The Siemens 3RH1140-1BB40-ZW95 is a SIRIUS auxiliary contactor in size S00, rated for a 24 V DC coil with a closing and holding power of 3.2 W. It carries 4 instantaneous NO contacts (leading contact 0, delayed switching 0, lagging switching 0), rated at 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. The contact reliability spec calls out one incorrect switching operation per 100 million operations at 17 V, 1 mA — a solid baseline for signal-level circuits.
Mounting and integration
Width is 45 mm, height 57.5 mm, depth 72 mm — fits standard DIN-rail enclosures with screw or snap-on mounting. Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward. The front carries IP20 protection; the terminal block accepts solid conductors: 2x (0.5…1.5 mm²), 2x (0.75…2.5 mm²), or 2x 4 mm² (AWG equivalents: 2x 20…16, 2x 18…14, 1x 12).
Environmental and lifecycle
Lifecycle status is current production. Operating temperature range is -25 to +60 °C; storage and transport range is -55 to +80 °C. Shock resistance is 10g / 5 ms and 5g / 10 ms. Surge voltage resistance is rated at 6 kV. Pollution degree 3. RoHS compliance date is 07/01/2006.