Eaton RD40-3-508 - 40A, 3-Pole, Disconnect Switch

The Eaton RD40-3-508 is a rugged, three-pole disconnect switch engineered to deliver reliable on/off isolation and dedicated overcurrent protection in challenging industrial and commercial settings. With a 40A rating and a compact 3-pole design, this switch provides a dependable solution for controlling motors and protecting branch circuits without sacrificing space or ease of maintenance.

• Model: RD40-3-508
• Amperage: 40 A
• Poles: 3-Pole

Why this disconnect switch stands out

Designed for environments where reliability is non‑negotiable, the RD40-3-508 combines solid construction with practical maintenance simplicity. Its compact footprint fits neatly into panelboards or control enclosures, making it ideal for installations where space is at a premium. The three-pole configuration ensures full isolation of a three-phase circuit, protecting equipment during maintenance and reducing the risk of arc or fault spread.

As a fusible switch option, it supports targeted overcurrent protection while still offering straightforward accessibility for servicing and fuse replacement. This combination of protection, accessibility, and space efficiency makes it a practical choice for everyday motor disconnects and branch circuit protection where uptime and safety matter.

Ideal use cases and practical applications

• Motor disconnects in manufacturing lines, pumps, and HVAC systems where reliable isolation is required

• Panelboard assemblies that demand compact, maintainable switching solutions

• Branch circuit protection in commercial spaces where quick, clear access to disconnection is essential

How it supports dependable operations

Choosing the Eaton RD40-3-508 means prioritizing clear isolation, predictable protection, and serviceability. It helps minimize downtime during maintenance, simplifies inspections, and provides a straightforward, robust control point for three-phase equipment. If you need a compact, maintainable switch that delivers reliable disconnection and overcurrent protection for motor loads and branch circuits, the RD40-3-508 is a solid, field-ready choice.