Schneider Electric LR9G225C TeSys Giga Electronic Thermal Overload Relay – 57…225 A, Class 5E–30E, 24…500 V AC/DC Control

Product Description

The Schneider Electric LR9G225C is an electronic thermal overload relay from the TeSys Giga range, designed for advanced motor protection in industrial applications. It offers a wide thermal protection adjustment range of 57…225 A with selectable trip class 5E, 10E, 20E, or 30E according to IEC 60947-4-1, accommodating diverse motor starting profiles. The relay provides comprehensive built-in protections including ground fault, phase imbalance, phase failure, and single-phase load protection, with adjustable tripping times for alarm circuits. It supports independent mounting or direct assembly onto TeSys Giga contactors LC1G115 to LC1G225 without additional accessories. The control circuit accepts 24…500 V AC or 24…250 V DC, and the rated operational voltage reaches 1000 V AC. With 1 NO + 1 NC auxiliary contacts, LED trip indication, and manual or automatic reset options, the LR9G225C delivers precise, reliable motor protection for demanding industrial and infrastructure applications.

Standard Features

• Wide 57…225 A Thermal Range: Single relay covers a broad current span, reducing inventory requirements and simplifying selection for motors across this power range.
• Selectable Trip Class 5E–30E: User-selectable trip class (5E, 10E, 20E, 30E) according to IEC 60947-4-1 adapts protection to normal, heavy, or severe starting duty.
• Comprehensive Built-in Protections: Integrated ground fault protection (0…1 s adjustable), phase imbalance protection (0…5 s adjustable), phase failure, and single-phase load protection for complete motor safeguarding.
• Direct Mounting on LC1G115–225 Contactors: Assembles directly onto TeSys Giga contactors LC1G115 to LC1G225 without additional fixing accessories, forming a compact starter assembly.
• Wide Control Voltage Range: Control circuit accepts 24…500 V AC at 50/60 Hz or 24…250 V DC, eliminating the need for separate coil voltage variants.
• LED Trip Indication and Reset Options: Mechanical trip indicator shows the cause of fault (overload, ground fault, imbalance, or phase loss), with manual or automatic reset selectable.
• Electronic Thermal Memory: Thermal memory and compensation ensure accurate protection after repeated overloads and across ambient temperature variations.

Technical Specifications