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Siemens 6ES7321-1BH02-0AA0

SIMATIC S7-300 Digital Input Module, 16DI, 24VDC

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Siemens 6ES7321-1BH02-0AA0 SIMATIC S7-300 Digital Input Module, 16DI, 24VDC — PLC Modules & Extensions
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Product Description

RoHS CompliantLifecycle Status:

The SIMATIC S7-300 Digital Input Module with 16 isolated digital inputs is designed for seamless integration into industrial automation systems. This module operates at 24V DC and is equipped with a 20-pole front connector for easy installation. It ensures high performance and reliability, meeting the stringent requirements of modern automation environments.

Featuring IEC 61131 compliance, the module supports various input voltage ranges and signal types, making it versatile for different applications. The module's robust design includes optocoupler isolation between channels and the backplane bus, enhancing operational safety and reducing interference.

With a typical power loss of 3.5W, the module is energy-efficient and suitable for continuous operation. It can handle up to 16 simultaneously controllable inputs, ensuring efficient processing even in demanding conditions. The module also supports connectable encoders, including 2-wire sensors, providing flexibility in system design.

Although the module does not feature diagnostic functions or alarms, it includes a status indicator LED for each digital input, allowing for straightforward monitoring of input states. The module's compact dimensions (40mm width, 125mm height, 120mm depth) and lightweight design (approx. 200g) make it easy to integrate into existing setups.

Ideal for use in hazardous locations, the module holds various approvals, including EMV, FM, CCC-Ex, and maritime applications. It complies with environmental...

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Offer details

Offer from:
Trusted supplier — Poland, member since 2021, 5–9 employees 
Availability:
1 pc.
In-Stock
Updated at: 13-10-2026
Warranty:
12 months
Condition:
Used
Used - A previously used item with possible signs of cosmetic wear. It is fully operational and functions as intended, though the original packaging may be missing.
The Seller is responsible for shipping the product and invoicing

Specifications

Brand
Siemens
Supply voltage
24 V DC
Permissible range (DC)
20.4 V - 28.8 V
Input current from backplane bus
10 mA max.
Power loss
3.5 W typ.
Number of digital inputs
16
Input characteristic curve
IEC 61131, type 1

Available Offers

(78)
ConditionAvailabilitySupplierWarrantyAction
Siemens 6ES7321-1BH02-0AA0
Condition
Used
Availability
1 pc.
In-Stock
Updated at: 13-10-2026
Supplier
PolandTrusted supplier — member since 2021, 5–9 employees 
Warranty
12 months
Siemens 6ES7321-1BH02-0AA0
Condition
Used
Availability
4 pcs.
In-Stock
Updated at: 10-03-2026
Supplier
GermanyTrusted supplier — member since 2022 
Warranty
1 month
Siemens 6ES7321-1BH02-0AA0
Condition
Used
Availability
2 pcs.
In-Stock
Updated at: 10-03-2026
Supplier
GermanyTrusted supplier — member since 2022 
Warranty
1 month
Siemens 6ES7321-1BH02-0AA0
Condition
Used
Availability
1 pc.
In-Stock
Updated at: 10-03-2026
Supplier
GermanyTrusted supplier — member since 2022 
Warranty
1 month
Siemens 6ES7321-1BH02-0AA0
Condition
Used
Availability
3 pcs.
In-Stock
Updated at: 10-03-2026
Supplier
GermanyTrusted supplier — member since 2022 
Warranty
1 month
Siemens 6ES7321-1BH02-0AA0
Condition
Used
Availability
1 pc.
In-Stock
Updated at: 10-03-2026
Supplier
GermanyTrusted supplier — member since 2022 
Warranty
1 month

Offer with manufacturer lead time

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

Documents

Data Sheet

Datasheet for Siemens 6ES7321-1BH02-0AA0, 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: 13-10-2026

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