SIEMENS 6ED1055-1MB00-0BA1 Digital I/O Expansion Module – LOGO! DM8 12/24R Series
When a LOGO! logic module runs out of I/O capacity mid-project, production lines stall, commissioning deadlines slip, and engineering teams scramble for workarounds. The SIEMENS 6ED1055-1MB00-0BA1 LOGO! DM8 12/24R Digital Expansion Module eliminates that bottleneck entirely — snapping directly onto the base unit to deliver eight additional I/O points without rewiring, without a new controller, and without compromising the compact footprint that makes LOGO! the preferred choice for space-constrained panels.
Within the LOGO! 8 expansion ecosystem, the DM8 12/24R occupies a critical mid-range position: it supports both 12 V DC and 24 V DC/AC signal levels, making it uniquely versatile across mixed-voltage installations. Globally, the LOGO! platform is deployed in millions of small automation applications — from building management and pump control to conveyor interlocking and HVAC sequencing — and the 6ED1055-1MB00-0BA1 is one of the most specified expansion modules in that portfolio, trusted by OEMs and system integrators across Europe, Asia, and the Americas.
Technical Specifications
- Part Number: 6ED1055-1MB00-0BA1
- Series: SIEMENS LOGO! DM8 12/24R
- Digital Inputs: 4 × DI (12/24 V DC or 24 V AC)
- Digital Outputs: 4 × DO (relay, max. 10 A / 250 V AC)
- Supply Voltage: 12 V DC / 24 V DC / 24 V AC
- Connection Method: Direct plug-in expansion bus (no external wiring)
- Mounting: DIN rail (35 mm)
- Protection Rating: IP20
- Operating Temperature: 0 °C to +55 °C
- Storage Temperature: −40 °C to +70 °C
- Dimensions (W × H × D): 36 × 90 × 58 mm
- Weight: approx. 170 g
- Certifications: CE, UL, cULus, RCM
- Compatible Base Units: LOGO! 8 (0BA8 series)
Key Features & Benefits
- Dual-voltage input flexibility: Accepts 12 V DC and 24 V DC/AC signals on the same module, reducing the need for signal converters in mixed-voltage panels.
- Relay outputs for direct load switching: Four relay contacts rated up to 10 A allow direct control of motors, solenoids, and lighting without intermediate relays.
- Tool-free bus connection: The integrated expansion connector mates directly with the LOGO! base unit — no additional bus cables, no extra terminals, no wiring errors.
- Compact DIN-rail form factor: At only 36 mm wide, the DM8 12/24R adds eight I/O points while consuming minimal panel space.
- Hot-swap compatible design: Supports replacement during maintenance windows with minimal system disruption.
- Proven global reliability: Manufactured to SIEMENS quality standards with full CE, UL, and RCM certification for worldwide deployment.
Industry & Equipment Applications
- Building Automation: Lighting control, HVAC sequencing, access control interlocking
- Water & Wastewater: Pump station control, level monitoring, valve actuation
- Food & Beverage: Conveyor sequencing, filling line control, CIP cycle management
- OEM Machinery: Packaging machines, labeling systems, small press controls
- Energy Management: Generator control panels, load-shedding systems, solar inverter interlocking
- Retail & Commercial: Refrigeration control, escalator safety circuits, signage automation
System Integration & Compatible Parts
The 6ED1055-1MB00-0BA1 is designed to work seamlessly within the LOGO! 8 ecosystem. Compatible and frequently co-ordered components include:
- LOGO! 8 Base Units: 6ED1052-1MD08-0BA1, 6ED1052-1CC08-0BA1, 6ED1052-1FB08-0BA1
- Analog Expansion Modules: 6ED1055-1CB10-0BA2 (AM2), 6ED1055-1MD00-0BA1 (DM16)
- LOGO! Power Supply: 6EP1331-1SH03 (24 V DC / 1.3 A)
- LOGO! TDE Display: 6ED1055-4MH08-0BA1
- Communication Module: 6ED1055-1HB00-0BA2 (LOGO! CMR2020)
Contact our technical team at support@konmask.com for system architecture advice and BOM verification.
Our Quality Assurance Process
Every SIEMENS 6ED1055-1MB00-0BA1 unit sourced through Konmask.com undergoes a structured verification process before dispatch:
- Authenticity check: Hologram labels, date codes, and packaging integrity verified against SIEMENS factory standards.
- Visual inspection: PCB, connector pins, and housing inspected for transit damage or counterfeit indicators.
- Documentation: Each shipment includes a packing list with batch/lot traceability data available on request.
- Secure packaging: Anti-static bags, foam inserts, and double-wall cartons protect units during international freight.
How to Order
- Submit an inquiry via the “Request a Quote” button on this page, or email support@konmask.com directly.
- Provide your required quantity, delivery destination, and any lead-time requirements.
- Receive a formal quotation within 1 business day (typically within hours for standard stock items).
- Confirm the order and receive a proforma invoice with payment and shipping options.
- Shipment dispatched with tracking number and commercial invoice for customs clearance.
We support T/T bank transfer, PayPal, and other B2B payment methods. Minimum order quantity: 1 unit.
Why Choose Konmask.com?
- Specialist industrial focus: We stock and source PLC modules, DCS components, and automation hardware — not consumer electronics. Your inquiry reaches engineers, not generalists.
- Global supply capability: We ship to 60+ countries with experience in export documentation, customs compliance, and international freight coordination.
- Competitive lead times: Established supplier relationships allow us to source hard-to-find or obsolete part numbers that distributors no longer stock.
- Transparent communication: You receive honest stock status, realistic lead times, and proactive updates — no overpromising.
- After-sales support: Technical questions, compatibility checks, and warranty claims handled by our engineering-background team.
Frequently Asked Questions
Q: Is the 6ED1055-1MB00-0BA1 compatible with LOGO! 7 (0BA7) base units?
A: No. The 0BA1 suffix indicates this module is designed for the LOGO! 8 (0BA8) generation. LOGO! 7 uses a different expansion bus and is not electrically or mechanically compatible.
Q: How many DM8 12/24R modules can be connected to a single LOGO! 8 base unit?
A: LOGO! 8 supports up to 24 additional I/O points via expansion modules, which typically allows up to 3 DM8 modules depending on the base unit variant and total I/O count.
Q: Can the relay outputs switch DC loads?
A: Yes. The relay contacts are potential-free and can switch both AC and DC loads within the rated current and voltage limits. Consult the SIEMENS LOGO! DM8 manual for derating curves on DC inductive loads.
Q: Do you supply original SIEMENS product or compatible alternatives?
A: Konmask.com supplies original SIEMENS-branded product only. We do not sell third-party compatible or clone modules.
Q: What is the typical delivery time for international orders?
A: Standard international shipments take 5–10 business days via express courier (DHL/FedEx/UPS). Economy freight options are available for larger orders. Contact us for a specific lead-time estimate based on your destination.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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