Schneider Electric B6.25 Thermal Overload Relay

The Schneider Electric B6.25 Thermal Overload Relay Heater Element Unit is a calibrated plug-in heater element for Square D overload relay bases, providing motor overload protection through a time-delay thermal trip driven by a bimetal element. It supports a full-load current range of 3.98–4.89 A and a Class 20 trip rating, triggering when current exceeds the calibrated range over time. Compatible with Square D Type B / Class 9065 overload relay systems, it is designed for industrial motor control centers and MCC assemblies in applications such as conveyors, pumps, compressors, and HVAC equipment. Common replacements include Square D B6.90 Thermal Heater Element, Schneider Electric LRD Series Thermal Units, and Siemens 3RU11 Thermal Overload Heater Elements.