The Carrier HR46TN005 Motor Master variable frequency drive (VFD), 5hp, 3 phase, 400/480 VAC
Carrier HR46TN005 Motor Master VFD – 5HP 3-Phase 400/480V
Overview
The Carrier HR46TN005 Motor Master VFD is a high-performance, OEM variable frequency drive designed for controlling three-phase motors in demanding HVAC, compressor, and fan applications. With a 5 HP rating and operating on a 400/480 VAC power supply, this drive offers variable speed control to enhance system efficiency, reduce energy use, and extend life of mechanical components. Weighing approximately 15 lbs and measuring 9 × 8 × 7 inches, it’s built for drop-in replacement in many Carrier and compatible systems. Apex Controls
Key Features & Benefits
Matches OEM Carrier specifications for drop-in replacement in Motor Master / MotorMaster V applications.
Variable speed control enables better efficiency, quieter operation, and reduced wear on motors by avoiding full-speed all the time.
3-phase power architecture for industrial / commercial loads; handles 400-480V input / output.
Compact, yet rugged, build with all required protections (overload, overvoltage, etc.) – ideal for replacing legacy units.
Weight and size suited for relatively easy handling / installation in motor control panels.
Specifications
| Specification | Detail |
|---|---|
| Brand | Carrier |
| Model | HR46TN005 Motor Master VFD |
| Horsepower | 5 HP (Apex Controls) |
| Phase | 3-phase |
| Voltage | 400/480 VAC input / output (Apex Controls) |
| Weight | ~ 15 lbs (Apex Controls) |
| Dimensions | ~ 9 × 8 × 7 inches (Apex Controls) |
| Frequency | 50/60 Hz (typical for such drives) |
Applications
This VFD is ideally used for:
Fan / blower speed control in large HVAC systems (e.g., rooftop units, air handlers).
Compressor motor control applications where speed modulation helps reduce power peaks.
Systems requiring OEM-compliant motor control for Carrier or compatible equipment.
Situations where retrofit of older fixed-speed drives is needed to improve efficiency or reduce noise.
Installation & Best Practices
Verify correct voltage and phase before installation; mismatched supply can damage the drive.
Ensure proper cooling / ventilation around the unit – VFDs generate heat.
Use proper cable gauge and grounding; follow the manufacturer’s wiring diagram.
Protect from environmental contamination (dust, moisture) for reliable operation.
Check for firmware or parameter setup (if the drive has adjustable settings) to ensure correct speed, overload limits, etc.
Why Buy From Apex Controls
OEM quality Carrier part; reliability assured.
Verified spec details (weight, dimensions, power rating) to help you choose the right drive.
Prompt shipping and honest stock availability; support if you need technical or fitting advice.



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