Siemens 3RT1054-1SP36 SIRIUS Power Contactor
The Siemens 3RT1054-1SP36 is a SIRIUS power contactor in size S6, designed for switching motor loads and resistive loads in industrial control panels. It carries a 200-277 V AC coil and uses screw-type terminals for the coil connection. Rated for continuous operation in an ambient range of -25 to +60 °C, with storage capability from -55 to +80 °C. The contactor's MTBF is listed at 75 a, reflecting a design life suited for high-uptime production lines. The contactor mounts via screw fixing on a vertical surface, rotatable ±90° and tiltable ±22.5° front-to-back, giving panel builders flexibility in enclosure layout. Minimum clearances: 10 mm upward/downward/side, 20 mm forward.
Ratings and Switching Performance
Operational current ratings for the auxiliary contacts are specified at various voltages: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, and 0.9 A at 125 V. This covers typical control-circuit voltages in industrial installations. Switching frequency varies by duty: up to 750 cycles per hour for AC-1 (resistive) and AC-3 (motor starting) loads, 400 cycles/h for AC-2 (slip-ring motor), and 130 cycles/h for AC-4 (plugging/reversing). The arcing time is 10-15 ms, and the opening/closing times are 115-130 ms for both AC and DC. Power factor at rated load is 0.6 at both 50 Hz and 60 Hz. The contactor includes an auxiliary switch (built-in) and is rated for a mechanical life of 10 million operating cycles typical.
Wiring and Termination
Main power circuit accepts stranded conductors from 16 to 70 mm². Auxiliary and coil terminals accept solid or stranded wire: 2x (0.5-1.5 mm²), 2x (0.75-2.5 mm²), or max 2x (0.75-4 mm²). All terminals are screw-type. Dimensions: 120 mm wide, 170 mm deep, 172 mm high. The size S6 footprint fits standard DIN-rail or screw-fixed mounting in motor control centers.