6ES7321-1BH02-0AA0 Siemens Digital Input Module 6ES73211BH020AA0 Genuine New

6ES7321-1BH02-0AA0 Digital Input Module 

Siemens SM321, 16DI 24V DC | Genuine New

SIMATIC S7-300 Digital Input Module SM 321, Isolated, 16 Digital Inputs, 24 V DC, One 20-Pin Connector

The Siemens 6ES7321-1BH02-0AA0 is a digital input module designed specifically for SIMATIC S7-300 automation systems. This module features 16 isolated digital inputs, operates at 24 V DC, and is suitable for reliable signal acquisition in industrial environments. The 6ES7321-1BH02-0AA0 connects via a single 20-pin connector, simplifying integration with control cabinets. Its robust construction ensures reliable operation in new and existing production lines, and is particularly suitable for applications requiring stable signal processing.

Siemens' reliable quality ensures long-term performance and stability.

Sufficient inventory and rapid delivery minimize production downtime.

The new 6ES7321-1BH02-0AA0 module comes with a one-year warranty, supporting sustainable operations.This SIEMENS 6ES7321-1BH02-0AA0 input module can be used to replace your faulty parts and comes with a one-year warranty.

Product Information

• Make	SIEMENS
  Category	SIMATIC S7-300 Digital input module
  Rated value (DC)	24 V
  permissible range, lower limit (DC)	20.4 V
  permissible range, upper limit (DC)	28.8 V
  Number of digital inputs	16
  Width	40 mm
  Height	125 mm
  Depth	120 mm
  Weight, approx.	200 g

Functional Advantages

• High Signal Integrity
  Opto-isolated inputs protect the PLC CPU from voltage spikes, electrical noise, and field interference, ensuring stable operation in harsh industrial environments.

• Reliable 24V DC Input Detection
  Optimized for standard industrial sensors such as proximity switches, limit switches, and push buttons.

• Seamless S7-300 Integration
  Fully compatible with SIMATIC S7-300 CPUs and configured easily via STEP 7 engineering software.

• Industrial-Grade Durability
  Built for continuous operation in automation cabinets, production lines, and machine control systems.

Typical Applications

• Industrial automation and machine control

• Manufacturing production lines

• Packaging and assembly systems

• Process control and factory monitoring

• Retrofit and replacement for S7-300 installations