Run Capacitor, Oval, 2.5 MFD 440/370

Mars 12919 – 2.5 MFD 440V Oval Single Run Capacitor (Replaces Mars 12019)

The Mars 12919 is a single-value run capacitor rated at 2.5 microfarads (MFD) and 440 volts AC. Designed for use in single-phase induction motors, this oval capacitor is commonly used in fan motor circuits for air conditioning and refrigeration systems. The unit meets industry standards for electrical endurance and operational stability in continuous-duty applications.

Part of the Mars2 series, this capacitor serves as a direct replacement for the Mars 12019. Its compact oval design facilitates installation in confined compartments where round capacitors are not suitable. Constructed with oil-filled, non-PCB dielectric and a pressure-sensitive interrupter for added protection, the 12919 is built for long-term reliability in HVAC service environments.

Application Overview

• ✅ Capacitance: 2.5 MFD ±6%
• ✅ Voltage Rating: 440 VAC, 50/60 Hz
• ✅ Dielectric: Oil-filled, non-PCB compliant with RoHS directives
• ✅ Case Style: Oval aluminum shell with corrosion-resistant finish
• ✅ Terminals: Standard ¼-inch male quick-connect spade terminals

Dimensions

• Height: Approx. 2.0 inches
• Width: Approx. 1.3 inches
• Depth: Approx. 1.0 inch

Installation Considerations

The Mars 12919 is intended for installation by licensed HVAC technicians. Prior to replacement, verify that both capacitance and voltage ratings match the system specifications. Use insulated terminal connections and mount securely in an approved capacitor strap or bracket. Always ensure the circuit is de-energized and the old capacitor discharged prior to removal.

Contractor-Focused Features

• ✅ Direct Replacement: Interchangeable with Mars #12019
• ✅ Form Factor: Oval profile allows for installation in systems with space constraints
• ✅ UL Recognized Component: Meets safety and endurance standards for HVAC use
• ✅ Pressure-Sensitive Interrupter: Integrated internal disconnect function for safety
• ✅ Service Grade Build: Suitable for routine maintenance or emergency replacements