What it is and what it does
The Siemens SIRIUS 3RT5064-6AM36 is a size S10 power contactor rated for main circuit switching with a rated insulation voltage of 1000 V. It handles motor loads up to 82 kW at 690 V and can deliver 164 kW at 400 V when the ambient temperature reaches 60 °C — the derating curve is built into the 60 °C rating, so you don't need to calculate a separate factor for warm panels. The contactor is screw-fixed to the mounting surface, supports side-by-side mounting for dense panel layouts, and accepts wiring up to 150 mm² at 40 °C or 120 mm² at 60 °C. The built-in varistor surge suppressor handles coil transients without an external module.
Key ratings and what they mean for fit
The 1000 V insulation voltage (rated impulse withstand voltage) means this contactor is suited for 690 V line-to-line systems with adequate clearance — it's not just a 400 V part pushed higher. The AC-3e maximum operating voltage of 1000 V confirms it can switch motor loads on 690 V networks without exceeding the coil or main contact ratings. The 82 kW at 690 V rating is the headline motor-switching figure, but the 164 kW at 400 V and 60 °C is the one that matters for a 400 V panel running hot — it tells you the contactor can deliver full rated power even when the enclosure ambient climbs. The 94 kW at 230 V and 60 °C covers lower-voltage applications without derating. Mechanical life is 10 million operations typical; electrical life varies by duty cycle. The switching frequency limits are 2000 cycles per hour for AC and DC general use, 750 for AC-1 resistive loads, 500 for AC-3 motor starting, and 130 for AC-4 plugging/reversing — the AC-4 figure is the one that governs inching or jogging applications.
Where it goes and how it mounts
This is a panel-mount contactor, not a DIN-rail snap-on. Screw fixing to a vertical surface is the intended method, with ±90° rotation and ±22.5° tilt front-to-back allowed — so you can orient it for cable entry without violating the mounting spec. Side-by-side mounting is permitted, which saves width in multi-contactor motor control centres. The 145 mm width, 210 mm height, and 202 mm depth mean it occupies a standard S10 footprint. If you're replacing an older S10 contactor, the mounting hole pattern and terminal positions should align without panel rework.
Lifecycle and sourcing reality
For a BOM line that needs this exact code, the supply posture is straightforward: it's a standard catalogue part, quoted to order against an RFQ. No broker or surplus channel required unless lead-time compression demands it.
Compliance and documentation
The substance prohibitance date of 03/01/2017 aligns with RoHS and REACH compliance milestones — the contactor meets the EU RoHS exemption sunset for certain materials. Pollution degree 3 (conductive pollution, or dry non-conductive that becomes conductive with condensation) is the rated environment, which covers most industrial control panels without additional conformal coating.