Eaton Heavy Duty Safety Switch, Single-Throw Fused, 400A, 600V, 3-Pole 3-Wire, NEMA 1, Class H, Without Neutral

Eaton Heavy Duty Safety Switch Single-Throw Fused 400A Three-Pole 600V NEMA 1 Class H

Professional Heavy Duty Electrical Disconnect Switch

The Eaton Heavy Duty Safety Switch delivers exceptional electrical power management and control performance for commercial and industrial electrical isolation applications. This 400A three-pole single-throw fused safety switch provides reliable electrical protection and power disconnection designed for professional electricians, electrical contractors, and facility managers, offering the proven reliability and advanced technology that professionals trust from the global leader in intelligent power management.

Professional Features & Benefits

Heavy Duty Electrical Performance

• 400 Ampere Rating - High-capacity current handling for demanding commercial and industrial electrical applications with reliable power switching performance
• 600 Volt Rating - Professional voltage capacity suitable for three-phase commercial and industrial electrical systems with maximum electrical safety
• Three-Pole Configuration - Complete three-phase electrical isolation and disconnection for comprehensive power control and electrical safety compliance
• Class H Fuse Provision - Compatible with Class H fuses for reliable overcurrent protection and electrical fault interruption in heavy duty applications

Professional Installation & Protection

• NEMA 1 Enclosure - Indoor general purpose enclosure protection suitable for commercial and industrial electrical installations with painted steel construction
• Single-Throw Operation - Simple and reliable electrical disconnection with positive on-off switching for safe electrical maintenance and service
• Fusible Without Neutral Design - Professional fused configuration for three-wire electrical systems with comprehensive overcurrent protection

Technical Specifications

Amperage Rating: 400A, Voltage Rating: 600V, Number of Poles: Three-pole, Number of Wires: 3, Enclosure: NEMA 1, Enclosure Material: Painted steel, Fuse Class Provision: Class H, Fuse Configuration: Fusible without neutral, Maximum Horsepower: 250 HP at 480V, 350 HP at 600V (3-phase), Wire Size: (2)#1/0-(2)300 kcmil or (1)#1/0-(1)750 kcmil Al, Dimensions: 24.38" W x 10.25" H x 45.5" D, Weight: 113 lbs, Certifications: UL Listed, Suitable for service entrance use with Neutral Kit installed

Installation & Usage

1. Verify electrical system compatibility with 400A three-pole 600V specifications and ensure proper electrical safety procedures
2. Mount safety switch in appropriate NEMA 1 indoor location with adequate clearance for electrical code compliance
3. Connect incoming and outgoing conductors using appropriate wire sizes from #1/0 to 300 kcmil copper or aluminum
4. Install appropriate Class H fuses matching the electrical load requirements and overcurrent protection needs
5. Test switch operation and verify proper electrical isolation and fuse coordination before energizing system
6. Label switch clearly for electrical safety identification and maintenance procedures

Professional Applications

Ideal for:

• Commercial Electrical Systems - Main electrical disconnects for office buildings, retail facilities, and commercial power distribution
• Industrial Power Distribution - Heavy duty electrical isolation for manufacturing equipment, motor control centers, and industrial machinery
• Service Entrance Applications - Main electrical service disconnects with neutral kit for building electrical service entrance installations
• Motor Control Centers - Feeder disconnects and electrical isolation for large motor control and power distribution systems
• Electrical Maintenance Safety - Lockout/tagout electrical isolation for safe maintenance of electrical equipment and systems
• Three-Phase Power Systems - Electrical disconnection for 480V and 600V three-phase commercial and industrial electrical applications
• Electrical Panel Feeders - Main and feeder disconnects for electrical distribution panels and switchgear applications
• Heavy Duty Equipment - Electrical isolation for large HVAC systems, industrial pumps, and high-horsepower motor applications

Heavy Duty Design Advantage

Eaton's heavy duty safety switch design provides superior electrical performance with robust painted steel construction, reliable single-throw operation, and professional-grade fuse provisions. The Class H fuse compatibility ensures optimal overcurrent protection while the three-pole configuration delivers complete electrical isolation for three-phase systems. Built for demanding commercial and industrial applications with UL Listed safety compliance.

Why Choose Eaton Quality?

With over a century of electrical power management innovation, Eaton delivers the professional quality and reliability that electricians, electrical contractors, and facility professionals trust worldwide. Our heavy duty safety switches feature UL Listed certification, proven electrical performance, and the advanced engineering that makes Eaton the global leader in intelligent power management solutions for commercial and industrial electrical applications.