Schneider Electric 9065SEO12 Thermal Overload Relay

Schneider Electric's Square D 9065SEO12 thermal overload relay is a three-pole, manual-reset device with a melting-alloy trip element, designed to protect 3-phase motors in industrial control circuits up to 600 V. This Type S, NEMA Size 3 overload is a separate-mount unit rated for 86 A at 50/60 Hz and features a 600 V AC coil, making it suitable for panel-mount or open-enclosure installations with compatible contactors. The melting alloy trip mechanism provides fixed thermal protection, and the unit requires a manual reset after tripping. Dimensions are approximately 134.9 mm wide by 146.1 mm deep by 142.1 mm high, and the package is commonly used with matching 9065 series contactors to deliver reliable motor overload protection in 3-phase systems. Typical applications include protection of motors in fans, pumps, conveyors, and other industrial equipment where robust, resettable protection is required in 600 V networks.