Carrier HR81LG020 Flow Switch
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Carrier HR81LG020 Flow Switch

Carrier HR81LG020 Flow Switch

The Carrier HR81LG020 Flow Switch is a high-precision OEM replacement part designed for critical fluid monitoring in industrial and commercial HVACR systems. As a factory-authorized component, this thermal dispersion flow switch ensures the protection of high-value equipment like Carrier 30XA chillers, 30RAP AquaSnap units, and 30HXC water-cooled chillers. Manufactured by IFM Electronic (Model SC0516), it features a durable brass body and IP67 rated housing, providing resistance against moisture and contaminants in demanding mechanical rooms. This switch operates on 24V AC/DC and monitors flow velocities between 10 to 60 cm/s, acting as a failsafe against low flow conditions, pump failure, or heat exchanger freezing. By replacing legacy parts such as the 00PPN500001800A or HK680023, technicians can maintain original factory specifications and prevent catastrophic compressor damage or coil rupture due to inadequate refrigerant or water flow.

Key Benefits
  • Universal Compatibility: Direct fit for multiple Carrier industrial chillers and applied control systems.
  • Enhanced Durability: Robust brass construction with a corrosion-resistant sensor for long-term reliability in aggressive fluid environments.
  • Precise Monitoring: Highly sensitive thermal sensor detects fluid flow anomalies accurately without the moving parts found in traditional paddle switches.
  • All-Weather Protection: Standard IP67 enclosure protects internal electronics from water ingress and high humidity.
  • Simplified Installation: 3/8" I.D. electrical connection and compact 4 1/4" profile allow for easy integration into existing pipework.
Common Questions

Is the HR81LG020 compatible with all Carrier chillers?
It is specifically engineered for the 30XA, 30RAP, and 30HXC series. Always verify your specific model and serial number against the manufacturer’s parts manual before installation.

Can this flow switch be used for both water and glycol solutions?
Yes, this thermal flow switch is designed to sense the presence and velocity of various heat transfer fluids common in commercial HVAC systems.

What does the 24V rating signify for installation?
The unit requires a 24V AC/DC power supply, consistent with standard Carrier control circuits, ensuring seamless communication with the chiller's main control board.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

$216.48

Original: $618.51

-65%
Carrier HR81LG020 Flow Switch

$618.51

$216.48

Carrier HR81LG020 Flow Switch

The Carrier HR81LG020 Flow Switch is a high-precision OEM replacement part designed for critical fluid monitoring in industrial and commercial HVACR systems. As a factory-authorized component, this thermal dispersion flow switch ensures the protection of high-value equipment like Carrier 30XA chillers, 30RAP AquaSnap units, and 30HXC water-cooled chillers. Manufactured by IFM Electronic (Model SC0516), it features a durable brass body and IP67 rated housing, providing resistance against moisture and contaminants in demanding mechanical rooms. This switch operates on 24V AC/DC and monitors flow velocities between 10 to 60 cm/s, acting as a failsafe against low flow conditions, pump failure, or heat exchanger freezing. By replacing legacy parts such as the 00PPN500001800A or HK680023, technicians can maintain original factory specifications and prevent catastrophic compressor damage or coil rupture due to inadequate refrigerant or water flow.

Key Benefits
  • Universal Compatibility: Direct fit for multiple Carrier industrial chillers and applied control systems.
  • Enhanced Durability: Robust brass construction with a corrosion-resistant sensor for long-term reliability in aggressive fluid environments.
  • Precise Monitoring: Highly sensitive thermal sensor detects fluid flow anomalies accurately without the moving parts found in traditional paddle switches.
  • All-Weather Protection: Standard IP67 enclosure protects internal electronics from water ingress and high humidity.
  • Simplified Installation: 3/8" I.D. electrical connection and compact 4 1/4" profile allow for easy integration into existing pipework.
Common Questions

Is the HR81LG020 compatible with all Carrier chillers?
It is specifically engineered for the 30XA, 30RAP, and 30HXC series. Always verify your specific model and serial number against the manufacturer’s parts manual before installation.

Can this flow switch be used for both water and glycol solutions?
Yes, this thermal flow switch is designed to sense the presence and velocity of various heat transfer fluids common in commercial HVAC systems.

What does the 24V rating signify for installation?
The unit requires a 24V AC/DC power supply, consistent with standard Carrier control circuits, ensuring seamless communication with the chiller's main control board.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

Product Information

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Description

The Carrier HR81LG020 Flow Switch is a high-precision OEM replacement part designed for critical fluid monitoring in industrial and commercial HVACR systems. As a factory-authorized component, this thermal dispersion flow switch ensures the protection of high-value equipment like Carrier 30XA chillers, 30RAP AquaSnap units, and 30HXC water-cooled chillers. Manufactured by IFM Electronic (Model SC0516), it features a durable brass body and IP67 rated housing, providing resistance against moisture and contaminants in demanding mechanical rooms. This switch operates on 24V AC/DC and monitors flow velocities between 10 to 60 cm/s, acting as a failsafe against low flow conditions, pump failure, or heat exchanger freezing. By replacing legacy parts such as the 00PPN500001800A or HK680023, technicians can maintain original factory specifications and prevent catastrophic compressor damage or coil rupture due to inadequate refrigerant or water flow.

Key Benefits
  • Universal Compatibility: Direct fit for multiple Carrier industrial chillers and applied control systems.
  • Enhanced Durability: Robust brass construction with a corrosion-resistant sensor for long-term reliability in aggressive fluid environments.
  • Precise Monitoring: Highly sensitive thermal sensor detects fluid flow anomalies accurately without the moving parts found in traditional paddle switches.
  • All-Weather Protection: Standard IP67 enclosure protects internal electronics from water ingress and high humidity.
  • Simplified Installation: 3/8" I.D. electrical connection and compact 4 1/4" profile allow for easy integration into existing pipework.
Common Questions

Is the HR81LG020 compatible with all Carrier chillers?
It is specifically engineered for the 30XA, 30RAP, and 30HXC series. Always verify your specific model and serial number against the manufacturer’s parts manual before installation.

Can this flow switch be used for both water and glycol solutions?
Yes, this thermal flow switch is designed to sense the presence and velocity of various heat transfer fluids common in commercial HVAC systems.

What does the 24V rating signify for installation?
The unit requires a 24V AC/DC power supply, consistent with standard Carrier control circuits, ensuring seamless communication with the chiller's main control board.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.