Siemens 6ED1055-1HB00-0BA2 LOGO! DM8 24R Expansion Module 4DI/4DO 24V Relay

The Siemens 6ED1055-1HB00-0BA2 is a LOGO! DM8 24R digital expansion module designed for use with LOGO! 8 logic modules. It adds 4 digital inputs (AC/DC/NPN) and 4 relay digital outputs to extend the I/O capacity of a LOGO! 8 system. Supply voltage is 24 V AC/DC and outputs switch up to 5 A resistive load per relay contact.

Technical specifications:

• MLFB: 6ED1055-1HB00-0BA2
• Manufacturer: Siemens
• Product line: LOGO!
• Supply voltage (DC): 24 V DC, range 20.4 - 28.8 V
• Supply voltage (AC): 24 V AC, 47 - 63 Hz
• Digital inputs: 4, type AC/DC/NPN
• Input signal "0": < 5 V AC/DC
• Input signal "1": > 12 V AC/DC
• Digital outputs: 4 relay outputs
• Output current (rated): 5 A (resistive), 3 A (inductive)
• Minimum load current: 100 mA
• Lamp load switching capacity: 1000 W max.
• Switching frequency: 2 Hz (resistive), 0.5 Hz (inductive), 10 Hz (mechanical)
• IP rating: IP20
• Operating temperature: -20 °C to +55 °C (no condensation)
• Mounting: 35 mm DIN rail, 2 spacing units wide
• Dimensions (WxHxD): 35.5 x 90 x 58 mm
• Standards: IEC 61131, VDE 0631, EN 55011 Class B
• Approvals: CE, UL, CSA, FM, Marine (NK, CCS, KR)

Features and benefits:

• Extends LOGO! 8 systems with 4 additional digital inputs and 4 relay outputs in a single 2-unit wide module
• Relay outputs rated at 5 A allow direct switching of resistive loads and lamp circuits up to 1000 W
• Accepts AC/DC/NPN input signals, enabling connection of a wide range of sensors and switches
• Operates across -20 °C to +55 °C, suitable for demanding installation environments
• EN 55011 Class B compliant, approved for use in residential areas without additional filtering
• Marine approvals (NK, CCS, KR) support use in maritime applications

Applications:

• Expanding I/O on LOGO! 8 logic modules in building automation and control panels
• Switching lighting circuits, small motors, or resistive loads via relay outputs in small machine control
• Industrial and commercial HVAC or pump control where additional discrete I/O is required
• Maritime control systems requiring certified expansion modules
• Residential and light commercial automation projects requiring Class B EMC compliance

Compliant with IEC 61131, VDE 0631, and EN 55011 Class B. Part of the Siemens LOGO! range.

Also known as: Siemens 6ED1055-1HB00-0BA2, LOGO! DM8 24R, LOGO! 8 digital expansion module.