Coil and switching ratings
The 3RT1016-1BB42: The DC coil draws 3.3 W during both closing and holding, so the control transformer or power supply must be sized for continuous 3.3 W draw per contactor. The coil pickup is rated at 0.85 x rated voltage (20.4 VDC minimum) and dropout at 1.1 x rated voltage (26.4 VDC) — ensure the control supply stays within this band for reliable operation. Switching capacity varies by duty: at AC-2 (400 V) the contactor is rated for 4 kW motor load; at AC-4 (400 V) the operational current is 8.5 A for reversing or inching duty. The maximum operational current in AC-12 (resistive) is 10 A. For DC switching, the contactor is rated at 24 V / 10 A, 60 V / 2 A, 110 V / 1 A, 220 V / 0.3 A, and 230 V / 6 A — the DC ratings drop sharply above 60 V, so verify the load type before specifying for DC circuits. Motor power ratings at AC-3 duty: 4.5 kW at 500 V, 5.5 kW at 690 V. For a 400 V line, the AC-3 rating is typically around 4 kW (derived from the 8.5 A AC-4 figure — AC-3 is usually higher). The contactor is also rated for 3 A at 400 V in unspecified duty, likely resistive or light inductive.
Mounting and integration
Mounts via screw or snap-on onto a 35 mm DIN rail per DIN EN 50022. The S00 frame occupies 45 mm width, 57.5 mm height, 72 mm depth — fits standard 45 mm-wide DIN-rail slots. Side-by-side mounting is permitted, so multiple contactors can be ganged without spacing. Main and auxiliary/control circuits use screw-type terminals. Wire capacity: solid or stranded 2x (0.5…1.5 mm²), 2x (0.75…2.5 mm²), max 2x (0.75…4 mm²) for main contacts; auxiliary contacts accept 2x (20…16 AWG), 2x (18…14 AWG), 1x 12 AWG. Strip length is not specified but standard for screw terminals is 8–10 mm. Degree of pollution 3 (industrial environment with conductive pollution). IP20 on the front and terminals — suitable for enclosed panel use, not for washdown or outdoor exposure.
Protection and coordination
For Type 2 coordination (no damage to contactor under short circuit), use a gL/gG fuse rated 20 A. For Type 1 coordination (contactor may need replacement after fault), use a 35 A gL/gG fuse. The contactor's own short-circuit withstand is not separately listed, but these fuse recommendations define the upstream protection. Operating temperature range -25 to +60 °C. The mechanical life is typical 30 million operations — this is the no-load mechanical endurance; electrical life depends on switching current and voltage.
Compliance and sourcing
RoHS compliance date is 01.07.2006, indicating the design meets the original RoHS directive. The reference code per IEC 81346-2 is Q (switching device). No UL or CSA listing is explicitly in the evidence, but the product is designed to IEC standards typical for European panels.