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3RF2450-1AB45
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RF2450-1AB45 |
| Alternative Part Number | 3RF24501AB45 |
| Manufacturer | Siemens |
| Product Type | Solid-state contactor |
| Design | 3-phase, 2-phase controlled |
| Current Rating | 50 A |
| Operating Voltage Range | 48-600 V AC |
| Control Supply Voltage | 4-30 V DC |
| Blocking Voltage | 1200 V |
| Power Loss | 107 W (hot operating state) |
| Insulation Voltage | Rated at 600 V |
| Degree of Pollution | 3 |
| Protection Class IP | IP20 |
| Shock Resistance | 15g / 11 ms (acc. to IEC 60068-2-27) |
| Vibration Resistance | 2g (acc. to IEC 60068-2-6) |
| Operating Frequency | 50-60 Hz |
| Operating Temperature | -25 to +60 °C (operating), -55 to +80 °C (storage) |
| Mounting Type | Screw fixing |
| Side-by-Side Mounting | Yes |
| Dimensions (H x W x D) | 100 mm x 157.5 mm x 121 mm (height may vary with product version) |
| Terminal Type | Screw-type terminals |
| Conductor Cross-Section | Main contacts: solid (1.5-6 mm²), stranded (1-10 mm²); Control contacts: solid/stranded (0.5-2.5 mm²) |
| Tightening Torque | Main contacts: 2-2.5 N·m; Control contacts: 0.5-0.6 N·m |
| Wire Stripping Length | 7 mm for both main and control contacts |
| Installation Altitude | Up to 1000 m above sea level |
| Product Function | Zero-point switching |
The Siemens 3RF2450-1AB45 is a robust solid-state contactor designed for seamless integration into a wide range of industrial applications. This three-phase contactor is engineered to handle significant loads, with a capacity of 50 A at operating voltages ranging from 48 to 600 V AC, and a control voltage of 4-30 V DC. Its two-phase controlled operation ensures efficient power management and zero-point switching, which minimises electrical noise and wear on the system.
Constructed with durability in mind, the 3RF2450-1AB45 boasts a blocking voltage of 1200V and is capable of withstanding surge currents, ensuring reliable performance even under demanding conditions. The contactor's screw terminal connections provide a secure and reliable means of installation, while its compact design allows for efficient use of space within electrical cabinets.
The device operates effectively within a broad temperature range and is rated for use in environments with temperatures up to 40°C. Its IP20 protection class signifies that it is protected against solid objects larger than 12mm, although it should be housed in an enclosure for optimal protection and performance.
With its solid-state design, the 3RF2450-1AB45 offers a low-maintenance solution that reduces the need for frequent replacements compared to mechanical contactors. This makes it an ideal choice for industries looking to minimise downtime and maximise operational efficiency. Whether it's for heating control, motor operation, or lighting systems, this Siemens contactor is a reliable component that ensures smooth and efficient electrical control.
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Frequently Asked Questions
What is the function of this solid-state contactor?
The solid-state contactor is designed for zero-point switching in 3-phase applications, providing efficient and reliable switching for AC loads.
Can this contactor be mounted side-by-side with other units?
Yes, this contactor is designed to allow side-by-side mounting, which can save space in your control cabinet.
What is the rated operating voltage range for this contactor?
The rated operating voltage range for the contactor is 48 to 600 V at AC, with a frequency of 50 to 60 Hz.
What is the control supply voltage range for this device?
The control supply voltage range for this device is 4 to 30 V DC.
What is the maximum operating current for this contactor?
The maximum operating current for the contactor is rated at 50 A for AC-51 utilisation category.
What are the ambient temperature limits for operating this contactor?
The contactor can operate within an ambient temperature range of -25 to +60 °C.
What type of terminals does this contactor have for connection?
This contactor is equipped with screw-type terminals for both the main current circuit and the auxiliary and control current circuit.
What is the insulation voltage rating for this contactor?
The insulation voltage rating for this contactor is 600 V.
What is the protection class of this contactor?
The protection class for this contactor is IP20, indicating a basic level of protection against solid objects.
What are the dimensions of this contactor?
The dimensions of the contactor are approximately 95 mm in height, 119.5 mm in width, and 129.9 mm in depth.
What is the maximum installation altitude for this contactor?
The maximum installation altitude for the contactor is 1,000 meters above sea level.
What is the resistance to vibration and shock for this contactor?
The contactor is resistant to vibrations of 2g and shock resistance of 15g / 11 ms, in accordance with IEC standards.
