SIEMENS 6ES5441-4UA12 Digital Output Module | Replacement, Equivalent & Selection Guide
The SIEMENS 6ES5441-4UA12 is a 16-channel digital output module designed for the SIMATIC S5 programmable logic controller (PLC) series. It delivers reliable 24 VDC transistor outputs for industrial automation applications requiring precise, high-speed digital signal control. This page provides full technical specifications, compatible replacements, equivalent models, and a structured selection guide to help engineers and procurement teams make informed sourcing decisions.
Technical Specifications
- Part Number / SKU: 6ES5441-4UA12
- Manufacturer: SIEMENS
- Series: SIMATIC S5
- Module Type: Digital Output Module (DO)
- Number of Outputs: 16 channels
- Output Voltage: 24 VDC
- Output Type: Transistor (sourcing)
- Output Current per Channel: 0.5 A
- Total Output Current: 4 A (per group)
- Isolation: Optocoupler isolation between field and logic side
- Backplane Bus: SIMATIC S5 parallel bus
- Power Supply: 24 VDC (via backplane)
- Operating Temperature: 0 °C to +60 °C
- Storage Temperature: −40 °C to +70 °C
- Dimensions (W×H×D): Standard S5 single-width module
- Weight: Approx. 1,450 g (packaged)
- Protection Class: IP20
- Certifications: CE, UL (refer to original datasheet for full listing)
Compatible Replacement & Equivalent Models
The following modules are commonly evaluated as replacements or equivalents for the 6ES5441-4UA12. Always verify electrical and mechanical compatibility before substitution:
- SIEMENS 6ES5441-4UA13 — Revised hardware version; functionally equivalent, same channel count and voltage rating
- SIEMENS 6ES5441-4UA11 — Earlier revision; compatible in most S5 racks with identical wiring
- SIEMENS 6ES7322-1BH01-0AA0 — S7-300 series 16-DO 24VDC module; requires S5→S7 migration adapter or full rack upgrade
- SIEMENS 6ES7322-1BH10-0AA0 — S7-300 upgraded DO module; suitable for modernization projects
- Third-party S5-compatible DO modules — Various OEM manufacturers offer pin-compatible replacements; confirm bus timing and current ratings
Note: Cross-referencing part numbers does not guarantee drop-in compatibility. Consult wiring diagrams and system documentation before replacement.
Why Choose the Original Model
- Proven Reliability: The 6ES5441-4UA12 has decades of field-proven performance in demanding industrial environments.
- OEM Compatibility: Guaranteed fit and function within SIMATIC S5 racks — no firmware or configuration changes required.
- Stable Signal Integrity: Optocoupler isolation minimizes noise interference in high-EMI environments such as motor drives and welding lines.
- Reduced Commissioning Risk: Using the original part eliminates compatibility unknowns, reducing downtime risk during maintenance.
- Spare Parts Availability: Konmask.com maintains stock of tested, verified units sourced from reputable industrial channels.
Typical Applications
- Discrete manufacturing lines (automotive, electronics assembly)
- Conveyor and material handling systems
- Packaging and labeling machinery
- Water treatment and pump control panels
- Building automation and HVAC control systems
- Legacy S5-based plant upgrades and maintenance
System Compatibility
- Compatible PLC Racks: SIMATIC S5-115U, S5-135U, S5-155U
- Compatible CPUs: S5 CPU 941, 942, 943, 944, 945, 946, 947, 948
- Bus Interface: S5 parallel I/O bus (not compatible with PROFIBUS or PROFINET without gateway)
- Programming Software: STEP 5 (S5 native); migration to TIA Portal requires hardware upgrade
- Power Supply Modules: Compatible with standard S5 PS 951, PS 955 power supplies
Selection Guide
Use the criteria below to confirm the 6ES5441-4UA12 is the right module for your application, or to identify a suitable alternative:
- Step 1 — Confirm PLC Series: Verify your rack is SIMATIC S5. If migrating to S7-300/S7-400/S7-1500, select the corresponding S7 DO module instead.
- Step 2 — Count Output Channels: The 6ES5441-4UA12 provides 16 DO channels. If you need 8 or 32 channels, consider 6ES5431-4UA12 (8-ch) or dual-module configurations.
- Step 3 — Verify Output Voltage: This module outputs 24 VDC. For 120/230 VAC output requirements, select a relay output module (e.g., 6ES5451 series).
- Step 4 — Check Current Rating: Maximum 0.5 A per channel. For higher-current loads (solenoids, contactors >0.5 A), use an external relay or select a higher-current DO module.
- Step 5 — Assess Isolation Requirements: Optocoupler isolation is standard. For applications requiring group isolation or individual channel isolation, review alternative module families.
Quality Assurance & Sourcing
- All units sold by Konmask.com are sourced from verified industrial distributors and authorized surplus channels.
- Each module undergoes visual inspection and functional verification prior to shipment.
- Original SIEMENS packaging and labeling preserved where available.
- Traceability documentation available upon request for MRO and OEM procurement teams.
- Warranty: 90-day replacement warranty against manufacturing defects (see full policy at Konmask.com/policies).
How to Order
- SKU: 6ES5441-4UA12
- Add to cart directly on this page, or contact us for bulk/project pricing.
- Lead Time: In-stock units ship within 1–3 business days. Out-of-stock lead time: 7–21 business days depending on sourcing.
- Shipping: Worldwide shipping available. DHL, FedEx, UPS express options supported.
- Payment: T/T (bank transfer), PayPal, credit card accepted.
- Request a Quote: Email support@konmask.com with your project BOM for volume pricing.
Replacement & Compatibility FAQ
Q: Can I replace 6ES5441-4UA12 with 6ES5441-4UA13?
A: Yes, in most cases. The -4UA13 is a later hardware revision with the same functional specification. Verify your STEP 5 configuration file does not reference hardware-revision-specific parameters.
Q: Is the 6ES5441-4UA12 compatible with S7-300 racks?
A: No. The S5 parallel bus is not electrically or mechanically compatible with S7-300 backplanes. A full rack and CPU upgrade is required for S7 migration.
Q: Can I use a third-party replacement module?
A: Third-party S5-compatible DO modules exist, but bus timing tolerances and output driver characteristics may differ. Test thoroughly before production deployment.
Q: What is the difference between 6ES5441 and 6ES5451 series?
A: The 6ES5441 series provides transistor (DC) outputs; the 6ES5451 series provides relay outputs suitable for AC loads. Select based on your field device voltage requirements.
Q: How do I verify the module is genuine SIEMENS?
A: Check the SIEMENS holographic label, part number engraving on the PCB, and request a certificate of conformity from your supplier. Konmask.com provides sourcing documentation on request.
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