Single Run Capacitor, Round, 40/440 uF

Mars 12745 – Jard 40 MFD 440V Round Motor Run Capacitor The Mars 12745 capacitor from the Jard product line is a single-value motor run capacitor rated at 40 microfarads (µF) with a voltage rating of 440V AC. Designed for continuous-duty operation, this component is suited for use in HVAC applications including fan motors, compressors, and blowers in residential and light commercial systems. Manufactured with metallized polypropylene film and enclosed in an aluminum round case, it includes an internal pressure-sensitive interrupter to safely disconnect in the event of a fault. It is a non-PCB design and is UL-recognized to meet safety and performance standards. Technical Specifications Manufacturer: Mars (Jard) Model Number: 12745 Capacitance: 40 µF Voltage: 440 VAC Frequency: 50/60 Hz Operating Temperature: -40°C to +70°C Case Style: Round aluminum Terminal Type: ¼" quick-connect Dimensions: Approx. 4.25" height × 1.75" diameter Dielectric Type: Metallized polypropylene film Internal Protection: Pressure-sensitive interrupter Non-PCB: Yes UL Recognition: UL 810 Application Information Intended for use in single-phase PSC motors Supports HVAC components requiring a stable 40 µF capacitance at 440V Interchangeable with other capacitors matching the same ratings Installation Guidelines Disconnect power and discharge capacitor before handling Confirm capacitance and voltage ratings match system requirements Observe proper terminal polarity and secure all connections Mount securely to minimize vibration or mechanical stress Follow all NEC and local code standards—professional installation is recommended Use Case Summary The Mars 12745 is engineered for routine replacement or specification-based installation in air conditioning and refrigeration units. It is a direct-fit solution for systems requiring 40 µF capacitance and 440V operation and is built to withstand demanding thermal and electrical environments.