What it is and what the ratings mean
The Siemens 3RT1016-2AP01 is a SIRIUS power contactor in the Size S00 frame — the smallest of the SIRIUS contactor family, meant for switching moderate motor loads and resistive circuits inside a control panel. Rated at 10 A for a 24 V coil, this contactor handles the holding current for a small motor starter or a lighting contactor duty. The 24 V control voltage is common across PLC-output and 24 VDC control buses, so it slots straight into a standard panel without a separate transformer for the coil. The spring-loaded terminals on both the main and auxiliary circuits accept solid or stranded wire from 0.25 to 2.5 mm² (2x per clamp), which covers the typical control and power wiring for a Size S00 contactor — no lug crimping, just strip and insert. Mounts via screw or snap-on onto a 35 mm DIN rail per DIN EN 50022, and side-by-side mounting is allowed — useful when you need to gang several contactors in a tight panel bay.
Where you'll find it in the panel
At 45 mm wide, 60 mm tall, and 73 mm deep, this contactor fits the standard DIN-rail footprint for Size S00. The depth is the dimension that matters when the gland plate or enclosure door is tight — 73 mm leaves room for the spring-clamp wiring and a finger-safe cover. IP20 on the front and at the terminals means it's protected against finger contact but not washdown — it lives inside a panel, not out on the plant floor in the splash zone. Operating temperature range of -25 to +60 °C covers most indoor panel environments, including a hot enclosure near a furnace line or a cold warehouse.
Lifecycle and sourcing reality
This part carries a lifecycle status of current production, so it's still a standard catalog item from Siemens. No last-time-buy or obsolescence notice is attached to this order code.