SGR2-D

SGR2-D Series Thermal Relays act as a key protection component in electrical systems, designed to counteract overheating caused by sustained overload currents or phase imbalances in motor and power systems. Their core function utilizes thermal-sensing and tripping mechanisms to trigger circuit disconnection within specified timeframes, relying on current-induced heat to activate the trip indicator, ensuring timely response to abnormal current conditions to protect equipment .

Complies with IEC60947-4-1 and has TUV approval.
Equipped with trip indicator for clear signalling.
Wide ambient temperature range of -5 to +40℃.
Direct mounting under contactor for easy setup.
Various models with broad current ranges for flexible use.

Product
Description

SGR2-D Series Thermal Relays offer Class 10A tripping with current setting ranges varying by type, compatible with SGC1-D contactors. Compliant with IEC 60947-4-1 and TUV approved, they feature a trip indicator and IP20 protection. Operating in -5℃ to +40℃ ambient temperature with max 95% humidity and V1 flame resistance, they support direct mounting under contactors. These relays safeguard motor and power systems against overloads and phase imbalances, suitable for use in various electrical setups .

To ensure long-term stable operation, systematic periodic maintenance is required: Monthly check the trip indicator to confirm its normal signaling and ensure the ambient temperature is within -5℃ to +40℃. Quarterly clean the device with dry tools to maintain its IP20 protection level and inspect for any damage that may affect flame resistance. Annually verify the tightness of connections according to the specified 0.8N.m torque, check insulation properties to align with rated standards, and calibrate the environment within the suitable range. Replace with OEM parts immediately if there is obvious damage affecting performance. No disassembly by non-professionals. Record maintenance data and replacement dates for consistent performance.