Rectorseal 12291 Dual Run Capacitor 50/7.5 Mfd 440V Round

Product Description

The RECTORSEAL 12291 is a dual run capacitor rated at 50/7.5 microfarads (MFD) and 440 volts, designed for use in residential and light commercial HVAC systems. Dual run capacitors serve two motor circuits simultaneously — typically the compressor and the condenser fan motor — from a single round aluminum canister. Rated for 60,000 hours of operational life and tested across a temperature range of -40 degrees F to 158 degrees F, this capacitor is built for reliable continuous-duty performance. HVAC technicians install this part during routine maintenance, capacitor replacement, or system commissioning.

This capacitor is suited for split-system air conditioners and heat pumps where a single dual-section capacitor serves both the compressor and outdoor fan motor circuits. The round form factor fits standard capacitor mounting brackets found in most outdoor condensing units. Compatible operating voltage is rated at 440/370 volts, making it appropriate for both standard 370-volt and 440-volt motor applications. It operates on 50/60 Hz electrical systems, covering both domestic and international supply frequencies.

Key Features

• Dual-section design supports compressor and condenser fan motor from one unit
• 50/7.5 MFD rating covers common HVAC compressor and fan motor capacitor requirements
• 440/370-volt rating provides compatibility across standard residential HVAC voltage ranges
• Aluminum construction for heat dissipation in high-cycle outdoor environments
• Rated operational life of 60,000 hours for extended service intervals
• Wide temperature range: -40 degrees F to 158 degrees F

Compatibility

Designed as an OEM-style replacement dual run capacitor for residential and light commercial split-system air conditioners and heat pumps using a round dual-section capacitor at 50/7.5 MFD and 440 or 370 volts.

Installation Notes

Dual run capacitors must be installed by a qualified HVAC technician. Always disconnect and lock out power to the condensing unit before handling capacitors, as they retain a dangerous charge even after power is removed — discharge the capacitor safely before touching terminals. Verify MFD rating, voltage rating, and terminal configuration match the original unit before installation. Follow all applicable NEC requirements and local codes when replacing electrical components in HVAC equipment.

Technical Specifications

• Capacitor Type: Dual Run
• MFD Rating: 50/7.5 MFD
• Operating Voltage: 440/370 volts
• Frequency: 50/60 Hz
• Composition: Aluminum
• Maximum Rated Temperature: 70 degrees C (158 degrees F)
• Minimum Rated Temperature: -40 degrees C (-40 degrees F)
• Operational Life: 60,000 hours
• Form Factor: Round

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: 12291