It mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, with ±180° rotation and ±22.5° tilt on vertical surfaces, giving panel builders flexibility in tight enclosures.
The coil is rated 20-33 VDC with a 6.5 A inrush peak and a holding power of 3.5 VA at both 50 and 60 Hz. That inrush matters for DC-supply sizing — expect a brief 6.5 A spike on pickup, then settle to the VA draw. Switching rates vary by duty: AC-3 (motor start/run) allows up to 1,000 operations/hour, AC-1 (resistive) 900/h, AC-2 (slip-ring) 400/h, and AC-4 (plugging/inching) 300/h. For high-cycle motor switching, the AC-3 rate is the one to watch.
Main contacts accept solid wire 2.5-16 mm² or stranded 6-70 mm²; auxiliary terminals take 2x (0.5-1.5 mm²) or 2x (0.75-2.5 mm²). All connections are screw-type terminals — no special tooling needed, but torque to spec for the wire range used.
No official successor has been issued, so this remains the direct fit for any panel specified with the 3RT2045-1NB30.