Protecting AC circuits and motors from overloads, the Schneider Electric TeSys LR3D3557 thermal overload relay is engineered for reliable operation in demanding industrial environments. This device is a key component in ensuring the longevity and safety of electrical systems, commonly integrated into motor control centers and machinery protection panels.

Technical details

• Series: TeSys LR3D
• Type: Thermal Overload Relay
• Thermal Setting Range: 37A to 50A
• Phase: Three-phase
• Mounting: Direct mounting or separate mounting with accessories
• Reset Type: Manual and automatic reset
• Trip Class: Class 10 (typical for this series, verify with datasheet)
• Contact Configuration: 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts

Applications & compatibility

The Schneider TeSys LR3D3557 is designed for direct motor protection applications across various industries, including manufacturing, material handling, and water treatment. It is compatible with a wide range of AC induction motors and is often used in conjunction with TeSys D or TeSys Deca contactors for complete motor starter solutions.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider TeSys LR3D3557 or contact our technical team for cross-reference assistance with compatible TeSys components.