SQUARE D Safety Switch: Non-Fusible, 30 A, Three Phase, 240V AC, Galvanized Steel
SKU 3G-OTH-129157
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Frequently Asked Questions
What is a Square D DTU321 non-fusible safety switch used for?
The Square D DTU321 is a non-fusible safety switch used to safely disconnect power to three-phase industrial equipment operating at 240V AC. It is commonly installed in manufacturing, HVAC, and material handling systems where a visible disconnect is required for maintenance and safety compliance.
What are the specifications of the Square D DTU321 safety switch?
The Square D DTU321 is a 30 A, three-phase, non-fusible safety switch rated for 240V AC. It features a galvanized steel enclosure for indoor use. The manufacturer part number is DTU321. This switch provides a visible disconnect means for branch circuit protection in industrial control panels.
Where to buy a Square D DTU321 safety switch worldwide?
3G Electric supplies the Square D DTU321 safety switch to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this non-fusible disconnect switch.
How to install a Square D non-fusible safety switch?
Install the Square D DTU321 on a flat indoor surface using the mounting holes in the galvanized steel enclosure. Ensure the switch is wired per local electrical codes for 240V AC three-phase systems. Always verify the disconnect is in the OFF position before connecting incoming and outgoing conductors.
Used in
Common applications for SQUARESQUARE Products
3G Electric supplies SQUARE non-fusible safety switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
