Schneider LR9F5371 | TeSys LRF – electronic thermal overload relay – 132…220 A – class 10

Schneider LR9F5371 | TeSys LRF – Electronic Thermal Overload Relay, 132…220 A, Class 10

The Schneider LR9F5371 is a high-performance electronic thermal overload relay designed for the protection of large motors. It belongs to the TeSys LRF series, offering advanced features for precise motor protection and enhanced operational safety.

General Information:

• Brand: Schneider Electric

• Series: TeSys LRF

• Model: LR9F5371

• Product Type: Electronic Thermal Overload Relay

• Current Range: 132 to 220 A

• Trip Class: Class 10 (fast trip for standard motors)

Key Features:

• Electronic Overload Protection: Ensures accurate motor protection by using electronic sensing

• Wide Current Adjustment Range: 132–220 A for flexible protection across various applications

• Phase Failure & Imbalance Detection: Reliable operation even under adverse electrical conditions

• Trip Indication LED: Immediate visual feedback for easier troubleshooting

• Manual & Auto Reset Options: Versatile resetting depending on your system’s needs

• Auxiliary Contacts: Comes with 1 NO + 1 NC contacts for signaling and control circuits

• Test Function: Built-in test feature to simulate tripping for maintenance and system checks

• Compact Mounting Design: Easily attaches to TeSys F series contactors for a space-saving solution

Technical Specifications:

• Adjustable Current Range: 132 to 220 A

• Trip Class: 10 (standard protection response time)

• Control Voltage: Independent of motor power line

• Reset Options: Manual or Automatic

• Auxiliary Contacts: 1 NO + 1 NC

• Compatible Contactors: TeSys LC1F range

• Conformity: IEC 60947-4-1 / IEC 60947-1

Applications:

• Industrial Pumps and Fans

• Large Compressors and Conveyors

• Heavy Machinery in Manufacturing

• Mining and Oil & Gas Facilities

• Water Treatment and HVAC Systems

• Motor Control Centers (MCCs)

Benefits:

• Enhanced Accuracy: Electronic detection minimizes false trips and enhances motor protection

• Versatile Integration: Designed to fit seamlessly with Schneider TeSys contactors

• Efficient Troubleshooting: Built-in indicators and test functions reduce maintenance time

• Flexible Installation: Supports multiple reset and wiring configurations

• Long-Term Reliability: Built to handle high current and tough industrial environments