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SIEMENS · SIMATIC S7-300

+86 17359287459|sales9@apterpower.com

ARTICLE NUMBER

6ES7321-1CH20-0AA0

PRODUCT NAME

SM 321 16DI 48–125 V DC Digital Input Module

CONDITIONNew Original

WARRANTYOne year

AVAILABILITYIn stock

TECHNICAL PROFILE

+86 17359287459|sales9@apterpower.com

This S7-300 input module receives higher-voltage DC status signals through an isolated input arrangement. Its 20-pole front connection and exact article number support documented wiring, fault tracing and controlled replacement in established controller racks.

DIGITAL INPUTS

INPUT VOLTAGE

48–125 V DC

ISOLATION

Isolated

FRONT CONNECTOR

20-pole

PERFORMANCE & EFFICIENCY

The grouped input design brings multiple DC status points into one S7-300 module. Isolated inputs support structured signal handling in the existing control architecture.

APPLICATION SCENARIOS

Used in machine and plant control cabinets to monitor DC contacts and status devices where S7-300 racks and 48–125 V DC input circuits are already specified.

BRAND CHARACTERISTICS

Siemens S7-300 modules use identifiable article codes and established rack documentation for controlled maintenance and replacement.

TRACEABLE

ISOLATED

MODULAR

APPLICATION FIELDS

Digital input modules collect equipment status and auxiliary contact signals in industrial PLC cabinets and retrofit programs.

STATUS

CONTROL

RETROFIT

RELATED MODELS

SIEMENS

HELMHOLZ

6ES5453-4UA12

6ES5456-4UB12

700-972-0BA12

700-972-7BA12

6ES5458-4UC11

6ES5436-4UA12

700-751-1VK21

700-752-1AA23

6ES5432-4UA12

6ES5464-8MF21

700-859-1BB01

700-860-MPI01

6ES5470-4UB12

6ES5457-4UA12

700-600-1AA11

700-600-2AA11

6ES7331-1KF01-0AB0

6ES7331-7TB00-0AB0

700-600-3AA11

700-500-0AA01

6ES7142-6BF00-0AB0

6ES7132-0BH10-0XB0

700-400-1AA01

700-400-2AA01

6ES7135-6HB00-0DA1

6AG1323-1BH01-2AA0

700-300-1AA01

700-300-2AA01

6ES7954-8LL02-0AA0

6SL3054-0CG00-1AA0

700-751-8VK21

700-972-0BB12

6ES7321-7RD00-0AB0

6ES7144-4FF01-0AB0

700-972-7BB12

700-158-0AD02

6ES7134-6HB00-0CA1

6ES7951-0KJ00-0AA0

700-153-8AA01

700-151-0AA23

QUOTE

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SIMATIC S7-300 SM 321 16DI 48–125 V DC Digital Input Module

Siemens Digital Input Module Datasheet

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