Mars 12933 – 12.5 MFD Oval Motor Run Capacitor, 440V
The Mars 12933 is a 12.5 microfarad (µF) oval run capacitor designed for continuous-duty use in single-phase induction motors operating at 440 volts AC. Commonly used in HVAC systems, this capacitor provides reliable power to fan motors, blowers, and other motor-driven components requiring stable electrical performance.
Technical Specifications:
Capacitance: 12.5 µF (±6%)
Voltage Rating: 440 VAC
Frequency: 50/60 Hz
Dielectric: Metallized polypropylene film
Temperature Range: -40°C to +70°C
Case Style: Oval
Terminals: 4 quick-connect terminals
Safety Interrupter: Integrated pressure-sensitive internal switch
Non-PCB: Yes
Product Features:
Designed to maintain consistent motor operation in high-cycle and elevated-temperature environments
Oval aluminum case allows installation in compact control housings or tight mechanical enclosures
Internal safety pressure interrupter provides added protection under fault conditions
Suitable for replacement or OEM applications where 12.5 µF, 440V capacitors are specified
Engineered to meet EIA-456A performance standards for run capacitors
Application Notes:
This capacitor is intended for use in permanent split capacitor (PSC) motor circuits. It supports steady-state torque and efficiency in systems requiring a 12.5 µF, 440V component. Ensure the existing capacitor is fully discharged before handling, and follow proper electrical safety procedures. Installation should be performed by licensed professionals in accordance with NEC and applicable codes.