Klockner Moeller Z0-2,1-NA Thermal Overload Relay

The Klockner Moeller Z0-2,1-NA Thermal Overload Relay is a three-pole, electromechanical motor protection relay designed to mount directly to DIL0 and DILEM contactors (with DILEEM compatibility) to form compact motor starter assemblies. It provides overload protection, phase-failure protection, and current-imbalance protection for three-phase motors in industrial environments such as conveyors, pumps, compressors, HVAC equipment, and manufacturing machinery. Key specifications include MPN Z0-2,1-NA; Series Z0; adjustable current range 1.2–2.1 A; rated insulation voltage Ui 690 V; rated operational voltage Ue up to 660 VAC; Ith 16 A; tripping class 10A; auxiliary contacts 1 NO + 1 NC; reset function manual or automatic; mounting type direct mount to contactor; terminal type screw terminals; protection IP20; operating temperature range −25°C to +55°C; standards IEC/EN 60947-4-1, UL 508, CSA C22.2, VDE 0660; certifications CE, UL Listed, CSA Certified. It is commonly used in motor control centers, conveyor systems, pumping stations, compressors, fans, and manufacturing equipment to minimize downtime and extend equipment life. Common replacements include Siemens 3RU1116-1CB0.