Siemens 3RT1045-1AL26 SIRIUS Power Contactor — Size S3, 45 kW at 500 V
The Siemens 3RT1045-1AL26 is a SIRIUS power contactor in size S3, rated for 45 kW at 500 V and 21.1 kW at 690 V. Front protection is IP20 with cover or box terminal; the terminal itself is IP00. Pollution degree 3 rated, operating temperature range -25 to +60 °C, storage -55 to +80 °C.
Duty Ratings and Switching Life
The 3RT1045-1AL26 is rated for AC-3 duty at 1 000 operations per hour and AC-4 at 300 operations per hour. AC-1 resistive load maximum is 900 operations per hour. Typical mechanical life is 10 000 000 operations. Coil operating range at 50 Hz is 0.8 to 1.1 times rated voltage, at 60 Hz 0.85 to 1.1.
Auxiliary contacts are rated 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, and 3 A at 400 V. Power dissipation at 1000 V is 37 W.
Solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max. 2x (0.75 to 4 mm²). Stranded conductors: 2x (10 to 50 mm²). Solid or stranded: 2x (2.5 to 16 mm²). Dimensions: depth 139 mm, width 90 mm, height 146 mm.