{"product_id":"pentair-intellicenter-521903-i8ps-pool-spa-automation-system-8-function-load-center-intellichlor-ic40-salt-cell-2-intellivalve-actuators-legacy-part-number","title":"PENTAIR INTELLICENTER 521903 i8PS POOL \u0026 SPA AUTOMATION SYSTEM – 8 FUNCTION, LOAD CENTER, INTELLICHLOR IC40 SALT CELL, 2 INTELLIVALVE ACTUATORS (LEGACY PART NUMBER)","description":"\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e Pentair IntelliCenter i8PS (Model Code 8PSIC40)\u003cbr\u003e\u003cstrong\u003ePart Number\/SKU:\u003c\/strong\u003e 521903 — legacy part number, superseded by 523961\u003cbr\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Pool \u0026amp; Spa — shared equipment\u003cbr\u003e\u003cstrong\u003eSystem Capacity:\u003c\/strong\u003e 8 functions — filter pump circuit plus 7 auxiliary circuits\u003cbr\u003e\u003cstrong\u003ePanel Type:\u003c\/strong\u003e Load Center with 150 A built-in circuit breaker subpanel\u003cbr\u003e\u003cstrong\u003eSalt System:\u003c\/strong\u003e Included — cell and salt chlorine generator transformer\u003cbr\u003e\u003cstrong\u003eSalt Cell:\u003c\/strong\u003e IntelliChlor IC40\u003cbr\u003e\u003cstrong\u003eActuators Included:\u003c\/strong\u003e 2 IntelliValve valve actuators\u003cbr\u003e\u003cstrong\u003eRemote Control:\u003c\/strong\u003e Pentair Pool app, outdoor wireless antenna included\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003ePentair IntelliCenter 521903 i8PS\u003c\/strong\u003e is the eight-function shared-equipment bundle for a pool and spa served by one pump, filter and heater. It provides a dedicated filter pump circuit plus seven auxiliary circuits, with intake and return valve control built into the personality so pool-to-spa changeover is automated rather than manual.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis is a legacy part number.\u003c\/strong\u003e Pentair's Transition Guide supersedes 521903 with \u003cstrong\u003e523961\u003c\/strong\u003e, and 521903 no longer appears in the current 2025–2026 Pentair catalogue. The reason for the re-numbering is the salt cell: Pentair changed the bundled cell from the IntelliChlor IC40 to the newer IntelliChlor Plus40 (523735), and issued fresh part numbers for the salt bundles only. The system ships in an \u003cstrong\u003eIntelliCenter Load Center\u003c\/strong\u003e with a 150 A built-in circuit breaker subpanel and five pre-installed high-voltage relays, the i8PS personality adding three more for eight total. Both the \u003cstrong\u003esalt chlorine generator transformer\u003c\/strong\u003e and a salt cell are included, along with two \u003cstrong\u003eIntelliValve valve actuators\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA note on the cell.\u003c\/strong\u003e Pentair's own documents are not fully consistent here. The Pentair SKU page, the replacement-parts sheet and the Automation Transition document all describe 521903 as shipping the \u003cstrong\u003eIntelliChlor IC40\u003c\/strong\u003e; the Transition Guide's cell column reads “Yes, ICL Plus40”, though that column most plausibly describes the replacement part number rather than the legacy one. We have listed IC40 on the strength of the three SKU-specific sources, and recommend confirming with your distributor at time of order. Control is otherwise through the IntelliCenter touchscreen and the \u003cstrong\u003ePentair Pool app\u003c\/strong\u003e, with the outdoor wireless antenna included, and the system expands over RS-485 across up to three enclosures for as many as 39 auxiliary circuits.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePool and spa automation from one control system on shared equipment\u003c\/li\u003e\n\u003cli\u003e8 functions — filter pump circuit plus 7 auxiliary circuits\u003c\/li\u003e\n\u003cli\u003eLoad Center with 150 A built-in circuit breaker subpanel\u003c\/li\u003e\n\u003cli\u003eSalt cell and salt chlorine generator transformer both included\u003c\/li\u003e\n\u003cli\u003eTwo IntelliValve valve actuators included for intake and return\u003c\/li\u003e\n\u003cli\u003eOutdoor wireless antenna included\u003c\/li\u003e\n\u003cli\u003ePentair Pool app control with scheduling and remote access\u003c\/li\u003e\n\u003cli\u003eExpandable over RS-485 to as many as 39 auxiliary circuits\u003c\/li\u003e\n\u003cli\u003eLegacy part number — current equivalent is 523961\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\/SKU\u003c\/td\u003e\n\u003ctd\u003e521903 (legacy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eIntelliCenter i8PS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eIntelliCenter Pool Control System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePool \u0026amp; Spa, shared equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Capacity\u003c\/td\u003e\n\u003ctd\u003e8 functions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAux Circuits\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePanel Type\u003c\/td\u003e\n\u003ctd\u003eLoad Center with 150 A built-in breaker subpanel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalt System\u003c\/td\u003e\n\u003ctd\u003eIncluded — cell and transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalt Cell\u003c\/td\u003e\n\u003ctd\u003eIntelliChlor IC40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActuators Included\u003c\/td\u003e\n\u003ctd\u003e2 IntelliValve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote Control\u003c\/td\u003e\n\u003ctd\u003ePentair Pool app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion\u003c\/td\u003e\n\u003ctd\u003eUp to 3 enclosures, 39 auxiliary circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Equivalent\u003c\/td\u003e\n\u003ctd\u003e523961\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIntelliCenter Load Center enclosure with 150 A built-in circuit breaker subpanel and five pre-installed high-voltage relays\u003c\/li\u003e\n\u003cli\u003ei8PS personality kit, shared pool and spa configuration\u003c\/li\u003e\n\u003cli\u003eIntelliCenter outdoor control panel with colour touchscreen\u003c\/li\u003e\n\u003cli\u003eControl system transformer\u003c\/li\u003e\n\u003cli\u003eSalt chlorine generator transformer\u003c\/li\u003e\n\u003cli\u003eIntelliChlor salt cell — see the note above regarding IC40 versus Plus40 in Pentair's documentation\u003c\/li\u003e\n\u003cli\u003eTwo IntelliValve valve actuators\u003c\/li\u003e\n\u003cli\u003eOutdoor wireless antenna\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot included:\u003c\/strong\u003e individual circuit breakers, indoor control panel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSpecify this part number when matching an existing installation already built around it, or where legacy stock is the practical option. For a new build, 523961 is the current equivalent and ships the newer IntelliChlor Plus40 cell.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLearn more at Pentair:\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/www.pentair.com\/en-us\/products\/residential\/pool-spa-equipment\/pool-automation\/intellicenter-control-system.html\"\u003ehttps:\/\/www.pentair.com\/en-us\/products\/residential\/pool-spa-equipment\/pool-automation\/intellicenter-control-system.html\u003c\/a\u003e\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48915894862073,"sku":"521903","price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/poolave.com\/es\/products\/pentair-intellicenter-521903-i8ps-pool-spa-automation-system-8-function-load-center-intellichlor-ic40-salt-cell-2-intellivalve-actuators-legacy-part-number","provider":"PoolAve ","version":"1.0","type":"link"}