The 3RT2024-1NP30: The coil draws an inrush current peak of 25 A, then holds at 0.51 VA (50 Hz) or 0.56 VA (60 Hz) — the pickup power is 1.1 times the full-scale value, so the control transformer must be sized for the inrush, not the holding VA. The contactor is rated for 1,000 switching cycles per hour under AC-1, AC-2, AC-3, and AC-3e duty, but drops to 300 cycles/h under AC-4 (plugging/reversing) — if your application involves frequent inching or reversing, the AC-4 limit governs service life.
Dimensions, wiring, and clearances
Main contacts accept solid or stranded conductors from 1 to 10 mm²; the auxiliary switch accepts dual conductors: 2x (0.5-1.5 mm²) or 2x (0.75-2.5 mm²). The main contact screws are size 16-8 (M3.5 or M4 depending on variant).
Environmental limits and auxiliary contact ratings
The built-in auxiliary switch is rated 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V (all AC or DC? — the evidence lists these as 'at X V rated value' without specifying AC/DC, so treat them as the manufacturer's stated maximums for the respective voltage). Mechanical life is typically 10 million operations.