Siemens 6AR1306-0DC00-0AA0 Rack Power Supply Module – 24 V DC Input, 10 A Class for SIMADYN D PM4/PM5 & S5-135U

Technical Specifications

Main Features and Advantages

The Siemens 6AR1306-0DC00-0AA0​ delivers a combination of rugged rack-level power integrity and niche DC-input flexibility that the broader AC-input 6AR1 siblings cannot substitute. Its defining advantage is the 24 V DC input tolerance window of 20.4–28.8 V DC, which aligns directly with marine 24 V DC ship’s buses, offshore 24 V DC UPS-distributed E-houses, and utility-grade DC plant distributions—environments where installing 120/230 V AC isolation transformers at every SIMADYN D cabinet would add cost, footprint, and a single-point-of-failure layer that operators prefer to avoid.Rated in the 10 A output class, the Siemens 6AR1306-0DC00-0AA0​ regulates the three backplane rails (5 V DC and ±15 V DC) that PM4/PM5 CPUs, signal processing modules, and communication daughter cards draw from. This tri-rail architecture is a SIMADYN D hallmark, and the 1306’s 10 A headroom comfortably supports a fully populated PM5 rack with processor, multiple I/O, and fiber-optic communication modules—where the lower-tier 1301 (2 A) or 1302 (5 A) units would be under-sized. For S5-135U central racks deployed in 24 V DC plants, the same 10 A class translates to stable rail voltage even during motor-start inrush events on the same DC bulk, provided the upstream 24 V DC string is correctly sized.Diagnostics are purposefully simple but effective: a front-panel two-LED cluster gives green=OK and red=fault without requiring the technician to pull the rack door or open software. The protection suite—short-circuit, overload, over-temperature—auto-recovers when the fault clears, reducing nuisance downtime on transient events. Passive cooling removes the failure mode of a dedicated supply fan, deferring thermal management to the rack’s own airflow path, which in turn simplifies spare-strategy logistics: one Siemens 6AR1306-0DC00-0AA0​ per PM4/PM5 rack type on the shelf is the industry-standard baseline for SIMADYN D plants.From a lifecycle standpoint, SIMADYN D is Siemens-maturity/legacy, with successors being SINAMICS DCM and S120 for greenfield drives and SIMIT/TDC for high-end motion—but the installed base is enormous in steel rolling, hydro, marine, and cement. The Siemens 6AR1306-0DC00-0AA0​ is therefore not a commodity buy; it is a strategic spare whose availability directly correlates with avoiding unplanned SIMADYN D rack outages on lines where a single stoppage costs five-figure sums per hour.

Application Field

The Siemens 6AR1306-0DC00-0AA0​ is deployed wherever a SIMADYN D PM4 or PM5 processor rack—or an S5-135U central rack—must be fed from a 24 V DC plant bus rather than local 120/230 V AC. The primary habitat is marine and offshore: cargo vessels, offshore supply vessels, and drilling-platform E-houses commonly distribute 24 V DC from a central battery/UPS string to the DCS and drive-relay rooms, and the Siemens 6AR1306-0DC00-0AA0​ slots directly into that architecture without requiring a step-up inverter at every cabinet. In these environments the module’s 20.4–28.8 V DC input window tolerates the voltage sag and surge inherent to battery-transition and generator-switching events.A second major application band is utility and telecom sites where the relay/DCS room is fed from the same 24 V DC bulk that powers protection relays and DC-powered network gear. Here the Siemens 6AR1306-0DC00-0AA0​ reduces cabinet-level AC wiring, eliminates small isolation transformers, and consolidates failure modes onto a single monitored DC plant.The third and largest-volume band is the legacy SIMADYN D installed base itself: hot-strip and cold-strip rolling mills, plate mills, hydro generator excitation and speed-governor racks, cement kiln drives, and test-stand dynamometers. Although many of these plants do run 120/230 V AC cabinet feeds and thus use the AC-input 6AR1 siblings, a non-trivial subset—particularly retrofitted marine-motion simulators, dock-side test stands, and offshore-located drive skids—specified 24 V DC from the outset. For these, the Siemens 6AR1306-0DC00-0AA0​ is the correct and non-interchangeable spare; fitting an AC-input 6AR1301/1302 by mistake will not operate on a 24 V DC bulk. S5-135U central racks in similar DC-fed environments round out the application map, especially in Eastern European and CIS plants where S5-135U + 24 V DC UPS combinations were a common late-1980s/1990s specification that remains in service.