CJX20910 is a 3pole AC contactor designed to switch and control AC loads with a 220V 50Hz coil. It features three main poles and a single normally open auxiliary contact, and it is rated for a main circuit current of 20A. The device is built for reliable performance in control and automation applications, with a rated insulation voltage Ui of 690V. Key benefits Enables safe and reliable switching of AC loads up to 20A in threephase circuits. Three main poles provide solid control for threephase applications. Includes one normally open auxiliary contact for signaling, interlocking, or feedback in control circuits. Coil operates on 220V AC at 50Hz, compatible with standard control systems. insulation rating (Ui) up to 690V supports voltage tolerance in industrial environments. Key attributes Model: CJX20910 Poles: 3 Main contacts: 3 no (implied for standard threepole operation) Auxiliary contacts: 1 normally open (NO) Coil voltage: 220V AC, 50Hz Coil type: AC Rated load current: 20A Rated insulation voltage (Ui): 690V Applications and use cases Threephase motor control: start and stop 3phase motors in small to medium machinery, conveyors, or fans. Pump and HVAC systems: control pumps or HVAC equipment in commercial or industrial settings with a simple, reliable switch. Automation panels and interlocking: use the auxiliary NO contact for control logic, feedback signals, or interlock circuits within electrical panels. Notes Ensure proper electrical ratings and wiring to match the 220V 50Hz coil and 690V insulation capability. Suitable for standard industrial control applications requiring a compact, reliable 3pole AC contactor with an auxiliary contact.