Square D DTU321 Double Throw Safety Switch – 3 Pole – 30A – 240VAC – Non-Fusible – F Series – NEMA 1 – Transfer Switch
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The Square D DTU321 is a double throw safety switch designed for reliable power transfer between two separate sources in residential, commercial, and light industrial electrical systems. Manufactured by Schneider Electric under the Square D brand, it is built for demanding environments where dependable switching and load transfer are required.
This 3-pole, 30A switch is rated for 240VAC operation and is part of the Square D F Series, offering high mechanical endurance beyond standard NEMA KS-1 and UL98 requirements. It is designed to transfer a load between two power sources safely and efficiently and can be padlocked in ON and OFF positions for added safety.
The DTU321 is a non-fusible double throw safety switch with a rugged enclosure design, making it suitable for harsh operating conditions and frequent switching applications.
Specifications
- Brand: Square D
- Manufacturer: Schneider Electric
- Part Number: DTU321
- Series: F Series
- Type: Double Throw Safety Switch
- Configuration: 3 Pole
- Phase: 3 Phase
- Current Rating: 30A
- Voltage Rating: 240VAC
- Duty Type: Double Throw / Transfer Switch
- Fusibility: Non-Fusible
- Interrupt Rating: 200kA @ 240V
- Mounting Style: Surface Mounted
- Enclosure Rating: NEMA 1
- Application Type: Load Transfer Switch
Construction Features
- Heavy-duty double throw switching mechanism
- Designed for reliable transfer between two power sources
- High mechanical endurance for frequent operation
- Padlockable ON/OFF positions for safety compliance
- Rugged industrial-grade enclosure design
- Suitable for harsh and demanding environments
Applications
- Power source transfer systems
- Backup generator switching
- Commercial and industrial electrical systems
- Residential backup power setups
- Critical load switching applications
- HVAC and building power management
Certifications & Standards
- UL Listed
- CSA Certified
- Meets NEMA and NEC requirements
- Designed per Square D / Schneider Electric F Series standards
- Type Switches
- Vendor Square D
- Brand Square D
Returns are easy
You may return items within 30 days of delivery for a refund.
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