Overview
The Industrial Condenser Corp 45RT4X20 is a vintage paper-dielectric capacitor designed for high-voltage industrial applications. Rated at 20 MFD (microfarads) and 450V DC, this Royalitic paper capacitor represents reliable capacitor technology from the mid-20th century era. Used for motor run circuits, power factor correction, and other industrial electrical systems, the 45RT4X20 remains a sought-after component for equipment restoration, repair, and legacy system maintenance.
Key Features
- 20 MFD capacitance rating—precise for legacy motor and power factor applications
- 450V rated operating voltage—suitable for high-voltage industrial circuits
- Paper-dielectric construction (Royalitic type)—proven long-term stability
- Vintage/used condition—authentic original equipment for restorations
- Industrial-grade durability—built to withstand industrial electrical demands
Technical Specifications
- Capacitance: 20 MFD (microfarads)
- Voltage Rating: 450V DC
- Dielectric Type: Paper (Royalitic)
- Part Number: 45RT4X20
- Manufacturer: Industrial Condenser Corporation
- Series: 45RT (vintage industrial)
- Condition: Used, fully functional
- Quantity per Unit: 2 (dual-capacitor set)
Typical Applications
- Motor run circuits in vintage industrial machinery
- Power factor correction in legacy electrical systems
- HVAC and refrigeration equipment (compressor and fan motor support)
- Generator and transformer excitation circuits
- Audio and musical instrument amplifier bias/filtering
- Equipment restoration and retrofitting
Compatibility & Replacements
Compatible With
- Vintage industrial electrical systems rated 450V or lower
- Legacy motor control circuits requiring 20 MFD capacitance
- Mid-20th century HVAC and mechanical equipment
- Systems designed for paper-dielectric capacitors
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 45RT4X20 is a specific vintage model; direct replacement availability depends on your exact equipment and electrical requirements. When substituting modern capacitors for this vintage unit, ensure voltage and capacitance ratings match within industry tolerance (±10% capacitance per EIA standards).
Works With
- Vintage motor control and soft-starter circuits
- Power distribution systems rated 450V or lower
- Industrial electrical restoration and equipment repair shops
- Audio and vintage electronics restoration communities
