Carrier OT63B6-170 Disconnect Switch

The Carrier OT63B6-170 Disconnect Switch is a high-performance, non-fused power distribution component engineered for demanding HVACR applications. Designed for three-phase electrical systems, this 600 VAC disconnect switch provides a reliable method for isolating power during routine maintenance or emergency field repairs. Its compact form factor—measuring approximately 7.5 inches in length and 5 inches in width—allows for seamless integration into commercial HVAC equipment cabinets where internal clearance is limited. Operating at 60Hz frequency, this genuine OEM part ensures full compatibility with Carrier and Bryant rooftop units and split systems, maintaining the rigorous safety standards required for heavy-duty industrial service.

For technicians specializing in three-phase power distribution, the OT63B6-170 offers a robust 63-amp rating (based on standard OT series indexing) to handle the significant inrush currents typical of large compressors. The switch mechanism is built for high-cycle durability, providing a positive tactile break that confirms electrical isolation. By utilizing this OEM replacement disconnect, contractors can ensure that the field-installed safety disconnect aligns perfectly with original manufacturer specifications, reducing the risk of arc flash incidents or mechanical failure in the field. This unit is essential for maintaining NEC compliance on equipment requiring a visible means of HVAC electrical isolation.

• High-Voltage Rating: Specifically rated for 600 VAC three-phase operation, making it suitable for industrial and heavy commercial power grids.
• Compact Footprint: The 1.35 lb lightweight design and small dimensions allow for easy mounting in tight HVAC control panels.
• Non-Fused Design: Streamlines installation for systems that already feature localized branch circuit protection.
• OEM Precision: Guaranteed Carrier HVAC part compatibility, eliminating the alignment issues common with third-party universal switches.

• What is the maximum amperage for this switch? While part of the 63-amp OT frame series, always verify the specific FLA (Full Load Amps) of your equipment against the switch data plate to ensure proper sizing.
• Is this switch fused or non-fused? This is a non-fused disconnect switch, intended to provide a physical means of isolation rather than overcurrent protection.
• Can this be used on single-phase systems? While designed for three-phase HVAC systems, it can be wired for single-phase applications; however, professional consultation is recommended to ensure correct phase leg utilization.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.