Voltage Regulator 44-9143 Fit Thermo King SL-300 SL-200e SL-400 SL-400e SL-200

Voltage Regulator for Thermo King

This voltage regulator, also known by OEM cross-reference number 44-9143, manages and stabilizes electrical output for Thermo King SL-series refrigeration units. It ensures consistent voltage delivery to protect sensitive electronic components and maintain reliable operation. This voltage regulator is designed for Thermo King SL-300, SL-200e, SL-400, SL-400e, and SL-200 units.

Overview

This voltage regulator for Thermo King units is a direct replacement component that ensures stable electrical output for SL-series refrigeration systems. The voltage regulator for Thermo King models SL-300, SL-200e, SL-400, SL-400e, and SL-200 maintains proper charging voltage to protect the battery and electrical system. This voltage regulator 44-9143 is built to match OEM specifications for dependable performance.

Built For Performance

• Solid-state construction for reliable voltage regulation
• Precision-calibrated to match OEM 44-9143 specifications
• Heat-resistant housing for demanding refrigeration environments
• Plug-and-play design simplifies installation
• Corrosion-resistant terminals ensure long-term electrical connectivity
• Protects against over-voltage and voltage spikes

Fits These Machines

• for Thermo King SL-300
• for Thermo King SL-200e
• for Thermo King SL-400
• for Thermo King SL-400e
• for Thermo King SL-200

On-The-Job Use

• Used in transport refrigeration units for trucks and trailers
• Maintains stable charging in diesel-driven generator sets
• Ensures consistent voltage for temperature-control systems in cold chain logistics
• Supports long-haul operations where reliable electrical supply is critical

Specs At A Glance

Good To Know

Q: Will this voltage regulator work in my Thermo King SL-300? A: Yes, it is designed to fit and function in SL-300 models, along with SL-200e, SL-400, SL-400e, and SL-200 units. Always confirm your unit's serial number before ordering to ensure perfect compatibility.

Q: How do I know if my voltage regulator needs replacement? A: Common signs include battery undercharging or overcharging, flickering dash lights, or unstable system voltage. If your refrigeration unit shows these symptoms, replacing the regulator 44-9143 is a standard fix.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.