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Siemens 6ES7321-1FF10-0AA0

Name: SIMATIC S7-300 Digital Input Module, Optically Isolated, 8 DI, 120/230VAC, 40-Pole
Brand: Siemens
SKU: 6ES7321-1FF10-0AA0

SIMATIC S7-300 Digital Input Module, Optically Isolated, 8 DI, 120/230VAC, 40-Pole

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Product Description

RoHS CompliantLifecycle Status:

The SIMATIC S7-300 Digital Input Module SM 321 is designed for reliable and efficient data transmission. It features optic isolation, ensuring high levels of safety and protection against electrical faults. This module supports up to 8 digital inputs (DI) and operates at a voltage of 120/230V AC. The module is equipped with a 40-pole connector, providing a single rooting/channel for easy installation and maintenance.

The SIMATIC S7-300 Digital Input Module SM 321 is a versatile solution that can be used in a variety of industrial applications. It is designed to meet the stringent requirements of modern automation systems, offering high performance and reliability. The module's optic isolation ensures that it can operate safely even in harsh environments, making it an ideal choice for industries such as manufacturing, power generation, and process control.

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Offer details

Offer from:: Trusted supplier — Germany, member since 2024
Availability:: On requestLead time: 9 days
Warranty:: 24 months
Condition:: Refurbished

Refurbished - A refurbished item inspected, cleaned, and repaired to full working order by either the manufacturer or a certified technician. The item is in excellent condition and fully operational.

The Seller is responsible for shipping the product and invoicing

Specifications

Brand: Siemens
Redundancy
Number of digital inputs: 8
Number of digital outputs: 0
Supply voltage AC 50 Hz: 93 V
Supply voltage AC 60 Hz: 93 V
Type of digital output: None

Available Offers

(9)

Condition	Availability	Supplier	Warranty
Condition Refurbished	Availability On requestLead time: 9 days	Supplier GermanyTrusted supplier — member since 2024	Warranty 24 months
Condition New Surplus	Availability On requestLead time: 21 days	Supplier RomaniaTrusted supplier — member since 2023, 1–4 employees	Warranty Not specified
Condition New Factory Sealed	Availability 20 pcs. In-Stock Updated at: 07-10-2026	Supplier United StatesTrusted supplier — member since 2023	Warranty 12 months
Condition New Factory Sealed	Availability 1 pc. In-Stock Updated at: 07-10-2026	Supplier CzechiaTrusted supplier — member since 2021, 50–99 employees	Warranty 24 months
Condition New Factory Sealed	Availability 1 pc. In-Stock Updated at: 07-10-2026	Supplier PolandTrusted supplier — member since 2023, 50–99 employees	Warranty 24 months
Condition New Factory Sealed	Availability On requestLead time: 15 days	Supplier NetherlandsTrusted supplier — member since 2021, 100–499 employees	Warranty 24 months

Offer with manufacturer lead time

Directly from the manufacturer - with a confirmed, predictable, and fully transparent delivery time.

Documents

Data Sheet

Datasheet for Siemens 6ES7321-1FF10-0AA0, including specifications and features.

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CAD Models

3D CAD model and technical drawings, ready for your design software.

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Product data updated: 01-10-2026

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