What it is and what it does
The Siemens 3RT1016-1AP01-ZX95 is a SIRIUS power contactor in the compact S00 frame size, designed for switching motor loads and resistive loads in industrial control panels. Its 45 mm width fits standard DIN-rail layouts, and the screw-type terminals on the main circuit accept conductors from 2x (0.5... 1.5 mm²) up to 2x (0.75... 4 mm²) solid or stranded, with AWG equivalents of 2x (20... 16) through 1x 12. Rated for AC-3 duty at 4.5 kW at 500 V and 5.5 kW at 690 V, this contactor handles three-phase motor switching up to those power levels. The AC-4 rating of 8.5 A at 400 V covers reversing or inching applications where the contactor makes and breaks the motor at full current.
Key ratings and what they mean for fit
The 30 million typical mechanical cycles means this contactor is built for high-duty-cycle applications like conveyor lines or pump stations where the contactor cycles frequently. Pollution degree 3 qualifies it for use in industrial environments with conductive dust or moisture — typical for unsealed panels near production floors. Operating temperature range of -25 °C to +60 °C covers most plant-floor conditions, including unheated warehouses. The IP20 rating on the front and terminals means it needs a panel enclosure for dust and touch protection — standard for a DIN-rail component inside a cabinet. Type 2 coordination requires a 20 A gL/gG fuse — this limits fault energy so the contactor remains usable after a short circuit. Type 1 coordination uses a 35 A gL/gG fuse but the contactor may need replacement after a fault. The choice depends on your panel's selectivity and maintenance strategy.
Mounting and integration
Mounts via screw or snap-on onto a 35 mm DIN rail per DIN EN 50022. Side-by-side mounting is allowed with 6 mm spacing at the side, so you can pack multiple contactors in a row without derating — useful for multi-motor control panels. The S00 frame size (45 × 57.5 × 72 mm) is the smallest in the SIRIUS contactor family, saving panel space while still handling up to 5.5 kW at 690 V. The 72 mm depth fits standard 100 mm deep enclosures with room for wiring.
Lifecycle and sourcing reality
The -ZX95 suffix indicates a special version — verify the specific coil voltage and auxiliary contact configuration against your BOM before committing. The base ratings (5.5 kW at 690 V AC-3, 30 million cycles) are the same as the standard 3RT1016 family.