Allen-Bradley 815-D0V4 Thermal Overload Relay AC

The Allen-Bradley 815-D0V4 is a thermal overload relay (Bulletin 815) that protects AC motors by interrupting the control circuit during sustained overload, using inverse time protection and replaceable heater elements. It operates on systems up to 600 VAC, at 50/60 Hz, providing Class 20 protection with standard heater elements, with replaceable Type N or Type W heaters and a reset option that can be manual or automatic depending on configuration. Mounting style is NEMA Starter Mounting and it is an open-type industrial overload relay compatible with Allen-Bradley Bulletin 815 motor starters, commonly installed in motor control centers, pumps, conveyors, compressors, fans, and HVAC equipment; maintenance teams and system integrators use it for OEM replacement, motor starter repair, retrofit projects, and preventive maintenance of industrial motor control systems. Common replacements include Allen-Bradley 815-B0V4, 816-D0V4, and 592-D0V4.