Cutler-Hammer DH363URK - 100A, 600V, 3-Pole, Non-Fusible Disconnect Switch

The Cutler-Hammer DH363URK is a rugged, industry-grade Non-Fusible Disconnect Switch engineered for the demanding environments of industrial and commercial electrical systems. It delivers safe, immediate isolation and is designed to support lockout/tagout procedures, helping maintenance teams work confidently around energized equipment.

Powered by a three-pole configuration, this switch provides complete disconnection of all phases, reducing arc risks and ensuring safer service operations. With a 100 A rating and a 600 V maximum voltage, it suits a wide range of motor feeds, feeders, and equipment circuits commonly found in factories, plants, and large facilities. The DH363URK is built for longevity, delivering dependable performance across many switching cycles in real-world conditions.

Key benefits

• Non-fusible design offers straightforward, mechanical isolation without internal fuses, simplifying maintenance and safeguarding downstream equipment.
• 3-pole operation ensures all three phases are disconnected simultaneously for safer, more reliable de-energization.
• 600V rating aligns with typical industrial power systems, giving you broad compatibility.
• 100A capacity supports substantial motor loads, pumps, and industrial feeders without compromising performance.
• NEMA 3R enclosure provides weather-resistant protection for outdoor or semi-exposed installations, keeping terminals secure in varying conditions.
• Lockout/tagout readiness promotes OSHA-compliant safety during servicing and maintenance.
• Durable construction designed to endure frequent switching and harsh environments without sacrificing reliability.

Ideal use cases

• Outdoor and indoor motor circuits, pumps, HVAC equipment, and lighting feeders in commercial buildings and industrial facilities
• Service disconnect points where safe isolation is required before maintenance
• Emergency isolation for critical equipment to protect workers and assets

Why this matters for your operations

Choosing the DH363URK means prioritizing crew safety, compliance, and operational uptime. Its non-fusible design delivers predictable isolation without the complexity of internal fusing, while the 3P configuration guarantees complete shutdown of three-phase systems. The NEMA 3R enclosure extends protection against rain, dust, and outdoor exposure, so you can rely on safe performance whether the disconnect lives inside a panel or out in the elements.

Installation and compatibility notes

Designed for licensed electrical installations, the DH363URK should be wired by qualified personnel following local codes. Its specifications—100 A, 600 V, 3-Pole, non-fusible, with NEMA 3R protection—make it a practical replacement or upgrade for older disconnects in facilities planning safe, compliant isolation points with robust long-term durability.