Siemens SIRIUS 3RT2027-1NP30 — Power Contactor, Size S0
The Siemens 3RT2027-1NP30 is a SIRIUS power contactor in the S0 frame size, designed for switching motor loads in control panels. It mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, with a width of 45 mm and depth of 107 mm — fitting standard panel layouts without overhang. The contactor includes an auxiliary switch and uses screw-type terminals for the magnet coil.
Ratings and What They Mean for Fit
The S0 frame size with 45 mm width means this contactor fits into compact DIN-rail arrays where space is tight — it occupies one standard modular device position. The 107 mm depth is shallow enough for most 200 mm deep enclosures without crowding the gland plate. Conductor cross-section accepts solid or stranded wire from 1 to 10 mm², covering common motor feeder sizes up to 4 mm² for control wiring and 6–10 mm² for power circuits. Operating temperature range of -25 to +60 °C covers most indoor panel environments without derating concerns.
Integration Notes
Mounting position allows ±180° rotation on a vertical surface and tilt up to ±22.5° forward/backward — useful when the contactor sits on a swing frame or angled subpanel. The auxiliary switch (included) provides one N/O + one N/C contact for feedback to a PLC or status indication; no separate auxiliary block purchase needed for basic interlocking. Coil terminals are screw-type, accepting 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded — common for 1.5 mm² control wiring in panel builds.