Siemens 3RA6120-1CB33 Siemens

Product Overview The Siemens SIRIUS Compact load feeder direct-on-line (DOL) starter 3RA6120-1CB33 is part of the 3RA6 (3RA61) compact starter family. It is designed to control and protect three-phase induction motors by enabling direct line starting, providing interface for parallel wiring and auxiliary switching. The unit accepts 24 V AC/DC control voltage and supports motor current settings from 1 to 4 A. Typical uses include motor starting in control cabinets, conveyor systems, pump and fan applications in industrial automation environments. Best Suited For Control-cabinet motor starting Parallel starter installations Pump and fan motor control Conveyor system motor protection Control supply 24 V AC/DC Adjustable current range 1 … 4 A Short-circuit rating ICS 53 kA at 400 V Enclosure protection IP20 Mounting width 45 mm Technical Specifications I/O & Electrical Control voltage 24 V AC/DC Adjustable motor current 1 … 4 A Rated short-circuit current (ICS) 53 kA at 400 V Communication & Power Power loss (hot, AC) 1 W Power loss per pole 0.33 W No-load power loss (typical) 2.9 W Physical & Environmental Mounting width 45 mm IP rating IP20 Insulation voltage 690 V Surge voltage resistance 6 000 V Pollution degree 3 Mechanical service life (main contacts) 10 000 000 cycles Auxiliary contact endurance (AC-15, 6 A, 230 V) 200 000 cycles Auxiliary contact endurance (DC-13, 6 A, 24 V) 30 000 cycles Shock resistance 6 g, 10 ms, 3 shocks per axis Vibration resistance 4 … 5.8 Hz/15 mm; 5.8 … 500 Hz/20 m/s², 10 cycles Ambient operating temperature -20 … +60 °C Storage/transport temperature -55 … +80 °C Relative humidity (operation) 10 … 90 % Maximum installation altitude 2 000 m Weight 1.461 kg