The Siemens 3SU1400-1AA10-3CA0 is a contact block from the SIRIUS ACT (3SU1) series, providing 1 normally closed (NC) break contact with spring-type (cage clamp) terminals for 22mm panel-mounted pushbuttons, selector switches, and indicator lights. With rated operational current up to 10A at voltages up to 500V AC/DC, mechanical life exceeding 10 million operations, and front plate mounting, this contact block is suitable for demanding industrial control panel applications. The IP66/IP67/IP69K front protection (with appropriate actuator) ensures reliable operation in harsh environments including washdown areas. Typical applications include emergency stop circuits, start/stop control stations, machinery control panels, and process automation interfaces.
**Q: Can the 3SU1400-1AA10-3CA0 be used with any SIRIUS ACT actuator?**
A: Yes, this contact block is compatible with all SIRIUS ACT (3SU1 series) 22mm pushbuttons, selector switches, mushroom buttons, and illuminated actuators with front plate mounting.
**Q: What is the difference between 1CA0 and 3CA0 variants?**
A: The "1CA0" uses screw terminals while "3CA0" uses spring-type (cage clamp) terminals. Both are 1NC contact configuration.
**Q: How many contact blocks can be stacked on one actuator?**
A: SIRIUS ACT actuators can typically accommodate up to 3 contact blocks stacked, depending on the actuator type and whether an LED module is also installed.
