What it is and where it fits
The Siemens 3RT1016-1BE42 is a SIRIUS power contactor in frame size S00, designed for switching motor loads in control panels. It mounts via screw or snap-on onto a 35 mm DIN rail per EN 50022, so it integrates directly into a standard panel layout without adapters. The 24 VDC coil draws 3.3 W for both closing and holding, which is a single-wattage coil — no separate hold-in power drop. That simplifies the DC supply sizing in the panel: budget 3.3 W continuous per contactor.
Key ratings and what they mean for your load
Rated at 10 A for AC-12 duty (resistive loads) and 8.5 A for AC-4 duty (plugging/inching of motors) at 400 V, this contactor handles frequent switching of motor loads up to 4.5 kW at 500 V and 5.5 kW at 690 V. The AC-4 rating is the one that matters for reversing or jogging applications — it's the punishing duty cycle, and 8.5 A at 400 V is the limit for that. The auxiliary contact ratings cover 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, so the same contactor can switch both the motor power and a control signal without a separate auxiliary block for many applications. Operating temperature range is -25 to +60 °C, with a maximum operating altitude of 2 000 m. Pollution degree 3 means it's rated for industrial environments with conductive pollution — typical for an unsealed panel.
Wiring and mounting details
Screw-type terminals on the main circuit accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) — or AWG equivalents 2x (20 to 16), 2x (18 to 14), and 1x 12. That covers most panel wiring from signal-level up to 4 mm² power feeds. Dimensions are 45 mm wide, 57.5 mm high, and 72 mm deep — the S00 footprint. Side-by-side mounting is allowed with 6 mm spacing at the side, so you can pack multiple contactors on the rail without derating. Front protection is IP20, which means finger-safe but not sealed against dust or water — standard for inside a cabinet.
Sourcing and lifecycle
For a BOM line that needs this exact order code, the fit is confirmed by the frame size S00, 24 VDC coil, and screw terminals. The AC-3 and AC-4 ratings above let you verify it matches your motor load without guessing.