Cutler-Hammer DH365NRK - 400A, 600V, 3-Pole, Heavy-Duty, Safety Switch

Introducing the Cutler-Hammer DH365NRK—a robust 400A, 600V three-pole safety switch engineered for reliable on/off isolation and dependable overcurrent protection in demanding industrial and commercial environments. Built for tough conditions, this heavy-duty disconnect point keeps personnel safe during maintenance while safeguarding connected equipment.

• 3-Pole design supports three-phase systems for synchronized disconnection across all lines
• 400A amperage with a 600V maximum rating delivers solid protection for high-demand loads
• Heavy-duty construction tailored for rugged industrial use and long service life
• Fusible switch configuration offers integrated overload protection within a compact, maintainable footprint
• Compact design that fits neatly into motor control centers, panelboards, and branch-circuit protection schemes

Ideal for motor disconnects, panelboards, and branch circuit protection, the DH365NRK excels in applications like packaging lines, conveyors, HVAC drive setups, and other heavy equipment where a clear isolation point is essential for safe servicing. The 3-pole arrangement ensures all phases are simultaneously opened or closed, reducing arcing risk and enhancing overall system reliability.

What sets this safety switch apart is its purpose-built combination of durability and maintainability. The design emphasizes straightforward access to critical components, enabling faster maintenance without compromising safety. Its compact footprint helps you optimize space in crowded equipment rooms while delivering dependable protection for demanding loads.

Specifications at a glance

• Model: DH365NRK
• Amperage: 400A
• Voltage: 600V
• Poles: 3-Pole
• Duty: Heavy
• Applications: Motor disconnects, panelboards, branch circuit protection

Maintenance and installation tips

• Plan for proper enclosure and mounting to ensure safe access and alignment with other protective devices
• Follow lockout/tagout procedures during maintenance to protect personnel
• Periodically inspect connections, contacts, and enclosure integrity for signs of wear or corrosion
• Keep the disconnect clear of debris and ensure torque on lugs and fasteners is within recommended ranges

Choose the Cutler-Hammer DH365NRK for a dependable, long-lasting safety switch that delivers precise isolation, integrated protection, and practical maintenance access—engineered to keep industrial and commercial electrical systems safe, compliant, and running smoothly.