Industrial automation technical reference
ARAN VISIONفارسی
Siemens6ES7421-1EL00-0AA0

SIMATIC S7-400 SM 421 32-input 120 V AC/DC module / 6ES7421-1EL00-0AA0

Siemens6ES7421-1EL00-0AA0Product image is not available.

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ARAN VISION reference
AV-REF-Siemens-6ES7421-1EL00-0AA0
Category
PLC and HMI
Manufacturer sourcing lead time
Manufacturer confirmation required

Delivery to your location is confirmed separately.

Documents / datasheets
ARAN VISION specification sheet

Technical specifications

Controller family
SIMATIC S7-400
Module designation
SM 421
Digital inputs
32
Digital outputs
0
Rated input
120 V AC/DC
Input isolation group size
8 inputs per group
Isolation check voltage
1500 VAC
Maximum 5 V backplane current (mA)
200
Dimensions (W x H x D)
25 x 290 x 210 mm
Approximate weight (g)
600
Document pages
PDF 54, 55, 56
Current lifecycle status
Not established by historical catalogue; confirm current lifecycle and supply separately
Report a product-data issue

Documents / datasheets

Manufacturer technical catalog · SIMATIC ST 400 / May 2017 · en · PDF · ST 400 / May 2017 / E86060-K4678-A151-A1-7600Manufacturer source: Siemens · Model explicitly covered in family document · Covered models: 6ES7421-1EL00-0AA0 · Checked: 2026-10-22View / print the ARAN VISION specification sheetOfficial manufacturer source · Siemens

Source reviewed: 2026-10-22

Description

6ES7421-1EL00-0AA0: SM 421 digital input module with 32 inputs. Input voltage and isolation group size follow the exact manufacturer column. Confirm configuration and current supply separately.

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Products in the same technical family

Category similarity does not establish compatibility or replacement suitability.

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6DD1681-0EB3

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Voltage - Input: 24/48 VDCSignal conversion: 24/48 VDC to 24 VDC

Technical specificationsManufacturer technical catalog · Siemens ST400 May 2017; exact technical/ordering row, PDF 87 · en · PDF · May 2017Manufacturer source: Siemens · Model explicitly covered in family document · Covered models: 6DD1681-0EB3 · Checked: 2026-10-22Manufacturer technical catalog · Siemens ST70 2021; SB61 exact ordering row PDF 1431 (11/5), overview PDF 1443 (11/17), ordering PDF 1445 (11/19) · en · PDF · ST70 2021Manufacturer source: Siemens · Model explicitly covered in family document · Covered models: 6DD1681-0EB3 · Checked: 2026-10-22