Single Run Capacitor, Oval, 4/440 uF

Mars 12945 – 40 MFD Oval Run Capacitor, 440V The Mars 12945 is a single-value oval run capacitor rated at 40 microfarads (µF) and 440 volts AC. Designed for continuous-duty operation, it is used in single-phase induction motors within HVAC systems, such as condenser fan motors and blower motors. The capacitor supports motor efficiency and torque in systems requiring steady-state performance. Technical Specifications: Capacitance: 40 µF (±6%) Voltage Rating: 440 VAC Frequency: 50/60 Hz Operating Temperature Range: -40°C to +70°C Dielectric: Metallized polypropylene film Case Style: Oval aluminum Case Height: 3-3/8" Overall Dimensions: Approx. 3.875" height × 2.806" width Terminals: 4 quick-connect Dielectric Fluid: Non-PCB Safety Feature: Internal pressure-sensitive interrupter Performance Overview: Supports permanent split capacitor (PSC) motors requiring 40 µF at 440V Engineered for continuous motor operation in air conditioning and ventilation systems Designed for systems subject to high cycle rates and elevated ambient temperatures Compatible with OEM and aftermarket applications requiring this specific µF/voltage rating Meets industry standards for HVAC run capacitors, including EIA-456A Installation Notes: Confirm system requirements before installation. Ensure circuits are powered down and existing capacitors are discharged safely. Observe polarity and match terminal orientation as required. Install in accordance with NEC and applicable code. Qualified HVAC technicians should perform installation and testing.