SQUARE D Non-Fusible Safety Switch
The SQUARE D Safety Switch: Non-Fusible (MPN DU321) is a 30 A, three-phase, 240V AC non-fusible safety switch constructed from galvanized steel for indoor use. 3G Electric interprets your demand for this SQUARE D…
SKU 3G-OTH-129131
Also listed as: DU 321 · DU-321
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The SQUARE D Safety Switch: Non-Fusible (MPN DU321) is a 30 A, three-phase, 240V AC non-fusible safety switch constructed from galvanized steel for indoor use. 3G Electric interprets your demand for this SQUARE D switch and delivers it with specialist support across 14 industrial departments, including electrical and controls.
Frequently Asked Questions
What is a Square D non-fusible safety switch used for?
A Square D non-fusible safety switch provides a manual disconnect for three-phase equipment up to 240V AC. It is used in industrial and commercial settings to safely isolate motors, pumps, and machinery during maintenance or emergency shutdown, ensuring personnel safety.
What are the specifications of the Square D DU321 safety switch?
The Square D DU321 is a non-fusible safety switch rated for 30 A, three-phase, 240V AC. It features a galvanized steel enclosure for indoor use. This model provides reliable disconnect capability for industrial equipment and is part of Square D’s durable safety switch line.
Where to buy a Square D DU321 safety switch worldwide?
3G Electric supplies the Square D DU321 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 pricing and lead time on this non-fusible safety switch.
How to install a Square D non-fusible safety switch?
Installation should follow the manufacturer’s instructions and local electrical codes. Mount the galvanized steel enclosure indoors on a secure surface, connect line and load conductors to the appropriate terminals, and verify the switch disconnects all phases before energizing. Always de-energize upstream circuits before work.
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.
