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Specification & Description
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.
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Frequently Asked Questions
What is the purpose of this load feeder?
The load feeder is designed for fuseless direct-on-line starting, providing a compact and efficient solution for controlling motors in industrial applications.
Can this device be used for short circuit protection?
Yes, the load feeder includes short circuit protection as one of its functions, enhancing the safety and reliability of your motor control system.
Is there overload protection included with this load feeder?
Absolutely, the load feeder comes with an integrated overload protection feature to prevent damage to the motor due to excessive current.
Does this load feeder recognise phase disturbances?
Yes, it has the capability to recognise phase disturbances, which helps in maintaining the stability and performance of the motor.
What type of display does the load feeder have for switching status?
The load feeder features a switch setting display for clear and immediate indication of the switching status.
What is the insulation voltage rating for this load feeder?
The load feeder is rated for an insulation voltage of 690V with a degree of pollution 3, ensuring it can handle industrial voltage levels safely.
What level of impulse voltage resistance does this load feeder have?
The load feeder is designed to resist impulse voltages up to 6kV, providing robust protection against voltage spikes.
What is the protection class for the front of the load feeder?
The front of the load feeder is rated at IP20, offering protection against solid objects larger than 12mm and not against water.
Is the load feeder protected against electrical shock?
Yes, it is designed to be finger-safe, providing protection against electrical shock during normal handling and operation.
Can auxiliary switches be added to this load feeder?
Yes, the load feeder allows for the extension with auxiliary switches, enabling additional control and monitoring capabilities.
