Industrial ZB12-10 Thermal Overload Relay 6-10A

The Klockner Moeller ZB12-10 Thermal Overload Relay is an electromechanical motor protection device designed to provide overload and phase‑loss protection for three‑phase motors in industrial control and starter systems. It mounts directly to Moeller DILM7, DILM9, DILM12, and DILM15 contactors for compact motor starter assemblies in conveyors, pumps, compressors, HVAC equipment, and manufacturing machinery. Key specs include an adjustable current range of 6 to 10 A, 3 poles, and 1 NO plus 1 NC auxiliary contact, with a manual or automatic reset and a trip class of 10A. Rated up to 690 VAC and IP20, it uses screw terminals and measures 67 × 45 × 88 mm, weighing 0.145 kg. The relay carries UL, CSA, CE, and VDE certifications and complies with IEC/EN 60947 standards (including IEC/EN 60947-4-1, UL 60947-4-1, CSA-C22.2 No. 60947-4-1-14). This model is favored in motor control centers, conveyor lines, pumping stations, and other equipment requiring reliable overload and phase‑failure protection to minimize downtime. For retrofit or replacement, it is commonly listed as compatible with Eaton XTOB010BC1, as well as ABB TA25‑DU12 and Siemens 3RU1126‑1JB0 equivalents.