6AG1321-1FF10-7AA0 Siemens S7-300

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Siemens 6AG1321-1FF10-7AA0 SIPLUS S7-300 SM 321 digital input module, 8DI AC 120/230 V, 40-pole

Part Specifications

Manufacturer: Siemens Product Family: SIPLUS S7-300 SM 321 HS Code: 85389091 EAN: 4042948452646 SKU: 6AG1321-1FF10-7AA0 Country of Origin: DE Product Weight: 0.328 KG Packaging Height: 5.00 CM Packaging Length: 13.00 CM Packaging Width: 15.00 CM
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Full 12-month warranty

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Product description

6AG1321-1FF10-7AA0 Siemens SIPLUS S7-300 SM 321 Digital Input Module

The Siemens 6AG1321-1FF10-7AA0 is a SIPLUS S7-300 SM 321 digital input module. It is designed for automation projects that require high-voltage AC input handling. This SIPLUS variant is derived from the standard 6ES7321-1FF10-0AA0. It features a conformal protective coating that safeguards against moisture, condensation, and aggressive industrial conditions.

The module is engineered to operate consistently within a temperature range of –25 °C to +70 °C. It is ideally suited for industries that experience harsh environments, fluctuating climates, or extended operating hours.

Electrical and mechanical features:

The 6AG1321-1FF10-7AA0 offers 8 isolated digital inputs (DI). These inputs are rated for 120 V and 230 V AC, making the device a great choice for applications that utilise higher AC input signals. Secure installation and seamless integration into Siemens S7-300 PLC designs are both made possible by its 40-pole connector.

Helping engineers keep complicated control systems clear and efficient, a single routing channel further improves the reliability of input signal arrangement.

Applications in industry:

This SIPLUS SM 321 module is a dependable choice across a range of industries, including:

  • Energy and utilities – where high-voltage AC inputs are standard
  • Transport and infrastructure – ensuring reliable signal capture in traffic, rail, or tunnel systems
  • Manufacturing and heavy industry – delivering stable input processing in challenging production environments

A combination of high-voltage compatibility is offered by the 6AG1321-1FF10-7AA0. This means automation engineers now have access to a flexible input option that improves safety and uptime.

Practical Design

Weighing 0.328 kg and measuring 13 cm in length × 5 cm in height, this module combines durability with compact dimensions. It can be readily included into control cabinets. This design does not compromise on space, making it suitable for both expansions and new installations.

  • EAN: 4042948452646
  • Country of Origin: Germany
  • Commodity Code: 85389091
  • Category: Controllers, Distributed I/O Devices, I/O Extension Modules, Siemens Simatic S7

Obsolescence planning

Notice: The Siemens 6AG1321-1FF10-7AA0 will be made obsolete from 1st October 2025. Businesses should secure spare units now to ensure continuity of operation.

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