Siemens 3TX4 440-0A Auxiliary Contact Block 4 NO

Siemens 3TX4404-0A auxiliary contact block adds four normally open contacts to a compatible contactor relay in the Siemens 3TX4 family. It mounts on the front of the relay with screw terminals for wiring and is specified for EN 50011 contactor relays, with an identification number of 44E. The block provides four NO auxiliary contacts, rated up to 10 A for AC-12 circuits (with common ratings cited at 24 V and 230 V), and insulation up to 690 V with a 6 kV surge rating. It supports a mechanical life of about 10,000,000 switching cycles and an IP20 protection level on the front, suitable for typical industrial environments with operating temperatures from -25 to +55 C. This accessory is designed to extend signaling and feedback capabilities in motor-control panels, interlocking, alarms, or remote monitoring by adding four independent NO contacts to a compatible Siemens contactor relay.