The Siemens 3RA2120-1HA24-0BB4 is a robust and reliable load feeder designed for direct-on-line starting applications. This fuseless unit is engineered to facilitate the seamless operation of three-phase motors, ensuring efficient power management in a variety of industrial settings. With a size S0 footprint, it is compact and suitable for rail-mounting, making it an ideal choice for space-conscious installations.
Crafted for durability, the 3RA2120-1HA24-0BB4 boasts an impressive mechanical service life, capable of withstanding millions of switching cycles. It features a three-pole design for the main current circuit and offers short circuit protection, overload protection, and phase disturbance recognition, enhancing the safety and reliability of your electrical systems.
The unit operates with a control supply voltage of DC 24V and has screw-type terminals for secure and straightforward connections. It is designed to handle operating voltages up to 690V and can manage operating currents at AC-3 up to 6.5A, with an operating power at 400V rated value of 3,000W.
This load feeder is also equipped with a thermal (bimetallic) overload release with an adjustable pick-up value current, ensuring protection against overloads. The trip class is CLASS 10, providing a quick response to prevent motor damage. The device is also designed to work within a wide range of ambient temperatures, from as low as -20°C to as high as +60°C, making it versatile for various working environments.
The Siemens 3RA2120-1HA24-0BB4 is a testament to Siemens' commitment to quality, offering a reliable solution for direct-on-line motor starting applications across a spectrum of industries.