The 6ES7461-3AA00-7AA0 is a dedicated terminating connector from Siemens. It works specifically with the IM 461-3 receiver module in S7-400 automation systems. This accessory plays a critical role in proper bus termination. Without it, signal reflections can disrupt communication on the backplane bus.
Specifically, this terminating connector belongs to the S7-400 product family. Its product type designation is straightforward: a terminating connector. You need it when setting up remote I/O racks with the IM 461-3 receiver. Therefore, always keep one on hand for each terminated segment.
The 6ES7461-3AA00-7AA0 has no complex electrical ratings. It serves as a passive termination device for the S7-400 backplane bus. When installed, it prevents signal echoes at the end of the bus cable. This ensures clean and reliable data transmission between modules.
Additionally, this terminating connector belongs to the S7-400 system as an official accessory. It pairs exclusively with the IM 461-3 receiver module. Do not use it with other IM models like IM 461-1 or IM 461-0. The design is specifically matched to the IM 461-3's bus characteristics.
Weight is very low at approximately 74 g. The gross weight with packaging is 0.12 kg. Dimensions are compact, matching standard S7-400 connector footprints. You can easily install it by hand without special tools.
Meanwhile, the Siemens 6ES7461-3AA00-7AA0 is built for industrial durability. It withstands vibration and temperature changes inside control cabinets. Its robust housing protects the internal termination circuit from dust and moisture.
First, locate the IM 461-3 receiver module on your S7-400 rack. Then, identify the bus connector port designated for termination. Next, insert the 6ES7461-3AA00-7AA0 firmly into that port until it clicks.
For instance, you must place this terminating connector at the physical end of the bus segment. If you have multiple IM 461-3 modules in a chain, only the last one needs termination. The first module typically does not require a terminator.
Finally, verify that the connector is fully seated. A loose connection can cause intermittent bus errors. After installation, power up the system and check for normal communication.
One Siemens 6ES7461-3AA00-7AA0 terminating connector
One quick-installation leaflet
Note: This package does not include certificates or warranty documents.
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1. Which module does the 6ES7461-3AA00-7AA0 work with?
It works exclusively with the IM 461-3 receiver module in SIMATIC S7-400 systems.
2. Do I always need this terminating connector for my IM 461-3?
You need it only when the IM 461-3 sits at the physical end of a bus segment. The last module on the chain requires termination.
3. Can I use the 6ES7461-3AA00-7AA0 with an IM 461-1 module?
No, this terminating connector belongs to the IM 461-3 only. Other IM models use different termination methods.
4. What happens if I forget to install this terminator?
Signal reflections may occur, causing data errors or communication failures on the backplane bus.
5. How much does the Siemens 6ES7461-3AA00-7AA0 weigh?
It weighs approximately 74 grams, making it very lightweight and easy to handle.
| Brand Name | Siemens |
| Model No. | 6ES7461-3AA00-7AA0 |
| Product Type | Terminating Connector |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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