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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RF3405-1BB04 |
| Manufacturer | Siemens |
| Product Type | Solid State Contactor |
| Poles | 3 Pole |
| Configuration | 3P-2NO |
| Operating Voltage | 48 to 480 V AC |
| Current Rating | 5.2 A |
| Power Rating | 2.2 kW |
| Control Supply Voltage | 24 V DC |
| Control Type | Two-phase controlled |
| Switching | Instantaneous |
| Terminal Type | Screw terminal |
| Insulation Voltage | Rated at 600 V |
| Protection Class | IP20 |
| Shock Resistance | 15g / 11 ms according to IEC 60068-2-27 |
| Vibration Resistance | 2g according to IEC 60068-2-6 |
| Ambient Operating Temperature | -25 to +60 °C |
| Storage Temperature | -55 to +80 °C |
| Electromagnetic Compatibility | Conducted and radiated interference within industrial environment standards |
| Surge Voltage Resistance | Rated at 6 kV for main circuit |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail |
| Mounting Position | Vertical |
| Dimensions (H x W x D) | 95 mm x 45 mm x 100.8 mm |
| Required Spacing | Upwards: 70 mm, Downwards: 50 mm for side-by-side mounting |
| Conductor Cross-section | Main contacts: Solid (2x 1.5...2.5 mm², 2x 2.5...6 mm²), Stranded (1x 10 mm²) |
| Tightening Torque | Main contacts: 2...2.5 N·m, Auxiliary and control contacts: 0.5...0.6 N·m |
| Certifications | CE, UL, CSA, CCC, C-Tick (RCM) |
The Siemens 3RF3405-1BB04 is a robust solid state contactor designed for seamless integration into various industrial applications. This three-pole device features two normally open (NO) contacts and is engineered to handle operating voltages ranging from 48 to 480 V at both 50 and 60 Hz, making it versatile for global use. With an operational current of 5.2 A at AC-3 at 400 V and a rated operating power of 2.2 kW, it is suitable for managing moderate power loads in a compact form factor.
The contactor is two-phase controlled and offers instantaneous switching, ensuring minimal delay in operations. It is designed for vertical mounting and can be easily installed onto a standard 35 mm mounting rail, with provisions for side-by-side mounting to optimise space within control cabinets. The unit's dimensions are 95 mm in height, 45 mm in width, and 100.8 mm in depth, requiring minimal space while providing maximum functionality.
For the control circuit, the contactor utilises a DC control supply voltage with a rated value of 24 V. It has a symmetrical line frequency tolerance of 5 Hz and an operating range factor for the control supply voltage rated value at DC between 0.63 and 1.25. The control current at the DC rated value is 15 mA, ensuring reliable operation.
The contactor is equipped with screw-type terminals for both the main current circuit and auxiliary and control circuit, accommodating a range of conductor cross-sections for flexible installation options. The device is designed with a focus on durability and reliability, featuring a surge current resistance rated value of 200 A and an I2t value maximum of 200 A²·s.
This solid state contactor is an excellent choice for those seeking a dependable solution for controlling power circuits in industrial environments, offering both performance and ease of use.
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Frequently Asked Questions
What type of switching does this solid state contactor use?
The Siemens solid state contactor utilises instantaneous switching, providing quick response times for controlling power to your equipment.
Can this contactor be mounted onto a standard mounting rail?
Yes, it is designed for screw and snap-on mounting onto a 35 mm standard mounting rail, allowing for easy installation in your control cabinet.
What is the rated insulation voltage for this contactor?
The rated insulation voltage for this contactor is 600 V, ensuring it can handle the electrical demands of industrial environments.
What is the operating voltage range for this contactor?
The operating voltage range for this contactor is 48 to 480 V at both 50 Hz and 60 Hz, making it versatile for various applications.
What are the ambient temperature limits for operating this contactor?
The contactor can operate within an ambient temperature range of -25 to +60 °C, and can be stored in temperatures ranging from -55 to +80 °C.
What is the control supply voltage required for this contactor?
The control supply voltage required is 24 V DC, with an initial value for signal detection at 15 V and a full-scale value for signal recognition at 5 V.
What are the dimensions of this contactor?
The dimensions are 95 mm in height, 45 mm in width, and 100.8 mm in depth, compact enough for efficient use of space in electrical setups.
Is there any derating in temperature to consider for this contactor?
Yes, there is a derating temperature of 40 °C to consider when operating this contactor to ensure optimal performance.
What type of terminals does this contactor have for electrical connections?
It features screw-type terminals for both the main current circuit and the auxiliary and control current circuit, facilitating secure connections.
How does this contactor handle electromagnetic compatibility?
The contactor is designed to handle various types of electromagnetic interference, including bursts, surges, and high-frequency radiation, adhering to industrial environment standards.
