What this SIRIUS auxiliary contactor delivers on the line
AC-12 rated at 10 A — that's the resistive load curve for control circuits, so it holds takt time on auxiliary contact switching without derating for typical PLC or relay coil loads. Three instantaneous contacts (NO/NC configurable) give you the flexibility to mirror status back to the controller or interlock downstream contactors without adding a separate relay bank. Mechanical life is spec'd at 30,000,000 operations typical — that's the kind of endurance you want when the line cycles every few seconds. Mounts via screw or snap-on to DIN rail, and the 45 mm width keeps the panel density tight.
Mounting and integration — checklist items
Screw and snap-on mounting onto standard DIN rail. Depth is 72 mm, width 45 mm, height 57.5 mm. Solid terminal capacity accepts 2x conductors from 0.5 to 1.5 mm², 2x from 0.75 to 2.5 mm², or 2x up to 4 mm² — spring-cage or screw terminals depending on variant; this unit supports both stranded and solid wire with ferrule. Pollution degree 3 (conductive pollution, typical for industrial panels) so no additional conformal coating needed for most environments. Shock resistance at 10g / 5 ms and 5g / 10 ms keeps it reliable on vibrating conveyor sections or press lines.
For compliance documentation: as a Siemens SIRIUS component, it meets CE, UL, CSA, and CCC requirements per the manufacturer's declarations. RoHS and REACH compliance is standard for this generation of SIRIUS hardware. Specific cert numbers are on the nameplate; we can provide the manufacturer's declaration of conformity with your order if your quality doc control requires it.
What the AC-12 rating means for your control circuit
The 10 A at AC-12 rating is the key figure for control engineers. AC-12 per IEC 60947-5-1 covers resistive loads and solid-state outputs — think PLC digital outputs, relay coils, solenoid valves, and indicator lamps. That 10 A is the maximum thermal current (Ith) for the contact block; it's not a motor-switching number. For inductive DC loads at 24 V, the rating drops to 10 A as well, but at 110 V DC it's 1 A, and at 220 V DC it's 0.27 A — so if you're switching DC solenoids at higher voltages, check the voltage-specific curve. AC-15 and DC-13 ratings (typical for solenoid and electromagnetic loads) are not listed in this spec set — if your circuit drives highly inductive loads like contactor coils without suppression, verify the switching capacity against the load's inrush. The 3 instantaneous contacts handle make/break simultaneously; there are no leading, lagging, or make-before-break contacts on this variant.