Siemens 6ES7321-1BH10-0AA0

Name: SIMATIC S7-300 Digital Input Module, SM 321
Brand: Siemens
SKU: 6ES7321-1BH10-0AA0

SIMATIC S7-300 Digital Input Module, SM 321

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Product Description

RoHS CompliantLifecycle Status:

The SIMATIC S7-300 Digital Input Module, SM 321, is a galvanically isolated device designed to provide digital input functionality for the SIMATIC S7-300 system. This module supports up to 16 digital inputs and operates at a power supply voltage of 24 V DC. It features a compact design with a single 20-pole connector, ensuring efficient use of space in your automation system.

The input delay is optimized for fast response times, with a delay of only 0.05 ms. This ensures that your system can react promptly to changes in the digital inputs, enhancing overall performance and reliability.

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Offer details

Offer from:: Trusted supplier — Romania, member since 2023, 1–4 employees
Availability:: On requestLead time: 21 days
Warranty:: Not specified
Condition:: New Surplus

New Surplus - A new, unused, undamaged item without a manufacturer guarantee. The item may come without original packaging or in replacement packaging. If provided, the box may have been opened.

The Seller is responsible for shipping the product and invoicing

Specifications

Brand: Siemens
Redundancy
Supply voltage DC: 20.4 V
Number of digital inputs: 16
Number of digital outputs: 0
Type of digital output: None
Input current at signal 1: 7 A

Available Offers

(10)

Condition	Availability	Supplier	Warranty
Condition New Surplus	Availability On requestLead time: 21 days	Supplier RomaniaTrusted supplier — member since 2023, 1–4 employees	Warranty Not specified
Condition New Surplus	Availability 1 pc. In-Stock Updated at: 15-09-2026	Supplier GermanyTrusted supplier — member since 2024	Warranty 24 months
Condition Refurbished	Availability 1 pc. In-Stock Updated at: 15-09-2026	Supplier GermanyTrusted supplier — member since 2024	Warranty 24 months
Condition New Factory Sealed	Availability 20 pcs. In-Stock Updated at: 19-09-2026	Supplier United StatesTrusted supplier — member since 2023	Warranty 12 months
Condition New Factory Sealed	Availability 5 pcs. In-Stock Updated at: 19-09-2026	Supplier PolandTrusted supplier — member since 2023, 50–99 employees	Warranty 24 months
Condition New Surplus	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 6ES7321-1BH10-0AA0, 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: 22-08-2026

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