3RA21201FA240BB4
Siemens SIRIUS 3RA2120-1FA24-0BB4, S0 frame fuseless direct starter assembly, adjustable current 3.5...5 A, suitable for 1.5 kW three-phase motors, DC 24V control voltage, screw terminals, Class 2 fit, Iq 150kA, supplied by Kenxin Motor Company.
Product Positioning
The 3RA2120-1FA24-0BB4 is a Siemens SIRIUS series S0 frame fuseless direct starter assembly that integrates a circuit breaker and a contactor into a single mechanism. It has an adjustable current range of 3.5...5 A and is suitable for direct starting applications of 1.5 kW three-phase motors.
Core Product Advantages and Features
Integrated design of circuit breaker and contactor
Integrating current-limiting circuit breakers and contactors into the same combination mechanism saves control panel wiring and installation space.
CLASS 10 overload protection features
Built-in thermal overload release provides CLASS 10 operating characteristics, protecting the motor from overload damage.
DC 24V control voltage
The coil control voltage is DC 24V, which is convenient to match the power supply specifications of the existing control circuit on site.
High short-circuit withstand capability
According to IEC 60947-4-1 standard, the rated short-circuit current Iq reaches 150,000A and meets the Class 2 coordination level.
Adjustable current range 3.5...5 A
The overload protection setting can be adjusted within the range of 3.5...5 A to accurately match the actual rated current of the motor.