Overview
The Mallory OPN470Z capacitor is a proven oil-filled motor run capacitor designed for AC motor applications. Rated at 4µF and 370V, this unit operates across 50–60Hz frequency ranges and is built to meet industry reliability standards. With UL recognition (yellow card E65270) and quick-connect terminals, the OPN470Z provides straightforward integration into motor circuits and replacement applications in HVAC systems, compressors, and general motor loads.
Key Features
- 4µF capacitance at 370V nominal voltage
- Oil-filled construction for durability and heat dissipation
- Quick-connect terminals for fast, tool-free connection
- UL recognized (yellow card E65270) for safety and compliance
- 50–60Hz rated for both US and international applications
- Made in the USA for consistent quality
Technical Specifications
- Capacitance: 4µF (±5% tolerance typical)
- Voltage Rating: 370V AC
- Frequency: 50–60Hz
- Temperature Rating: 70°C
- Dielectric Material: Oil-filled
- Terminal Type: Quick-connect lugs
- UL Recognition: Yes (E65270)
- Country of Origin: USA
Typical Applications
- Air conditioning compressor motor starting and running
- Refrigeration equipment capacitor replacement
- HVAC motor phase-shift circuits
- General single-phase AC motor run compensation
- Industrial pump and fan motor support
Compatibility & Replacements
Compatible With
- Single-phase AC motors 1–5 HP range
- HVAC and refrigeration compressors
- General industrial motor circuits rated 370V 50–60Hz
- Equipment using 4µF run capacitor specifications
Replaces / Drop-In Replacement For
- OPN470 (earlier non-protected version)
- Other 4µF 370V motor run capacitors with quick-connect terminals
- Verify exact replacement before ordering if uncertain of original part number
Works With
- Standard motor run capacitor circuits
- 240V and 208V single-phase motor control systems
- Hermetic and semi-hermetic refrigeration compressors
- Direct replacement in existing motor mount configurations










