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3TX4422-2A
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TX4422-2A |
| Alternative Part Number | 3TX44222A |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Block |
| Rated Insulation Voltage | 690 V |
| Mounting Type | Snap-On Mounting |
| Contact Configuration | 2NO/2NC (2 Normally Open, 2 Normally Closed) |
| Rated Operational Current | 10 A |
| Dimensions | 45 x 25 x 24 mm |
| Terminal Type | Screw Terminal |
| Ambient Operating Temperature | -25 ... +55 °C during operation, -55 ... +80 °C during storage |
| Mechanical Service Life | Typically 10,000,000 switching cycles |
| Surge Voltage Resistance | Rated value 6 kV |
| Protection Class | IP20 on the front |
| Suitable For Use With | Contactor relays and power contactors according to EN 50005 |
| Auxiliary Circuit Contact Type | Instantaneous switching for both NO and NC contacts |
| Connectable Conductor Cross-sec | For auxiliary contacts: 2x (0.5 ... 1.0 mm²), 2x (0.75 ... 2.5 mm²), for AWG conductors: 2x (18 ... 12) |
| Product Function | Positively driven operation according to IEC 60947-5-1 |
| Approvals/Certificates | General product approval and test certificates available |
The Siemens 3TX4422-2A auxiliary switch block is a compact and reliable component designed for seamless integration with contactor relays and motor contactors. Engineered to meet the stringent requirements of industrial applications, this switch block boasts a robust construction that ensures durability and a long service life, with a typical mechanical operating cycle count of 10 million.
With an insulation voltage rated at 690V and a surge voltage resistance of 6kV, the 3TX4422-2A provides a high level of electrical insulation and protection against transient voltage spikes. The switch block features 2 normally open (NO) and 2 normally closed (NC) contacts, allowing for flexible configuration in control circuits.
The device is suitable for operating temperatures ranging from -25°C to +55°C, ensuring reliable performance in a variety of environmental conditions. The front of the unit is protected to IP20, safeguarding the internal components from solid objects larger than 12.5mm.
Installation is made simple with its snap-on mounting design, and the dimensions of 45mm in width, 24mm in height, and 25mm in depth make it an easy fit in tight spaces. The screw-type terminals provide a secure and reliable electrical connection, accommodating a range of conductor cross-sections for auxiliary contacts.
The 3TX4422-2A is a testament to Siemens' commitment to quality, offering a dependable solution for enhancing control systems in industrial settings across the United Kingdom and beyond.
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Frequently Asked Questions
What is the insulation voltage rating for this auxiliary switch block?
The insulation voltage rating for the Siemens auxiliary switch block is 690 V, suitable for use in a variety of industrial applications.
Can this auxiliary switch block be used with both contactor relays and motor contactors?
Yes, this auxiliary switch block is designed for use with both contactor relays and motor contactors, providing versatility in its application.
What is the protection class of the front side of this auxiliary switch block?
The front side of the auxiliary switch block is rated at IP20, offering protection against solid objects larger than 12.5 mm but not against water.
What are the ambient temperature limits for operating this auxiliary switch block?
The auxiliary switch block can operate within an ambient temperature range of -25°C to +55°C, and can be stored in temperatures ranging from -55°C to +80°C.
What is the mechanical service life of this auxiliary switch block?
The mechanical service life of the auxiliary switch block is typically around 10 million operating cycles, indicating its durability and reliability.
How many normally open (NO) and normally closed (NC) contacts does this auxiliary switch block have?
This auxiliary switch block features 2 normally open (NO) and 2 normally closed (NC) contacts, providing flexibility in control circuit design.
What is the maximum operating current for the auxiliary contacts at AC-12?
The maximum operating current for the auxiliary contacts at AC-12 is 10 A, ensuring adequate current handling for most control circuit requirements.
What type of mounting does this auxiliary switch block support?
The auxiliary switch block supports snap-on mounting, which allows for quick and easy installation onto compatible devices.
What are the dimensions of this auxiliary switch block?
The dimensions of the auxiliary switch block are 45 mm in width, 24 mm in height, and 25 mm in depth, making it compact and suitable for various installations.
What type of electrical connection does this auxiliary switch block use?
The auxiliary switch block utilises screw-type terminals for its electrical connections, providing a secure and reliable connection for auxiliary and control current circuits.
