed Certification: Meets rigorous safety standards for professional electrical installations and code compliance.

Technical Specifications

• Amperage Rating: 600A
• Bus Material: Aluminum
• Catalog Notes: If Class H fuse clips are needed use catalog number WCG3HK400 (order (1) per phase). If Class R fuse clips are needed order catalog number DS56FK in addition to WCG3HK400. In order to go from T to R the device must first be converted to H.
• Certifications: UL Listed
• Department: Electrical
• Enclosure: NEMA 3R
• Feed Type: Bottom
• Fuse Clip Type: Class T
• Interrupt Rating: 100 kAIC
• Number Of Wires: 4
• Phase: Three-phase
• Product Group: Electrical
• Product Height: 47.7 in
• Product Length Depth: 17.09 in
• Product Weight: 135 lb
• Product Width: 20.17 in
• Used With: Barrier kits available 400A-800A fusible switches: Bottom feed-3MFSBBK, Top feed-3MFSTB
• Utility Approvals: NC : Dominion
• Voltage Rating: 120/208 V
• Wire Size: (2) #4 AWG-600 kcmil

Installation & Operation

1. Mount the unit in a suitable location with appropriate clearance and access for connections and service.
2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
4. Configure any available load management or control features as supported by the provided specifications.
5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

• Commercial Building Main Service Disconnect
• Industrial Facility Power Distribution
• Underground Electrical Service Installations
• Multi-Tenant Property Electrical Systems
• Utility Service Entrance Applications
• Heavy-Duty Equipment Protection
• Emergency Power System Integration

Why Choose Eaton Quality?

Eaton delivers proven reliability with UL Listed certification and robust aluminum bus construction designed for demanding electrical environments. The NEMA 3R weatherproof enclosure and 100 kAIC interrupt rating provide long-term durability and safety for critical power distribution applications, backed by comprehensive utility approvals including NC Dominion for professional confidence.