Square D DTU361 30A 3P 600V Safety Switch, NEMA 1, Fusible, Non-Fusible | AmpState

Meet the Square D DTU361 Safety Switch—a robust, indoor-rated disconnect designed for everyday electrical work. With a 30 A rating and 600 V capacity, this three-pole device delivers reliable equipment isolation right at the point of use, helping maintenance teams keep systems safe and downtime minimal.

Available in NEMA 1 enclosures with both Fusible and Non-Fusible configurations, the DTU361 is a smart choice for maintenance crews, panel builders, and spare inventories where a direct part-number match matters. This flexibility means simpler ordering, faster stocking, and fewer surprises when outages demand quick, effective isolation.

Why this safety switch stands out

• Flexible fusing options: choose Fusible for integrated overcurrent protection or Non-Fusible when you want to pair with an external protective device—giving you control over how protection is implemented in your system.
• Reliable, full-coverage isolation: a true three-pole design ensures all conductors are safely disconnected during maintenance or emergency shutdowns.
• Indoor-ready durability: the NEMA 1 enclosure is built for environments where dust exposure is possible and routine use is expected, making it ideal for commercial and light-industrial settings.
• Direct part-number fit: specifically sized and configured to align with Square D installations, reducing configuration guesswork for your panel builds.
• Part-number precision with AmpState: readily available as DTU361 through AmpState, simplifying procurement and inventory planning.

Who benefits from the DTU361?

• Maintenance teams performing routine service on motors, conveyors, and other 600V equipment that require safe disconnection at the point of use.
• Panel builders integrating a dependable disconnect into control cabinets and distribution panels.
• Facilities and service fleets keeping a ready spare for quick outages and field repairs, helping you minimize downtime.

Practical use scenarios

• Isolate a circuit for motor work on a production line, ensuring all hot legs are safely disconnected before maintenance begins.
• Incorporate into a control panel design to provide a compliant, easily accessible shutdown point for maintenance and testing.
• Stock as a reliable, standard-fit replacement in service trucks dealing with 600V distributions across commercial facilities.

Technical snapshot

• Amperage: 30 A
• Poles: 3
• Voltage: 600 V
• Enclosure: NEMA 1
• Configuration: Fusible or Non-Fusible
• Part Number: DTU361
• Brand: Square D
• Availability: AmpState

Installation and maintenance tips

• Verify you have the correct configuration—fusible versus non-fusible—before installation to match your protection strategy.
• Follow standard lockout/tagout procedures and ensure power is fully de-energized during service or replacement.
• Keep a ready supply of compatible fuses if you’re using the fusible version, and reference your panel design for fuse ratings.
• Consult AmpState if you’re unsure about compatibility or fit with your existing distribution, control panel, or motor circuits.

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Choose the Square D DTU361 safety switch for dependable isolation, straightforward procurement, and a design tailored to real-world maintenance and panel-building needs. It’s engineered for clarity in operation, reliability in use, and efficiency in stock management—so you can keep your electrical systems running smoothly.