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Jard 12781 30/5 MFD Round Run Capacitor (440/370V)
A dual run capacitor used in HVAC equipment to provide the specified run capacitance values needed for proper motor operation in compatible systems.
Key Features:
- Dual run capacitor (as specified)
- Capacitance: 30/5 MFD
- Voltage: 440/370V
- Shape: Round
- Electrical frequency: 50/60 Hz
- Construction details : Aluminum composition; 4 terminals
- Environmental/performance details : -40°C to +70°C temperature range; 60,000 hours operational life
- Dimensional details : 2.125" case height, 2" width, 2.625" overall height
- Manufacturer product family notes : non-PCB capacitors; physical interrupter safety feature; designed as an economy/quality contractor-accepted replacement option
Compatibility & Applications:
- Intended for HVAC applications that require a dual run capacitor with 30/5 MFD and 440/370V ratings .
- Must only be used where the manufacturer specifies this exact part number: 12781.
Installation & Operation Notes:
- Installation should be performed by a qualified HVAC technician.
- Reference the controlled equipment's service/installation manual to confirm the required capacitor ratings and proper terminal connections before energizing the system.
- The provided sources do not include detailed wiring diagrams or safety procedures; follow equipment documentation and standard capacitor handling practices appropriate for HVAC service.
Maintenance & Troubleshooting:
- This capacitor is typically replaced when diagnostics indicate a run capacitor is out of specification or when motor operation issues are traced to the dual run capacitor (diagnostic procedures are not provided in the supplied sources).
- If issues persist after replacement, confirm the installed capacitor matches the required MFD and voltage ratings and that all connections are correct per the equipment documentation.
Certifications & Compliance:
- Manufacturer listing states UL & cUL for these capacitors.
User Reviews & Q&A Summary:
- Review themes commonly describe it as a correct replacement capacitor that restores cooling operation when a failed capacitor is replaced.
- Many comments focus on getting the right part quickly and returning equipment to service, with frequent notes about straightforward replacement once the correct rating is confirmed.
Product Highlights
440v, 370VÂ Â Â 
30/5 MFD Â Â Â 
RoundSpecs
| Type: | Capacitor |
|---|---|
| Voltage: | 440v 370V |
| MFD: | 30/5 |
| Shape: | Round |
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