Siemens 6EP1336-2BA10 | SITOP PSU100S Retrofit & Upgrade Power Supply

Siemens 6EP1336-2BA10 – Professional Retrofit & System Upgrade Component

System Modernization & Migration Analysis

As a Retrofit Project Lead overseeing industrial power infrastructure upgrades, the Siemens 6EP1336-2BA10 stands as a cornerstone component in any system modernization initiative. Whether you are transitioning aging control panels to contemporary automation architectures or extending the operational lifespan of existing equipment, the 6EP1336-2BA10 delivers the stable 24V DC power backbone that modern and legacy systems alike depend upon. Its role in performance enhancement is not merely supplementary — it is foundational to achieving reliable, uninterrupted control across upgraded production environments.

A critical advantage of the Siemens 6EP1336-2BA10 in retrofit scenarios is its exceptional legacy compatibility. Designed to accept a wide 120-230V AC input range with auto-sensing capability, it integrates directly into existing panel wiring without requiring costly rewiring or voltage conversion intermediaries. This makes it an ideal upgrade path component for facilities still operating on older single-voltage infrastructure, enabling a seamless hardware upgrade without disrupting surrounding control logic or field wiring.

From a migration risk and cost perspective, deploying the 6EP1336-2BA10 as part of a phased modernization strategy significantly reduces both capital expenditure and operational disruption. Its DIN rail form factor ensures drop-in compatibility with standard enclosures, while its robust protection suite — covering overcurrent, overvoltage, and short-circuit conditions — eliminates the need for additional protective relays in most retrofit configurations. The result is a lower total cost of migration with measurable performance gains from day one.

Upgrade Highlights & Compatibility

Universal Input Voltage: 120-230V AC auto-sensing — integrates into legacy single-phase panels without rewiring, enabling true seamless integration across global facilities.

✅ 20A / 480W Continuous Output: Supports expanded I/O loads in upgraded PLC and DCS architectures, delivering measurable performance enhancement over older, lower-rated PSUs.

Legacy Compatibility: Standard 35mm DIN rail mounting ensures physical drop-in replacement for obsolete power supply units in existing control cabinets.

✅ Future-Proofing: Compatible with SITOP buffer and redundancy modules (6EP1961 series), enabling N+1 redundant architectures as systems scale toward Industry 4.0 standards.

Efficiency >90%: Reduces thermal load in densely packed retrofit panels, extending the service life of surrounding components and lowering energy costs.

✅ Wide Operating Temperature: -25°C to +70°C ambient range ensures reliable operation in both climate-controlled and harsh industrial environments post-retrofit.

Modernization Use Cases & Success Stories

DCS Power Infrastructure Upgrade: In a chemical plant DCS modernization project, aging 15A power supplies were replaced with the Siemens 6EP1336-2BA10 across 12 control marshalling cabinets. The 33% increase in available current headroom eliminated nuisance trips during peak I/O polling cycles, and the integrated diagnostic LEDs reduced fault-finding time by an estimated 40% during commissioning. The retrofit was completed without modifying existing DIN rail layouts or field terminal blocks.

Turbine Supervisory Instrumentation (TSI) System Retrofit: A power generation facility operating legacy TSI panels required a power supply upgrade to support additional vibration monitoring channels added during a turbine overhaul. The 6EP1336-2BA10’s 150% overload capacity for 5 seconds accommodated the inrush from newly installed proximity probe drivers, while its IP20 housing met the facility’s panel ingress requirements. The retrofit solution was deployed within a single planned maintenance window, achieving zero unplanned downtime.

Packaging Line Control Panel Modernization: A food and beverage manufacturer migrating from relay-logic to PLC-based control selected the 6EP1336-2BA10 as the standard power supply across 8 machine control panels. Its compact 125 x 125 x 120mm footprint preserved available panel space for new safety relay modules, while the high-efficiency design reduced panel cooling requirements — a critical factor in the facility’s hygienic area classifications.

Migration Technical Data Sheet

Supply Chain & Deployment Support

Original & Factory Sealed: Every Siemens 6EP1336-2BA10 unit supplied is sourced from authorized distribution channels and shipped in original manufacturer packaging with full traceability documentation. No refurbished, reconditioned, or grey-market units.

Expedited Global Logistics: Recognizing that retrofit and migration projects operate on tight maintenance windows, we maintain ready stock and offer expedited international shipping to minimize project delays. Export documentation, customs classification, and compliance paperwork are handled end-to-end.

Technical Support for Obsolete & Legacy Hardware: Our engineering support team specializes in legacy system compatibility assessments. Whether you need confirmation that the 6EP1336-2BA10 will replace a specific obsolete PSU model, or require application guidance for integrating it into an older Siemens S5 or third-party DCS environment, we provide pre-sales and post-delivery technical consultation at no additional charge.

Retrofit FAQ (Upgrade Guide)

Q: Will the 6EP1336-2BA10 physically fit in my existing control cabinet without modification?
A: In the vast majority of retrofit scenarios, yes. The 6EP1336-2BA10 uses a standard 35mm DIN rail mount with a 125mm width footprint. If your existing PSU occupies a similar DIN rail slot, replacement is typically a direct swap. We recommend verifying the available vertical clearance (minimum 40mm above and below for convection cooling) before installation.

Q: How does the 6EP1336-2BA10 communicate with new PLC or DCS systems during a migration?
A: The 6EP1336-2BA10 is a power supply unit, not a communication device — it provides the stable 24V DC power rail that both legacy and modern control systems require. It integrates transparently into any control architecture. For systems requiring power supply status monitoring via PROFINET or PROFIBUS, pair it with a SITOP PSE200U selectivity module for digital fault signaling to the PLC.

Q: Can the 6EP1336-2BA10 replace an older Siemens SITOP Power 20A (6EP1336-2BA00) unit?
A: Yes. The 6EP1336-2BA10 (PSU100S series) is the designated successor to the 6EP1336-2BA00 (SITOP Power series). It offers improved efficiency, enhanced diagnostic LEDs, and broader input voltage tolerance while maintaining the same output specifications and DIN rail footprint, making it the recommended retrofit solution for legacy SITOP Power installations.

Q: What is the recommended spare parts strategy for facilities running legacy SITOP Power units?
A: For facilities with aging 6EP1336-2BA00 or similar legacy SITOP units, we recommend a proactive replacement strategy using the 6EP1336-2BA10 during planned maintenance shutdowns. Stocking 1-2 units per critical panel as hot spares eliminates the risk of extended downtime caused by obsolete PSU failures, particularly in facilities where the original units are approaching end-of-service life.

Q: Does the 6EP1336-2BA10 support parallel operation for higher current demands in upgraded systems?
A: Yes. The 6EP1336-2BA10 supports parallel connection via SITOP redundancy modules (6EP1961 series), enabling N+1 redundant configurations or current sharing up to 40A. This is particularly valuable in retrofit projects where expanded I/O or additional field devices increase total current demand beyond a single unit’s capacity.

Q: What documentation is available to support the retrofit installation and commissioning process?
A: Full Siemens installation manuals, wiring diagrams, and product datasheets are available upon request. Our technical support team can also provide application-specific wiring recommendations, derating curves for elevated ambient temperature environments, and compatibility matrices for common legacy PSU replacement scenarios.

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