Safety Switch · 100A 3-Pole 600V · Double Throw Non-Fusible · Eaton 1DT363NF

What this product is for

This heavy-duty double-throw safety switch is used to manually transfer a 3-pole load between two power sources. It is commonly selected for commercial and industrial power distribution, maintenance bypass arrangements, and source transfer applications where a non-fusible switch is required.

Use for

Use for 600 Vac systems up to 100A where a 3-pole, double-throw, non-fusible disconnect is needed. Typical applications include switching between normal and backup sources, isolating equipment, and controlled source selection in indoor electrical rooms.

Avoid for

Avoid using this switch where branch or feeder overcurrent protection must be built into the disconnect, because this is a non-fusible model. Also avoid outdoor or washdown locations unless the installation requires a weatherproof enclosure such as NEMA 3R or better.

Best for

Best for electricians and contractors needing a heavy-duty indoor transfer-style safety switch with straightforward manual operation and upstream protection already provided. It suits commercial buildings, light industrial facilities, and service distribution upgrades.

Installed in

Typically installed in indoor electrical rooms, service areas, mechanical spaces, and industrial control or distribution areas. The NEMA 1 painted steel enclosure is intended for general indoor use.

Why this product exists

This product provides a simple manual means to select between two sources and isolate circuits without adding fuse maintenance inside the switch. For many transfer and source-selection applications, a non-fusible double-throw switch is chosen when protection is handled elsewhere in the system.

Compared with similar products

Compared with a fused double-throw switch, this model reduces fuse inventory and maintenance but relies on upstream overcurrent protection. Compared with a single-throw safety switch, it is intended for source transfer or alternate-feed selection rather than simple on-off isolation.

Typical buying guidance: confirm ampacity, voltage rating, pole count, enclosure type, and whether the job requires fused or non-fusible construction. Actual suitability depends on system design, available fault protection, installation conditions, and local electrical code.

Specifications

• Manufacturer part number: 1DT363NF
• Brand: Eaton
• Product type: Heavy-duty double-throw safety switch
• Switch type: Non-fusible
• Amperage: 100A
• Poles: 3-pole
• Wiring: 3-wire
• Voltage rating: 600 Vac, 250 Vdc
• Enclosure: NEMA 1 indoor
• Enclosure material: Painted steel
• Application: Manual transfer between two power sources