Schneider Electric LR9F5371 Electronic Overload Relay
"*" indicates required fields
Schneider Electric LR9F5371 Electronic Overload Relay
The Schneider LR9F5371 is a high-performance electronic overload relay designed to provide advanced thermal protection for motors in demanding industrial applications. Part of the TeSys LR9F series, this relay integrates intelligent protection features, superior accuracy, and reliable performance, making it ideal for safeguarding motors against overload conditions, phase imbalance, and overheating.
Key Features and Specifications
-
Electronic thermal overload protection
Uses an advanced electronic sensing mechanism that delivers more precise and stable protection than traditional bimetallic relays. -
Adjustable current setting
Offers a wide adjustment range of 30–150 A, allowing flexible adaptation to various motor sizes and load conditions. -
Class 10A trip curve
Ensures quick response to overloads while maintaining stable operation for normal motor startup profiles. -
Phase failure and phase unbalance detection
Continuously monitors motor phases and triggers protection in case of loss or serious imbalance, helping prevent motor damage. -
Test and reset functions
Built-in TEST and RESET controls allow easy verification and manual reset of the relay. -
Trip indication
Clear visible indicators display trip status, simplifying maintenance and troubleshooting. -
Coordinated use with contactors
Designed to be paired with Schneider LC1F series contactors, ensuring optimal compatibility and high-performance motor control. -
Auxiliary contacts included
Equipped with integral 1 NO + 1 NC auxiliary contacts for signaling and interlocking purposes.
Benefits
-
High protection accuracy reduces risk of motor burnout
-
Faster response to abnormal operating conditions
-
Reduced nuisance tripping compared with mechanical relays
-
Easy adjustment and setup for different motor loads
-
Suitable for heavy-duty industrial environments
-
Improves motor lifespan and overall system reliability
Typical Applications
-
Industrial motors and pumps
-
HVAC systems and compressors
-
Conveyor drives and material-handling systems
-
Fans, blowers, and mixers
-
Manufacturing and processing machinery
-
Any application requiring reliable, accurate overload protection
About us
