Mars 12951 – 60 MFD Oval Run Capacitor, 440V
The Mars 12951 is a 60 microfarad (µF), 440 VAC-rated oval motor run capacitor engineered for continuous-duty operation in single-phase motors. This component is commonly installed in HVAC systems for fan motors, blowers, and compressors requiring reliable phase-shift support and stable current flow.
Product Specifications:
Capacitance: 60 µF (±6%)
Voltage Rating: 440 VAC
Frequency: 50/60 Hz
Case Style: Oval aluminum
Dielectric: Metallized polypropylene film
Terminals: 4 quick-connect blade terminals
Internal Protection: Pressure-sensitive interrupter
Operating Temperature Range: -40°C to +70°C
Non-PCB: Yes
Compliance: Meets EIA-456A performance standards
Performance Characteristics:
Maintains motor efficiency and reliability in HVAC systems operating under continuous duty
Dual-voltage compatible for replacement flexibility in 370V or 440V applications
Compact oval profile designed for tight enclosures
Internal arc-interrupter provides safety shutoff in case of failure
Suitable for air handling units, condensers, and other permanent split capacitor motor systems
Installation Notes:
Always confirm capacitance and voltage ratings against the original equipment specification. Disconnect power before handling, and discharge old capacitors safely. Installation should comply with local codes and be performed by trained HVAC professionals.