What it is and where it fits
The Siemens SIRIUS 3RT2023-1AP00-ZX95 is a Size S0 power contactor with screw-type terminals and an integrated auxiliary switch. It mounts on 35 mm DIN rail per DIN EN 60715 using either screws or the snap-on latch — standard for panel builds. The 45 mm width leaves room for adjacent motor starters or overload relays in a crowded enclosure.
Key ratings and what they mean for fit
This contactor is rated for 1 000 switching cycles per hour under AC-1, AC-2, AC-3, and AC-3e duty, and 300 cycles per hour under AC-4 — the heavier switching profile for plugging or inching applications. The operating temperature range of -25 to +60 °C covers most indoor panel environments; storage range extends to -55 to +80 °C, relevant for unheated warehouses or shipping. The contactor can be mounted on a vertical surface with ±180° rotation and ±22.5° tilt, giving flexibility in tight layouts.