Siemens 3RH1122-2AP00-ZW97 — SIRIUS Auxiliary Contactor, Size S00
The 45 mm width and screw-and-snap-on mounting let it clip directly onto a DIN rail or bolt to a backplate, fitting standard panel layouts without extra brackets. The IP20 front protection means it is safe for finger contact inside an enclosed panel — standard for control-gear compartments.
Ratings and Switching Capacity
The 3RH1122-2AP00-ZW97 provides two instantaneous NO contacts and no leading, lagging, delayed, or make-before-break contacts. This is a straightforward 2-pole normally-open auxiliary contactor — no time-delay or overlapping switching built in. Its rated operational currents span the control-voltage range: 10 A at 24 V, 1 A at 110 V, 0.27 A at 220 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V (, –,). The 6 A at 230 V is the typical rating for a 230 V AC control circuit feeding a PLC input or relay coil. The 10 A at 24 V covers DC control loads at the common panel voltage. Rated surge voltage resistance is 6 kV, and the pollution degree is 3 — meaning it is suitable for industrial environments with conductive dust or condensation, not just clean dry locations. The mechanical life is typical 30 million operations, and contact reliability is specified as one incorrect switching operation per 100 million at 17 V, 1 mA — a solid figure for low-level signal switching.
Environmental and Mounting
Operating temperature range is -25 to +60 °C; storage and transport range is -55 to +80 °C. The mounting position is flexible: +/-180° rotation on a vertical surface, and can be tilted forward/backward by +/-22.5°. Shock resistance is 10g / 5 ms and 5g / 10 ms. Wire capacity for solid conductors is 2x (0.25... 2.5 mm²). The depth is 73 mm, height 60 mm, width 45 mm. This fits a standard 45 mm-wide DIN-rail slot — the same footprint as many S00 contactors and motor starters, so it drops into an existing panel layout without re-spacing.