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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT2024-2FB40 |
| Alternative Part Number | 3RT20242FB40 |
| Manufacturer | Siemens |
| Product Type | Power Contactor |
| Contactor Size | S0 |
| Auxiliary Switch | Yes (1NO+1NC) |
| Communication Module | No |
| Protection Class IP (Front) | IP20 |
| Degree of Pollution | 3 |
| Installation Altitude | Up to 2,000 metres above sea level |
| Ambient Temperature (Operating) | -25°C to +60°C |
| Ambient Temperature (Storage) | -55°C to +80°C |
| Shock Resistance (Rectangular Impulse) | 10g / 5 ms, 7.5g / 10 ms (DC) |
| Shock Resistance (Sine Pulse) | 15g / 5 ms, 10g / 10 ms (DC) |
| Impulse Voltage Resistance | 6 kV |
| Insulation Voltage | 690 V |
| Operational Current (AC-3, 400V) | 12 A |
| Operational Current (AC-1, 400V) | 40 A |
| Service Power (AC-3, 400V) | 5.5 kW |
| Service Power (AC-1, 400V) | 23 kW |
| Coil Voltage | DC 24V with integrated diode |
| Mechanical Service Life | 10 million switching cycles for contactor, 5 million with auxiliary switch block |
| Electrical Connection | Spring-loaded terminals for main and auxiliary circuits |
| Mounting | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715 |
| Dimensions (H x W x D) | 102 mm x 45 mm x 107 mm |
| Required Spacing | Forward: 10 mm, Upward: 10 mm, Downward: 10 mm, Side: 0 mm (for side-by-side mounting) |
| Conductor Cross-section (Main Contacts) | Solid: 1-10 mm², Stranded: 1-10 mm², Finely Stranded with/without core end processing: 1-6 mm² |
| Conductor Cross-section (Auxiliary Contacts) | Solid or Stranded: 0.5-2.5 mm², Finely Stranded with/without core end processing: 0.5-1.5 mm² |
The Siemens 3RT2024-2FB40 is a robust power contactor designed to handle high switching frequencies and is suitable for a wide range of industrial applications. This contactor is part of the SIRIUS product family and is engineered to facilitate efficient and reliable switching of motors. It is capable of controlling motors with a power rating of up to 5.5 kW at 400 V in AC-3 usage categories, making it a versatile choice for various automation tasks.
Constructed with a size S0 footprint, the 3RT2024-2FB40 includes an integrated diode and offers a spring-loaded terminal connection for secure and maintenance-free wiring. It features 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, enhancing its functionality for complex control circuits.
The contactor is rated for an insulation voltage of 690 V and has an impulse voltage resistance of 6 kV, ensuring it can withstand challenging electrical environments. With an operational temperature range of -25 to +60 degrees Celsius and a storage temperature range of -55 to +80 degrees Celsius, it is built to perform reliably in a variety of climatic conditions.
The device is designed with user safety in mind, boasting a finger-safe protection class of IP20 and a pollution degree of 3, which safeguards against electrical shocks and contaminants. The mechanical service life of the contactor is impressive, with up to 10 million switching cycles, indicating a long-lasting and durable performance.
The 3RT2024-2FB40 is also equipped with shock resistance features to endure the rigours of industrial environments, including resistance to both rectangular and sine pulse shocks. Its compact dimensions allow for efficient use of space within control cabinets, and it can be mounted on a standard 35 mm DIN rail for ease of installation.
Overall, the Siemens 3RT2024-2FB40 power contactor is a reliable and efficient solution for controlling motors and other electrical loads in industrial automation systems. Its robust design and comprehensive features make it a valuable component for engineers and technicians looking to optimise their control systems.
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Frequently Asked Questions
What is the function of this power contactor?
The power contactor is designed to control the flow of electricity to industrial motors and loads, providing safe and efficient switching for high-power circuits.
Can this contactor be used for three-phase motor applications?
Yes, it is suitable for controlling three-phase motors and is rated for various horsepower depending on the voltage level.
What are the voltage ratings for this contactor?
The contactor can handle operational currents at various AC and DC voltage levels, with insulation voltage rated at 690V.
What type of terminals does this contactor have?
It is equipped with spring-loaded terminals for both the main current circuit and the auxiliary and control current circuit.
What is the size of the contactor?
The contactor is of size S0, with specific dimensions for height, width, and depth provided in the datasheet.
Is there any specific mounting position for this contactor?
The contactor allows for a +/-180° rotation on a vertical mounting surface and can be tilted forward and backward by +/- 22.5°.
What is the IP protection class of this contactor?
The contactor has an IP20 protection class on the front, ensuring a degree of protection against solid objects.
What is the operational life expectancy of this contactor?
The mechanical operating cycles of the contactor are typically around 10 million for the contactor itself and may vary when auxiliary switch blocks are added.
Does this contactor have any auxiliary contacts?
Yes, it comes with integrated auxiliary contacts, typically configured as 1NO+1NC (one normally open and one normally closed).
What certifications does this contactor hold?
The contactor has general product approvals and certifications, which can be found in the detailed product documentation.
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