Home › Manufacturers › Siemens › SIMATIC S5 › 6ES5421-8MA12

Siemens

Siemens SIMATIC S5 6ES5421-8MA12 8-Channel Digital Input Module

Name: Siemens 6ES5421-8MA12
Brand: Siemens
SKU: 6ES5421-8MA12
Availability: InStock

Siemens SIMATIC S5 8-channel digital input module, 24V DC.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number6ES5421-8MA12

Type Digital Input Module

Series SIMATIC S5 421

Compatible With S5-90U, S5-95U, S5-100U, ET 100U, ET 200U

Inputs 8

Get a price for 6ES5421-8MA12

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

8 non-isolated digital inputs 24V DC voltage For S5-90U/95U/100U, ET 100U/200U SIMATIC S5 compatibility Reliable signal acquisition Industrial grade

Product description

The Siemens 6ES5421-8MA12 is a SIMATIC S5 digital input module featuring 8 non-isolated inputs, designed for 24V DC operation. It is intended for use with Siemens S5-90U, S5-95U, S5-100U, ET 100U, and ET 200U automation systems, offering a reliable solution for discrete input signals.

This module is suitable for a range of industrial applications within the specified S5 platforms, such as machine control, process monitoring, and building automation, where 8 digital inputs are required. Its non-isolated nature simplifies wiring in many common scenarios.

Stanlo Automation, a veteran-owned business specializing in surplus industrial automation parts, provides the Siemens 6ES5421-8MA12. We ensure you have access to quality components to maintain and upgrade your existing Siemens S5 automation infrastructure.

Technical specifications

Type	Digital Input Module
Series	SIMATIC S5 421
Compatible With	S5-90U, S5-95U, S5-100U, ET 100U, ET 200U
Inputs	8
Voltage	24V DC
Isolation	Non-isolated

Common applications

Siemens S5-90U/95U/100U

ET 100U/200U

Industrial Automation

PLC Systems

Machine Control

Process Monitoring

Building Automation

Compatible systems

Siemens SIMATIC S5-90U Siemens SIMATIC S5-95U Siemens SIMATIC S5-100U Siemens ET 100U Siemens ET 200U

Also known as

Siemens S5 421 Input 8 Channel 6ES54218MA12 SIMATIC S5 Digital Input

Replaces / compatible with

This module serves as a replacement for other 8-channel 24V DC non-isolated input modules within the Siemens S5-90U, S5-95U, S5-100U, ET 100U, and ET 200U product families. Confirm specifications match your needs.

Technical note

Expert tip

When wiring the Siemens 6ES5421-8MA11, ensure all 8 inputs share a common reference point that is correctly connected to the PLC's system ground for proper functioning of the non-isolated input channels.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What is the typical application for the Siemens 6ES5421-8MA12 8-channel input module?

The Siemens 6ES5421-8MA12 is typically used in Siemens SIMATIC S5 automation systems like the S5-90U, S5-95U, S5-100U, ET 100U, and ET 200U. It provides 8 non-isolated digital inputs at 24V DC, suitable for monitoring binary signals from sensors and switches in various industrial control tasks.