Square D LRD3355 Thermal Overload Relay Telemecanique TeSys

Square D LRD3355 Thermal Overload Relay

The Square D LRD3355 is a thermal overload relay from the TeSys Deca series, designed to provide reliable motor protection. It offers an adjustable current range of 30 to 40 amperes and is calibrated to Class 10A standards, ensuring prompt response to overcurrent conditions.

Key Features

• Adjustable Current Range: 30 to 40 A, suitable for various motor applications.
• Tripping Class: Class 10A, providing quick response to overcurrent situations.
• Phase Failure Sensitivity: Detects phase loss, enhancing motor protection.
• Reset Options: Manual or automatic reset, selectable via a simple dial.
• Mounting Compatibility: Directly mounts onto TeSys D contactors, specifically models LC1D80 and LC1D95.
• Certifications: Complies with multiple international standards, including IEC, UL, CSA, CCC, EAC, ATEX, and Marine certifications.

Technical Specifications

• Rated Insulation Voltage: 1000 V AC for power circuits.
• Dielectric Strength: 2.2 kV at 50 Hz.
• IP Rating: IP20, conforming to IEC 60529.
• Operating Temperature: -20°C to +60°C without derating.
• Dimensions: Height: 81 mm, Width: 70 mm, Depth: 115 mm.
• Weight: 0.51 kg.

The LRD3355 is an essential component for safeguarding motors against overloads and phase failures, ensuring operational reliability and longevity.