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Siemens SIMATIC S7-300 Digital Input Module SM 321, Optically Isolated, 16 DI, 6ES7321-1FH00-0AA0
The Siemens SIMATIC S7-300 Digital Input Module SM 321, Optically Isolated, 16 DI, 6ES7321-1FH00-0AA0 is a reliable and high-performance input module designed for industrial automation and process control applications. Engineered for seamless integration with Siemens S7-300 PLC systems, this module provides 16 optically isolated digital inputs for safe and accurate signal acquisition from field devices such as sensors, switches, limit switches, and control circuits. With its robust Siemens engineering, strong electrical isolation, and stable signal processing, the 6ES7321-1FH00-0AA0 ensures dependable operation in demanding industrial environments where precision and reliability are essential.
Key Features
Provides 16 optically isolated digital inputs for safe and reliable signal acquisition.
Designed for seamless integration with Siemens SIMATIC S7-300 PLC systems.
Ensures high noise immunity and electrical isolation for stable industrial operation.
Suitable for interfacing with sensors, switches, and field-level control devices.
Built with Siemens industrial-grade quality for long-term durability and performance.
Specifications
Brand: Siemens
Product Series: SIMATIC S7-300
Product Type: Digital Input Module
Model: SM 321
Manufacturer Part Number: 6ES7321-1FH00-0AA0
Number of Inputs: 16 Digital Inputs
Input Type: Optically Isolated
Voltage Rating: Industrial DC input (typical 24 V DC systems)
Application: Industrial automation, machine control, process monitoring, and PLC input systems
Compatibility: Siemens SIMATIC S7-300 controllers
Mounting Type: PLC rack module installation
Construction: Rugged industrial-grade module for control cabinet integration
The Siemens SIMATIC S7-300 SM 321 Digital Input Module 6ES7321-1FH00-0AA0 delivers dependable signal acquisition, strong electrical isolation, and reliable performance for industrial automation systems. Backed by Siemens’ global reputation for engineering excellence, this module ensures stable operation, accurate input handling, and long service life. Ram Automations supplies genuine Siemens automation products for industrial control applications. For pricing, availability, or technical support, contact info@ramautomations.com.
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
