Square D DTU Non-Fusible Double Throw Safety Switch, 100A NEMA 3

Square D DTU Non-Fusible Double Throw Safety Switch, 100A NEMA 3

The Square D DTU double throw safety switch from Schneider Electric delivers tough, reliable performance in demanding commercial and industrial power distribution installations. This non-fusible, double throw switch is rated 100A at 240V AC / 250V DC and housed in a NEMA 3 enclosure. This listing is available in 2-pole and 3-pole configurations, allowing installers to match the switch to single-phase or three-phase source-transfer applications while sharing the same 100A rating, voltage rating, and NEMA 3 enclosure across both pole counts. A bolt-on hub provision adds installation flexibility, and the unit is UL Listed for code-compliant use.

Key Features

• Amperage Rating: 100A supports reliable double throw source-transfer switching.
• Operational Voltage: Rated 240V AC and 250V DC (Ue) for AC and DC systems.
• Pole Configuration: Available in 2-pole and 3-pole versions to suit single-phase and three-phase transfer applications.
• Non-Fusible Double Throw Design: Manual double throw switching without fuses, simplifying maintenance.
• Bolt-On Hub Provision: Bolt-on hub prep adds flexibility for conduit connections.
• Wire Range: Accepts AWG 14...AWG 1/0 copper and AWG 12...AWG 1/0 aluminum, tightening torque 35-45 lbf.in.
• Enclosure Rating: NEMA 3 degree of protection for outdoor and industrial environments.
• Device Type: LV equipment - LV fuse-switch, non-fusible disconnect switch.

Certifications & Compliance

• UL Listed
• Meets or exceeds NEMA KS1
• Free of Substances of Very High Concern above the threshold (REACH)
• Mercury Free
• RoHS Exemption Information on file

Technical Specifications

• Toxic Heavy Metal Free: Yes
• Warranty Period: 18 months
• Sustainable Packaging: Yes
• Recycled Metal Content At Cr Level: 0 %
• Serviceability: No
• With Recycled Cardboard: Yes
• China ROHS In Scope: No
• Reach Free Shvc: Yes
• Legacy WEEE Scope: In
• Packaging Made With Recycled Cardboard: Yes
• Without Single Use Plastic: Yes
• ROHS Exemption Information: Yes
• WEEE Product Category: 4
• Mercury Free: Yes
• ROHS Eur In Scope: Yes
• China ROHS Label: 1
• Environmental Disclosure: ENVPEP2503028_V1
• Function Option Id: STANDARD
• Average Life Duration: 15 year(s)
• Take Back: No

Typical Applications

• Commercial and Industrial Power Distribution
• Manufacturing Facility Electrical Systems
• Manual Double Throw Source Transfer Switching
• Outdoor and Harsh Environment Installations (NEMA 3)
• Panelboard and Service Entrance Switching

Why Square D?

Square D by Schneider Electric engineers its DTU double throw safety switches for durability and reliable performance under grueling conditions, backed by an 18-month warranty and UL Listing. With a NEMA 3 enclosure and construction that meets or exceeds NEMA KS1, this switch delivers dependable, code-compliant power switching for industrial and commercial environments, whether specified in 2-pole or 3-pole configuration.