Single Run Capacitor, Round, 45/440 uF

Mars 12748 – Jard by Mars 45 MFD, 440V Round Motor Run Capacitor The Mars 12748 is a single-value motor run capacitor designed for use in HVAC systems that require 45 microfarads (MFD) at 440 volts AC. It is used to provide phase-shifting power in permanent split capacitor (PSC) motors, such as those found in condensers, fan motors, and blowers. This capacitor features a metallized polypropylene film dielectric sealed in a round aluminum case. It includes a pressure-sensitive interrupter for safety and is manufactured without PCBs. Built to meet the operational demands of high-cycle and high-temperature environments, it is compliant with UL and RoHS standards. Technical Specifications Capacitance: 45 MFD (±5%) Rated Voltage: 440 VAC Frequency: 50/60 Hz Case Style: Round aluminum can Dielectric Material: Metallized polypropylene film Temperature Range: -40°C to +70°C Safety Interrupter: Yes (internal pressure-sensitive design) Construction: Non-PCB, oil-filled Typical Dimensions: ~3-3/8 in. height × 2 in. diameter Terminal Type: Dual ¼" male quick-connect blades Certifications: UL recognized, RoHS compliant Application and Usage Notes For use in single-phase HVAC systems with PSC motor circuits Suitable for motor start and continuous-duty operation in residential and light commercial systems Commonly installed in condenser fans, air handler blowers, and rooftop units Designed for OEM replacements and field service where 45 MFD, 440V capacitors are specified Professional Considerations Verify microfarad and voltage ratings against system requirements before installation Ensure proper electrical discharge of the capacitor prior to handling Mount using industry-standard brackets; compatible with most equipment footprint constraints Installation by qualified personnel is recommended to ensure safe and correct operation