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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TX4431-2A |
| Alternative Part Number | 3TX44312A |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Block |
| Insulation Voltage | 690 V |
| Mounting Type | Snap-On Mount |
| Contact Configuration | 3NO (Normally Open) / 1NC (Normally Closed) |
| Protection Class | IP20 |
| Terminal Type | Screw |
| Mechanical Operating Cycles | 10,000,000 cycles |
| Rated Operating Current | 10 A |
| Dimensions | 45 x 25 x 24 mm |
| Ambient Operating Temperature Range | -25 … +55 °C |
| Storage Temperature Range | -55 … +80 °C |
| Insulation Voltage with Pollution 3 | Rated value 690 V |
| Impulse Voltage Resistance | Rated value 6 kV |
| Operating Current at AC-12 | 10 A at 24 V / 230 V, Maximum 10 A |
| Operating Current at AC-14 | 10 A at 125 V |
| Operating Current at AC-15 | 10 A at 24 V, 5.6 A at 230 V, 3.6 A at 400 V, 2.3 A at 690 V |
| Operating Current at DC-13 | 10 A at 24 V, 5 A at 60 V, 1.14 A at 110 V, 0.48 A at 220 V |
| Mounting Dimensions | Width 12 mm, Height 70 mm, Depth 51.5 mm |
| Electrical Connection | Screw-type terminals for auxiliary and control current circuit |
| Connectable Conductor Cross-section | 2x (0.5 ... 1.0 mm²), 2x (0.75 ... 2.5 mm²) for auxiliary contacts, 2x (18 ... 12) AWG |
| Positively Driven Operation | Compliant with IEC 60947-5-1 |
| Commodity Code | 853650 |
The Siemens 3TX4431-2A is a high-quality auxiliary switch block designed for seamless integration with contactor relays and motor contactors. This component is engineered to meet the stringent requirements of EN 50005, ensuring reliable performance in a variety of industrial applications. With an insulation voltage rated at 690 V and an impulse voltage resistance of 6 kV, it offers robust protection for your electrical circuits.
Featuring a snap-on mounting design, the 3TX4431-2A allows for quick and easy installation, saving valuable time during setup or maintenance. The switch block is compact, with dimensions of 45 x 25 x 24 mm, making it suitable for use in space-constrained environments. It is equipped with screw-type terminals, providing a secure and reliable connection for auxiliary and control current circuits.
The 3TX4431-2A boasts an impressive mechanical operating cycle of 10 million, highlighting its durability and long service life. It includes 3 normally open (NO) contacts and 1 normally closed (NC) contact for instantaneous switching, catering to a wide range of control and signalling functions.
This auxiliary switch block operates efficiently across a broad ambient temperature range, from -25°C to +55°C during operation and -55°C to +80°C during storage, ensuring consistent performance under varying environmental conditions. With an IP20 protection class rating on the front, it is safeguarded against solid objects larger than 12.5 mm, adding an extra layer of durability.
The 3TX4431-2A is a testament to Siemens' commitment to quality and reliability, making it an essential component for industrial control systems requiring precise and dependable auxiliary switching capabilities.
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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 3TX4431-2A auxiliary switch block is 690 V, with a degree of pollution 3.
Can this auxiliary switch block be used with motor contactors?
Yes, the auxiliary switch block is designed for use with contactor relays and motor contactors according to EN 50005.
What is the IP protection class of this auxiliary switch block?
The IP protection class for this auxiliary switch block is IP20, which provides protection against solid objects larger than 12mm but not against water.
What are the operating and storage temperature ranges for this part?
The operating temperature range is from -25°C to +55°C, and the storage temperature range is from -55°C to +80°C.
How many mechanical operating cycles can this auxiliary switch block withstand?
The auxiliary switch block is rated for typically 10,000,000 mechanical operating cycles.
What is the impulse voltage resistance of this part?
The impulse voltage resistance of the auxiliary switch block is rated at 6 kV.
What are the dimensions of the auxiliary switch block?
The dimensions of the auxiliary switch block are 45 mm in width, 25 mm in height, and 24 mm in depth.
What type of mounting does this auxiliary switch block support?
The auxiliary switch block supports snap-on mounting for easy installation.
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.
How many normally open (NO) and normally closed (NC) contacts does this auxiliary switch block have?
The auxiliary switch block has 3 normally open (NO) contacts and 1 normally closed (NC) contact.
