Schneider LR9F7575 | TeSys LRF – electronic thermal overload relay – 200…330 A – class 20

Description

Schneider LR9F7575 | TeSys LRF – electronic thermal overload relay – 200…330 A – class 20

Schneider LR9F7575 | TeSys LRF – Electronic Thermal Overload Relay, 200–330 A, Class 20

The Schneider LR9F7575 is a high-performance electronic thermal overload relay from the TeSys LRF series. Designed for protection of large motors operating within a 200 to 330 A range, it features Class 20 tripping characteristics, making it ideal for motors with high inertia or long start-up times.

General Information:

• Brand: Schneider Electric

• Product Series: TeSys LRF

• Model: LR9F7575

• Device Type: Electronic Thermal Overload Relay

• Current Range: 200 to 330 A

• Trip Class: Class 20 (slower tripping – suited for high inertia motors)

Key Features:

• Wide Adjustable Current Range: 200–330 A

• Class 20 Tripping Curve: Ideal for motors with longer startup durations

• Electronic Sensing: More precise than traditional bimetallic relays

• Phase Failure Protection: Ensures motor safety in case of power imbalance

• Reset Options: Selectable automatic or manual reset

• Trip Indicator: Clear visual notification of faults

• Test Button: Enables functional testing during commissioning and maintenance

• Integrated Auxiliary Contacts: 1 NO + 1 NC for status signaling

• Mounting Compatibility: Designed to mount directly onto TeSys F series contactors

Technical Specifications:

• Current Adjustment Range: 200 A to 330 A

• Tripping Class: Class 20

• Reset Mode: Manual or Automatic

• Auxiliary Contacts: 1 NO + 1 NC

• Mounting Type: Direct mount (for LC1F contactors)

• Protection Degree: IP20 (device body)

• Compliance Standards: IEC 60947-4-1, IEC 60947-1

Applications:

• High inertia motor loads (e.g. conveyors, crushers, centrifuges)

• Industrial HVAC systems

• Pumps and fans with long acceleration periods

• Material handling equipment

• Large-scale manufacturing systems

• Mining and heavy-duty industrial applications

Benefits:

• Accurate Thermal Protection: Prevents overheating and long-term motor damage

• Reliable for High-Inertia Applications: Class 20 tripping ensures proper protection during extended startups

• Minimal Downtime: Fast fault diagnosis via LED indicators and test function

• Flexible Integration: Fits seamlessly with Schneider’s TeSys contactor systems

• Enhanced Motor Safety: Includes advanced phase-loss detection