Eaton Heavy Duty Safety Switch Fusible 400A Three-Pole 240V NEMA 3R Class H Neutral

Eaton Heavy Duty Safety Switch Fusible 400A Three-Pole 240V NEMA 3R Class H Neutral

Professional Heavy Duty Electrical Disconnect Switch

The Eaton Heavy Duty Safety Switch delivers exceptional electrical power isolation and protection performance for commercial and industrial applications. This 400A three-pole fusible safety switch provides reliable electrical disconnect and overcurrent protection 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

• 400A Current Rating - High-capacity electrical disconnect for demanding commercial and industrial power distribution systems
• Three-Pole Configuration - Complete three-phase electrical isolation with four-wire capability for comprehensive system protection
• 240V Voltage Rating - Optimized for standard commercial and industrial electrical systems with reliable voltage handling
• Class H Fuse Provision - Compatible with standard Class H fuses for flexible overcurrent protection and easy maintenance

Weather-Resistant Protection

• NEMA 3R Enclosure Rating - Weather-resistant protection for outdoor installations with rain and sleet resistance
• Painted Galvanized Steel Construction - Durable corrosion-resistant enclosure material for long-term outdoor performance
• Heavy Duty Design - Robust construction engineered for demanding industrial and commercial electrical environments

Professional Installation Features

• Neutral Provision - Includes neutral connection for complete four-wire electrical system compatibility
• Fusible Design - Integrated fuse holders for reliable overcurrent protection and easy fuse replacement
• UL Listed Certification - Meets rigorous electrical safety standards for professional installation confidence

Technical Specifications

Current Rating: 400A, Voltage Rating: 240V, Configuration: Three-pole four-wire, Enclosure: NEMA 3R, Enclosure Material: Painted galvanized steel, Fuse Class: Class H, Maximum Horsepower: 50 HP single-phase / 125 HP three-phase, Wire Size: #1/0-300 kcmil or #1/0-750 kcmil aluminum, Dimensions: 45.5" L x 24.38" W x 10.25" H, Weight: 120 lbs, Certifications: UL Listed

Installation & Usage

1. Verify electrical system is de-energized and follow proper lockout/tagout procedures before installation
2. Mount safety switch securely to appropriate surface using proper mounting hardware for enclosure weight
3. Connect incoming power conductors to line terminals following NEC wiring requirements and torque specifications
4. Install appropriate Class H fuses matching the load requirements and electrical system protection needs
5. Connect load conductors to load terminals ensuring proper wire size and connection integrity
6. Verify neutral connection if required for four-wire system configuration and grounding requirements
7. Test switch operation and verify proper electrical isolation before energizing the system

Professional Applications

Ideal for:

• Industrial Power Distribution - Heavy machinery disconnect and motor control applications requiring reliable electrical isolation
• Commercial HVAC Systems - Air conditioning and heating equipment disconnect switches for maintenance and safety
• Outdoor Electrical Equipment - Weather-resistant disconnect for outdoor motors, pumps, and electrical equipment
• Manufacturing Facilities - Production equipment electrical isolation and safety disconnect applications
• Water Treatment Plants - Pump and motor control applications requiring weather-resistant electrical protection
• Agricultural Operations - Irrigation systems and farm equipment electrical disconnect and protection
• Construction Sites - Temporary and permanent electrical distribution system disconnect requirements
• Utility Applications - Electrical service disconnect and distribution system isolation needs

Heavy Duty Design Advantage

Eaton's heavy duty safety switch design provides superior electrical performance through robust painted galvanized steel construction, weather-resistant NEMA 3R protection, and reliable fusible overcurrent protection. The three-pole four-wire configuration with neutral provision ensures complete electrical system compatibility while the 400A rating handles demanding commercial and industrial loads with professional-grade reliability.

Why Choose Eaton Quality?

With over a century of electrical power management innovation, Eaton delivers the quality, reliability, and safety that electrical professionals demand. This UL Listed safety switch represents Eaton's commitment to electrical safety standards and dependable performance, trusted by electricians, electrical contractors, and facility professionals worldwide for critical electrical disconnect and protection applications.