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3TX4412-1A
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TX4412-1A |
| Alternative Part Number | 3TX44121A |
| Manufacturer | Siemens |
| Suitability for Use | Contactor relay and power contactor |
| Protection Class IP on the Front | IP20 |
| Ambient Temperature (Operation) | -25 ... +55 °C |
| Ambient Temperature (Storage) | -55 ... +80 °C |
| Mechanical Service Life | Typical 10,000,000 switching cycles |
| Insulation Voltage | Rated value 690 V with degree of pollution 3 |
| Surge Voltage Resistance | Rated value 6 kV |
| Auxiliary Circuit NC Contacts | 2 instantaneous contacts |
| Auxiliary Circuit NO Contacts | 1 instantaneous contact |
| Operating Current at AC-12 | 10 A at 24 V, 10 A at 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 rated value |
| Operating Current at DC-12 | 4 A at 24 V, 1.1 A at 110 V, 0.5 A at 220 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 Type | Snap-on mounting |
| Dimensions (Width x Height x Depth) | 45 mm x 24 mm x 25 mm |
| Electrical Connection Type | Screw-type terminals |
| Connectable Conductor Cross-Sections | 2x (0.5 ... 1.0 mm²), 2x (0.75 ... 2.5 mm²) for auxiliary contacts, 2x (18 ... 12) AWG conductors |
| Positively Driven Operation | According to IEC 60947-5-1 |
| Certificates/ Approvals | General Product Approval, Functional Safety/Safety of Machinery, KC Type Examination Certificate |
The Siemens 3TX4412-1A is a versatile auxiliary switch block designed to enhance the functionality of motor contactors. This component is engineered to be compatible with contactor relays and power contactors, ensuring seamless integration into a variety of industrial control systems. With a protection class of IP20, it is suitable for use in environments where protection against solid objects is necessary.
This auxiliary switch block operates reliably within a broad ambient temperature range, from as low as -25°C to as high as +55°C during operation, and can withstand storage temperatures from -55°C to +80°C. Its mechanical service life is impressive, with a typical expectancy of 10 million switching cycles, signifying a robust and durable design.
The 3TX4412-1A is equipped with 1 Normally Open (NO) and 2 Normally Closed (NC) contacts for auxiliary purposes, providing flexibility in control circuit design. It can handle operating currents of up to 10 A at 24 V and 230 V for AC-12 applications, and its insulation voltage is rated at 690 V with a degree of pollution 3, ensuring safe operation even in electrically demanding situations.
Installation is straightforward with its snap-on mounting design, and the dimensions of 45 mm in width, 24 mm in height, and 25 mm in depth make it a compact addition to any control panel. The screw-type terminals offer a secure and reliable electrical connection for auxiliary and control current circuits, accommodating a range of conductor cross-sections.
The 3TX4412-1A is also designed with safety in mind, featuring positively driven operation in accordance with IEC 60947-5-1 standards. It holds a general product approval and has been certified with a KC Type Examination Certificate, ensuring compliance with international standards.
This auxiliary switch block is an essential component for those seeking to enhance the control and safety of their motor contactor applications, providing reliable performance and a high degree of flexibility in system design.
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Frequently Asked Questions
What is the suitability for use of this auxiliary switch block?
This auxiliary switch block is suitable for use with contactor relays and power contactors.
What is the protection class on the front of the auxiliary switch block?
The protection class on the front of the auxiliary switch block is IP20.
What are the ambient temperature ranges for storage and operation?
The ambient temperature range for storage is -55 to +80°C, and for operation, it is -25 to +55°C.
What is the mechanical service life of the auxiliary switch block?
The typical mechanical service life of the auxiliary switch block is 10 million switching cycles.
What is the insulation voltage and surge voltage resistance of this part?
The insulation voltage with degree of pollution 3 at AC rated value is 690V, and the surge voltage resistance rated value is 6kV.
How many contacts does the auxiliary switch block have and what are their ratings?
The auxiliary switch block has 1 NO (normally open) contact and 2 NC (normally closed) contacts. The operating current for auxiliary contacts at AC-12 is 10A at both 24V and 230V.
Can you provide the dimensions for mounting the auxiliary switch block?
The dimensions for mounting are a width of 45mm, height of 24mm, and depth of 25mm.
What type of electrical connection does the auxiliary switch block use?
The auxiliary switch block uses screw-type terminals for electrical connections.
Is the operation of the auxiliary switch block positively driven according to IEC 60947-5-1?
Yes, the product function is positively driven operation according to IEC 60947-5-1.
What certifications does the auxiliary switch block hold?
The auxiliary switch block holds a general product approval and a KC type examination certificate.
