🔹 Auxiliary Contact Block – Siemens 3TX40012A (3TX Series)
The Siemens 3TX40012A is an auxiliary contact block from the 3TX series, designed to be mounted on Siemens contactors to provide additional control and feedback signals. It is used in industrial control circuits, PLC systems, and automation panels to extend the number of available auxiliary contacts for signaling, interlocking, and status indication.
This auxiliary contact block is typically used alongside main contactors to provide NO/NC feedback for control logic, ensuring safe operation and reliable monitoring of switching states.
🔹 Key Features
• Siemens 3TX Series auxiliary contact block
• Model: 3TX40012A
• Plug-in type mounting on contactors
• Provides auxiliary switching contacts (typically 1NO or 1NC depending on variant)
• Used for control circuit feedback and interlocking
• Suitable for PLC input signaling and status indication
• Compact modular design for easy installation
• High electrical endurance for control circuits
• Designed for industrial automation systems
• Compatible with Siemens SIRIUS contactor systems
• Reliable switching performance in low-current control applications
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3TX Series |
| Model Number | 3TX40012A |
| Product Type | Auxiliary Contact Block |
| Contact Type | 1NO / 1NC (variant dependent) |
| Rated Current | ~3.6 A at AC-15 (typical) |
| Mounting Type | Snap-on / Plug-in on contactor |
| Application | Control circuits, PLC feedback, interlocking |
| Brand | Siemens |
| Usage | Industrial automation & control systems |
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