{"product_id":"yokogawa-spw481-high-capacity-24v-dc-dcs-power","title":"Yokogawa SPW481 | High-Capacity 24V DC DCS Power","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eYokogawa SPW481\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(specifically the high-spec\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSPW481-53 Style S1\u003c\/strong\u003e) functions as the heavy-duty power interface for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCENTUM VP\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCS 3000\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDistributed Control Systems. This rack-mountable module converts 100-120V AC input into stable, regulated 24V DC power to drive high-density I\/O racks and system processors. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e, featuring advanced ISA Standard G3 conformal coating to withstand corrosive industrial gases and extreme humidity.\u003c\/p\u003e\n\u003ch3\u003ePart Number Breakdown: SPW481 Series\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSuffix Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSPW481\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBase Model: 100-120 V AC Input Power Supply Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e-5\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStandard type with no explosion protection\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e-3\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWith ISA Standard G3 option and wide temperature range (-20°C to 70°C)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eS1\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStyle 1 Revision: Optimized internal circuitry for high-load stability\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eYokogawa Electric Corporation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSPW481-53 S1\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100–120 V AC (50\/60 Hz)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24 V DC (Regulated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e~240 Watts (High Capacity)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eEfficiency\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e≥ 85%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProtection Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOver-voltage, Over-current, Short-circuit protection\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCooling Method\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNatural convection (Fanless design)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRedundancy Support\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eYes, supports dual redundant operation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-20 °C to +70 °C (With G3 Option)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5.1 cm x 20.3 cm x 14.6 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.9 kg (Net) \/ 1.5 kg (Shipping)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eISA G3 Corrosion Resistance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe SPW481-53 variant includes ISA Standard G3 conformal coating. This chemical-resistant layer protects internal components from corrosive gases like Hydrogen Sulfide (\u003cspan class=\"math-inline\"\u003e$H_2S$\u003c\/span\u003e) and Chlorine (\u003cspan class=\"math-inline\"\u003e$Cl_2$\u003c\/span\u003e), ensuring long-term reliability in petrochemical and wastewater treatment facilities.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Capacity 240W Throughput:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUnlike lower-tier modules, the SPW481 delivers a robust\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e240W output\u003c\/strong\u003e. This capacity allows a single module pair to power an entire DCS rack populated with high-consumption analog I\/O cards, reducing the total hardware footprint and simplifying power distribution.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExtreme Temperature Resilience:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEngineered for harsh environments, the module operates reliably across a wide temperature spectrum from\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e-20 °C to +70 °C\u003c\/strong\u003e. This stability eliminates the need for expensive cabinet cooling systems in many outdoor RTU and substation applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFanless Maintenance-Free Operation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module utilizes natural convection for cooling. By removing mechanical fans, Yokogawa eliminates a common failure point and prevents the intake of airborne contaminants into the power circuitry, significantly increasing the Mean Time Between Failures (MTBF).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDeterministic Redundancy:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe SPW481 supports active 1:1 redundancy with load sharing. In the event of an AC line failure or internal module fault, the redundant partner assumes the full electrical load instantaneously, ensuring the DCS processor continues to execute critical control logic without a reset.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the SPW481 in a 220V AC system?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The SPW481 is specifically designed for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100-120V AC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003enominal input. For 220-240V AC applications, you must use the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSPW482\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emodel to prevent hardware damage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Style S1 module backward compatible?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The Style S1 revision maintains full mechanical and electrical compatibility with older Yokogawa backplanes while offering improved thermal management and transient protection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the hot-swap feature benefit maintenance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn a redundant configuration, you can extract a faulty SPW481 and insert a new module while the system remains live. The DCS continues to operate on the secondary module, allowing for \"zero-downtime\" repair.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhy should I avoid \"Pre-owned\" or \"Used\" SPW481 modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePower supply modules rely on electrolytic capacitors that degrade with age and heat exposure. Used units often suffer from \"capacitor dry-out,\" leading to increased voltage ripple and potential logic corruption. A\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSPW481 ensures you receive fresh components with a full service life and the guaranteed protection of the ISA G3 coating.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43224968822874,"sku":"SPW481","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/220._450f793c-cc52-4f10-b4ea-627f0a9d03be.jpg?v=1776390495","url":"https:\/\/www.spareoil.com\/products\/yokogawa-spw481-high-capacity-24v-dc-dcs-power","provider":"SpareOil Automation","version":"1.0","type":"link"}