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Siemens LOGO! DM8 12/24R expansion module, four inputs four outputs, relay terminals

SIEMENS

SIEMENS 6ED10551MB000BA2 I/O Module 4 In 4 Out 12/24VDC

SKU CH-FF5M-JS0JE

Expands a logic controller with four 12/24 VDC inputs and four relay outputs using the LOGO! DM8 module

  • Expands I/O capacity with four inputs and four outputs
  • Operates on 12/24 VDC power for flexible integration
  • Adds relay switching via LOGO! DM8 12/24R expansion module
  • Compatible with multiple LOGO! base units including 6ED10521MD000BA8 and 6ED10522MD000BA8
  • New condition ensures reliable performance from first installation

SIEMENS I/O Module 4 In 4 Out

The SIEMENS 6ED10551MB000BA2 is an input/output expansion module designed for LOGO! logic controllers. It adds four digital inputs and four relay outputs to a base unit. The module operates on a 12/24 VDC power supply. It is intended for automation tasks requiring additional I/O capacity.

Capacity and headroom for four channels

The unit provides exactly four inputs and four relay outputs for switching loads. This configuration suits small-scale control applications with limited signal counts. Headroom ends at the fixed channel count; projects needing more than four inputs or outputs require additional modules. The relay outputs handle switching duties within the module's specified electrical ratings.

Relay outputs and compatible base units

The module features relay output contacts for direct load switching. It connects to compatible LOGO! base units including the 6ED10521MD000BA8, 6ED10522MD000BA8, 6ED10521HB000BA8, 6ED10522HB000BA8, 6ED10521CC010BA8, 6ED10522CC010BA8 and 6ED10580BA080YA1. The DM8 12/24R expansion module is included. Build quality follows SIEMENS industrial standards for DIN rail mounting.

How it compares

Measured against everything we stock in Rackmount PDUs, at today’s prices. Recalculated every night.

Price $123.99
Cheaper than about 82% of the 643 comparable items (median $451.99).

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Specifications

Product
Brand nameSIEMENS

Questions about this item

Will the 6ED10551MB000BA2 module connect to my existing LOGO! 6ED10521MD000BA8 base unit?

Yes, the module is listed for use with the 6ED10521MD000BA8 and several other LOGO! base units including 6ED10522MD000BA8, 6ED10521HB000BA8, 6ED10522HB000BA8, 6ED10521CC010BA8, 6ED10522CC010BA8 and 6ED10580BA080YA1.

How can I verify the four inputs and four outputs are operating correctly after installation?

Apply 12 or 24 VDC to the power terminals, then activate each input in turn and confirm the corresponding relay output switches; the module’s relay feature provides a physical click and voltage change at each output terminal for direct verification.

Does the box contain the LOGO! DM8 12/24R expansion module or must I order it separately?

The DM8 12/24R expansion module is included with the 6ED10551MB000BA2, so no separate purchase is required for the I/O expansion itself.

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