Abb TH3363 100A 3-pole 600V Fusible Safety Switch Nema 1

Product Description

The ABB TH3363 is a heavy-duty fusible safety switch rated at 100 amps, 3 poles, and 600 volts, enclosed in a NEMA 1 enclosure for indoor installations. It provides a manual means of disconnecting power in branch circuits and feeder applications, serving as a required disconnect for motors, HVAC equipment, and other electrical loads. Licensed electricians install this switch as part of NEC-compliant disconnect installations in commercial and industrial facilities. The fused design allows overcurrent protection at the disconnect point, adding a layer of circuit protection beyond the upstream breaker.

The TH3363 is rated for heavy-duty commercial and industrial applications where a reliable, code-compliant fusible disconnect is required. Typical installations include motor disconnect service for HVAC units, compressors, pumps, and industrial machinery. The NEMA 1 enclosure is suited for dry indoor environments such as mechanical rooms, equipment rooms, and light industrial spaces. This switch is not rated for outdoor or wet locations.

Key Features

• 100-amp continuous current rating suitable for heavy motor and equipment loads
• 3-pole configuration handles three-phase power systems up to 600 volts
• Fusible design provides overcurrent protection integral to the disconnect
• NEMA 1 enclosure rated for dry indoor service
• Heavy-duty construction suited for commercial and industrial environments

Compatibility

Designed as an OEM-style heavy-duty fusible safety switch for use as a manual disconnect in commercial and industrial electrical systems requiring a 100-amp, 3-pole, 600-volt rated device in a NEMA 1 enclosure.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the upstream circuit and verify absence of voltage with a meter before opening the enclosure or making any connections. Ensure proper fuse selection matches the load requirements and does not exceed the switch ampere rating. The NEMA 1 enclosure must be installed in a dry, indoor location only.

Technical Specifications

• Current Rating: 100 amps
• Number of Poles: 3
• Voltage Rating: 600 volts
• Switch Type: Fusible
• Duty Rating: Heavy Duty
• Enclosure Type: NEMA 1 (Indoor)
• UPC: 783164009132

Standard Information

• Brand: ABB
• Manufacturer Part Number: TH3363