It is designed for control-circuit switching in motor starter assemblies and general panel logic where additional contact sets are needed beyond what the main contactor provides. Front protection is IP20. Switching capacity varies by voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V.
RoHS compliance date is 07/01/2006. The part carries the SIRIUS brand and is covered by Siemens standard documentation package including CE, UL, and CSA certifications per the series family.
Integration notes
Wire termination accepts solid conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or 2x 4 mm². The screw terminals are sized for standard control wiring up to 4 mm². Shock resistance rated at 10g for 5 ms and 5g for 10 ms, which is typical for panel-mounted control gear in machinery applications.
Contact configuration and switching behavior
The 3RH1140-1AD00-1AA0 provides 4 NO contacts with no leading, lagging, delayed, or make-before-break switching. All four contacts close and open simultaneously. The auxiliary switch extension option is available for adding more contact blocks. Coil data is not listed in this spec set; verify coil voltage against your control circuit. The contactor size S00 means this auxiliary block shares the same footprint as S00 power contactors for compact stacking.