{"product_id":"pentairmastertemppoolheater120240vplugkit420010105spen420010105s","title":"Pentair MasterTemp Pool Heater 120\/240V Plug Kit | 42001-0105S","description":"\u003cdiv\u003e\n  \u003ch2\u003ePentair Voltage Selector Plug Kit (120V\/240V) for MasterTemp® \u0026amp; Max-E-Therm® Heaters | 42001-0105S\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Pentair \u003cstrong\u003e42001-0105S\u003c\/strong\u003e is an OEM \u003cstrong\u003evoltage selector plug kit\u003c\/strong\u003e used on the electrical system of\n    Pentair \u003cstrong\u003eMasterTemp\u003c\/strong\u003e and Sta-Rite \u003cstrong\u003eMax-E-Therm\u003c\/strong\u003e pool\/spa heaters. This plug set is used to configure the\n    heater for the correct incoming line voltage (\u003cstrong\u003e120V or 240V\u003c\/strong\u003e) so the transformer and control system receive the\n    proper power input.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSelects 120V or 240V operation:\u003c\/strong\u003e configures the heater for the supply voltage specified by the installation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOEM Pentair\/Sta-Rite kit:\u003c\/strong\u003e correct plug style and fit for compatible heater control\/transformer wiring layouts.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRestores correct power configuration:\u003c\/strong\u003e helpful when a plug is missing, damaged, overheated, or incorrectly set.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSupports reliable control power:\u003c\/strong\u003e incorrect voltage selection can lead to control issues or component damage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUsed on:\u003c\/strong\u003e Pentair \u003cstrong\u003eMasterTemp\u003c\/strong\u003e heater electrical systems (model\/revision dependent)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUsed on:\u003c\/strong\u003e Pentair \u003cstrong\u003eMasterTemp 125\u003c\/strong\u003e heater electrical systems (where specified)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUsed on:\u003c\/strong\u003e Sta-Rite \u003cstrong\u003eMax-E-Therm\u003c\/strong\u003e heater electrical systems (model\/revision dependent)\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    \u003cem\u003eTip:\u003c\/em\u003e Always match the part number and wiring diagram for your specific heater model and revision before ordering.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCommon Symptoms of a Bad or Incorrect Voltage Selector Plug\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater control panel\/display will not power on (after confirming breaker, wiring, and transformer condition)\u003c\/li\u003e\n    \u003cli\u003eIntermittent resets or erratic control behavior\u003c\/li\u003e\n    \u003cli\u003eEvidence of heat damage, melting, discoloration, or loose\/poor contact at the plug connection\u003c\/li\u003e\n    \u003cli\u003eHeater was recently rewired for a different voltage and now will not operate correctly\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Pentair\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 42001-0105S\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Voltage selector plug kit\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVoltage Options:\u003c\/strong\u003e 120V \/ 240V (heater configured)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e MasterTemp \/ Max-E-Therm heater electrical system\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 kit\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power at the breaker\u003c\/strong\u003e before opening the heater or servicing electrical components.\u003c\/li\u003e\n    \u003cli\u003eConfirm the supply voltage (120V vs 240V) and follow the heater wiring diagram exactly when installing the selector plug.\u003c\/li\u003e\n    \u003cli\u003eEnsure all connections are fully seated and secure; loose electrical connections can overheat and fail.\u003c\/li\u003e\n    \u003cli\u003eIf you’re unsure about wiring, have a qualified technician perform the installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=42001-0105S\"\u003eSearch Aqua Pool Supply for 42001-0105S\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=42001-0107S\"\u003eDual Voltage Transformer Kit (42001-0107S)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=MasterTemp%20electrical%20parts\"\u003eMasterTemp electrical parts\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=Max-E-Therm%20electrical%20parts\"\u003eMax-E-Therm electrical parts\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=MasterTemp%20125%20parts\"\u003eMasterTemp 125 replacement parts\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/pages\/search-results-page?q=heater%20transformer\"\u003ePool heater transformers\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the heater cabinet properly closed and sealed to reduce moisture intrusion that can corrode electrical connections.\u003c\/li\u003e\n    \u003cli\u003eInspect wiring and plug connections seasonally for looseness, corrosion, or heat discoloration.\u003c\/li\u003e\n    \u003cli\u003eIf you experience repeated electrical failures, verify correct supply voltage, grounding\/bonding, and look for water intrusion or rodent damage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52589951222076,"sku":"420010105S","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/pentair-mastertemp-pool-heater-120240v-plug-kit-42001-0105s-heater-parts-9235749.jpg?v=1771561345","url":"https:\/\/aquapoolsupply.com\/products\/pentairmastertemppoolheater120240vplugkit420010105spen420010105s","provider":"Aqua Pool Supply","version":"1.0","type":"link"}