🔹 Auxiliary Contact Block – Siemens 3TX40102A (3TX Series)
The Siemens 3TX40102A is an auxiliary contact block from the 3TX series, designed to be mounted on Siemens contactors for providing additional control and signaling contacts. It is used in industrial control panels, PLC systems, and automation circuits to extend the number of auxiliary inputs for status indication, interlocking, and feedback functions.
This module typically provides a 1 NO (Normally Open) auxiliary contact, which changes state when the main contactor operates. It is widely used for feedback signals in control circuits and automation logic.
Siemens 3TX40102A Auxiliary Contact Block
🔹 Key Features
• Siemens 3TX Series auxiliary contact block
• Model: 3TX40102A
• Plug-in / snap-on mounting on contactors
• 1 NO auxiliary contact configuration
• Used for control circuit feedback and signaling
• Suitable for PLC input and interlocking systems
• Compact modular design for easy installation
• High electrical endurance for control applications
• Reliable switching synchronized with main contactor
• Compatible with Siemens SIRIUS contactor range
• Designed for industrial automation and control panels
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3TX Series |
| Model Number | 3TX40102A |
| Product Type | Auxiliary Contact Block |
| Contact Type | 1 NO (Normally Open) |
| Rated Voltage | Up to 690 V insulation class (typical) |
| Rated Operational Current | AC-15 duty (control circuit, low current) |
| Mounting Type | Snap-on / Plug-in |
| Application | PLC feedback, interlocking, status indication |
| Usage | Industrial automation & control systems |
| Brand | Siemens |
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