The 45 mm width and 85 mm height, with 97 mm depth, fit the S0 footprint common across the SIRIUS 3RT2 line. Main contacts are configured as normally open, 3-pole, with a 16 to 8 contact sequence. The auxiliary switch is included on this variant — a 1 NO + 1 NC block, wired via screw-type terminals accepting 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded. That means you don't need to order a separate auxiliary block for basic status feedback.
Switching frequency and auxiliary contact ratings
Maximum switching frequency is 1,000 operating cycles per hour for AC-1, AC-2, AC-3, and AC-3e duty, dropping to 300 cycles per hour for AC-4 (plugging / inching). Auxiliary contact ratings are given at several control voltages: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, and 0.6 A at 440 V. Coil holding power is 0.25 VA at 50 Hz and 0.28 VA at 60 Hz. Arcing time is specified at 10 ms across the AC range of 4 to 16 ms — a narrow band that indicates consistent arc quenching behavior across the operating envelope.