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Siemens 6ES5421-8MA12
Siemens 6ES5421-8MA12
Siemens 6ES5421-8MA12

Siemens 6ES5421-8MA12 SIMATIC S5 421 Digital Input Module

Siemens SIMATIC S5 · Digital Input 421

6ES5421-8MA12

The 6ES5421-8MA12 is a Siemens SIMATIC S5 421 digital input module with eight non-isolated 24 V DC inputs. The exact article is listed for S5-90U, S5-95U, S5-100U, ET 100U and ET 200U.

PRODUCT TYPEDIGITAL INPUT 421
INPUT CHANNELS8
INPUT VOLTAGE24 V DC
NET WEIGHT0.191 KG
MANUFACTURERSiemens
CONDITION / WARRANTYOriginal New · One-Year Warranty
ISO CERTIFICATIONISO-Certified Product
VERIFICATION● Product photos and videos provided after inquiry
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SIEMENS ● SIEMENS SIMATIC S5 · DIGITAL INPUT 421
Siemens SIMATIC S5

6ES5421-8MA12

Digital Input 421 · 8 inputs · 24 V DC

Digital Input 421 · 8 inputs · 24 V DC

PRODUCT ROLE
6ES5421-8MA12 is a SIMATIC S5 digital input 421 module providing eight non-isolated 24 V DC inputs for the systems listed by Siemens.
TECHNICAL CONTEXT
For 6ES5421-8MA12, Siemens lists this exact article for S5-90U, S5-95U, S5-100U, ET 100U and ET 200U. Check the installed station, channel wiring and complete order number before replacement.
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MANUFACTURER-REFERENCE CHARACTERISTICS

Technical Specifications

Contact Frida for documentation ↗
SIMATIC S5 Digital Input 421

Engineering data at a glance

Click “+” to expand more specifications.

PRODUCT TYPEDIGITAL INPUT 421
INPUT CHANNELS8
INPUT VOLTAGE24 V DC
NET WEIGHT0.191 KG
Siemens SiePortal, exact 6ES5421-8MA12 product record.
CONFIGURATION MATCH6ES5421-8MA12 is an eight-channel, 24 V DC digital input 421 module. Confirm the full article number, installed system and non-isolated field wiring.
General Information −
BrandSiemens
Part number6ES5421-8MA12
Product typeDigital input 421
Product familySIMATIC S5
Input and System Configuration ＋
Number of inputs8
Nominal input voltage24 V DC
Input isolationNon-isolated
Listed systemsS5-90U / S5-95U / S5-100U; ET 100U / ET 200U
Physical and Lifecycle Data ＋
Packaging dimensions (L x W x H)14.2 x 11.1 x 5.8 cm
Net weight0.191 kg
Product lifecycleEnd of product lifecycle
Source: Siemens SiePortal exact 6ES5421-8MA12 product description.
FAQ

Questions Buyers Ask Most

How many inputs does 6ES5421-8MA12 have?＋

The exact Siemens article lists eight digital inputs for 6ES5421-8MA12. Confirm the installed terminal and channel mapping.

What signal voltage is specified for 6ES5421-8MA12?＋

Siemens specifies 24 V DC digital inputs for 6ES5421-8MA12. Verify field-supply and signal levels against the existing installation.

Are 6ES5421-8MA12 input channels isolated?＋

Siemens describes 6ES5421-8MA12 as non-isolated. Check the grounding and wiring arrangement before substituting a different input variant.

Which S5 and ET systems are listed for 6ES5421-8MA12?＋

The exact description names S5-90U, S5-95U, S5-100U, ET 100U and ET 200U. Match the complete article and installed station.

Is 6ES5421-8MA12 a 32-channel input module?＋

No. 6ES5421-8MA12 has eight inputs. Do not confuse it with other SIMATIC S5 digital input articles that have different channel counts.

What should be checked when installing 6ES5421-8MA12?＋

Check the full 6ES5421-8MA12 order number, rack position, eight-channel wiring and 24 V DC supply. Preserve the station configuration during replacement planning.

What details support an accurate 6ES5421-8MA12 order?＋

Send the complete 6ES5421-8MA12 article number, quantity, station type and clear module nameplate and connector photos.

CONTACT PRODUCT SPECIALIST

Check your configuration with Frida

Share the full Siemens 6ES5421-8MA12 article number, installed S5 or ET station, eight-channel 24 V DC wiring, nameplate and quantity for configuration checking.

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DATA SHEET

Product Information for
6ES5421-8MA12

Product information and support route for the exact Siemens article number 6ES5421-8MA12.

Official manufacturer record

Siemens SiePortal identifies 6ES5421-8MA12 as a Digital Input 421 module with eight non-isolated 24 V DC inputs. No exact manufacturer-hosted datasheet PDF was verified.

CONTACT FRIDA FOR DOCUMENTATION

Contact to Get Support

Send the complete model, quantity, and your technical or purchasing question.

Siemens SiePortal exact 6ES5421-8MA12 product page.

MODEL IDENTIFICATION

Exact Siemens reference for 6ES5421-8MA12

6ES5421-8MA12 is the complete Siemens article number for a Digital Input 421 module with eight non-isolated 24 V DC inputs.

Siemens · BRAND
Siemens SIMATIC S5Digital Input 421 Module
EXACT ARTICLE NUMBER

6ES5421-8MA12

Match the complete 6ES5421-8MA12 article number to the documented listed S5 or ET station and eight-channel 24 V DC input wiring.

Product identification: Siemens SIMATIC S5 Digital Input 421 module with eight non-isolated 24 V DC inputs, article number 6ES5421-8MA12.
APPLICATION AREAS

Application functions for 6ES5421-8MA12

Discrete Input ReadingEight 24 V DC digital input signals
SIMATIC S5 SystemsInput service in listed S5-90U, S5-95U and S5-100U stations
INDUSTRIAL AUTOMATION APPLICATIONS 6ES5421-8MA12 SIMATIC S5 · Digital Input 421
ET Remote I/OInput use in listed ET 100U and ET 200U systems
Field Wiring ReviewChecking non-isolated 24 V DC channel connections
ABOUT MOORE AUTOMATION

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Moore Automation Limited supplies industrial automation spare parts to customers worldwide, with dedicated sourcing, part-number verification, pre-shipment confirmation and responsive sales support.

Global sourcing Pre-shipment verification One-year warranty
SERVICE

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A clear workflow for sourcing, verification, shipment preparation, delivery and product assurance.

STAGESERVICE ACTIONWHAT WE CHECK OR PROVIDE
01PROCUREMENT
Product SourcingCurrent, hard-to-find and discontinued industrial automation parts.
02VERIFICATION
Part Number ReviewComplete model, suffix, nameplate, visible revision and application details.
03CONFIRMATION
Pre-Shipment CheckModel, label, condition and packaging confirmed with actual photos or video.
04FULFILLMENT
Global Delivery
Worldwide delivery with flexible shipping options. We support door-to-door pickup or delivery to your nominated freight forwarder in China.
DHLFedExUPSTNT
05ASSURANCE
One-Year WarrantyOne-year warranty from delivery for products supplied by Moore Automation.
Warranty Claim Information＋
What to provide: If a product-related issue occurs within the warranty period, contact our team and submit one clear, continuous video for review.
✓Complete product and nameplate
✓Power supply and wiring connections
✓Installation and operating conditions
✓Indicator lights, alarms or error messages
✓Clear description of the fault
✓Continuous video showing the issue
Review outcome: If the evidence confirms a covered product fault, Moore Automation will arrange the appropriate warranty solution.
SALES ASSISTANCE

Contact Sales Manager Frida

Include the complete part number, quantity and delivery destination.

EMAILsales5@mooreplc.com WHATSAPP+86 153 5940 8275
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HEISSE TAGS : 6ES5421-8MA12 Siemens 6ES5421-8MA12 6ES5421-8MA12 421 Digital Input Module Siemens 6ES5421-8MA12 Supplier 6ES5421-8MA12 Price Buy Siemens 6ES5421-8MA12
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Thema : Siemens 6ES5421-8MA12 SIMATIC S5 421 Digital Input Module
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