{"product_id":"siemens-dt400nk-safety-switch-accessories","title":"Siemens - DT400NK Neutral Kit | 400A Non-Fusible Double Throw Safety Switch Solid Neutral Assembly","description":"\u003cp\u003e\u003cstrong\u003eSiemens DT400NK Neutral Kit\u003c\/strong\u003e — a field-installable solid neutral assembly for 400A non-fusible double-throw safety switches. The DT400NK adds a grounded neutral conductor termination point to compatible Siemens double-throw safety switches, enabling their use in 4-wire systems where a switched neutral is required.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose the Siemens DT400NK?\u003c\/h2\u003e\n\u003cp\u003eDouble-throw safety switches are used in applications where power must be transferred between two sources — utility power and a generator, for example. The DT400NK neutral kit is essential when the system uses a 4-wire (3-phase + neutral) configuration, as it provides a solid neutral bar to properly terminate and route the neutral conductor through the switch. Without a neutral kit, the neutral cannot be safely accommodated inside the enclosure.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e DT400NK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Type:\u003c\/strong\u003e Solid Neutral Assembly (Neutral Kit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmpere Rating:\u003c\/strong\u003e 400A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 240V \/ 480V \/ 600V AC; 25V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Type Compatibility:\u003c\/strong\u003e 400A Non-Fusible Double Throw (DT) Safety Switches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Range:\u003c\/strong\u003e 6 AWG – 250 KCMIL (Copper or Aluminum)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Lugs:\u003c\/strong\u003e 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 3.188\" × 3.434\" × 8.5\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Field installable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e UL Listed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat Is a Safety Switch Neutral Kit?\u003c\/h2\u003e\n\u003cp\u003eA neutral kit (also called a neutral assembly or neutral block) is an accessory that adds a grounded, isolated neutral bus bar inside a safety switch enclosure. It terminates the neutral conductor without switching it — keeping the neutral solidly connected while the phase conductors are opened or transferred by the switch. This is a code requirement in most 4-wire system applications under NEC Article 230 and 700.\u003c\/p\u003e\n\u003ch2\u003eCommon Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenerator transfer systems (utility-to-generator switching)\u003c\/li\u003e\n\u003cli\u003e4-wire, 3-phase + neutral double-throw switch installations\u003c\/li\u003e\n\u003cli\u003eService entrance applications requiring a solid neutral\u003c\/li\u003e\n\u003cli\u003eEmergency\/standby power systems per NEC Article 700\u003c\/li\u003e\n\u003cli\u003eField upgrade of existing 400A non-fusible DT safety switches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Note\u003c\/h2\u003e\n\u003cp\u003eThe DT400NK is designed for field installation into compatible 400A non-fusible double-throw safety switches. Always verify your switch's series and catalog number compatibility before purchasing. De-energize the switch completely before installation. Consult the NEC and local electrical codes for neutral handling requirements in transfer switch applications.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"New","offer_id":48396138905848,"sku":"DT400NK-N","price":424.5,"currency_code":"USD","in_stock":true},{"title":"Used","offer_id":48396138938616,"sku":"DT400NK-U","price":424.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1209\/3176\/files\/DT400NK_3.png?v=1779896066","url":"https:\/\/alphabreakersandcontrols.com\/products\/siemens-dt400nk-safety-switch-accessories","provider":"Alpha Breakers \u0026 Controls","version":"1.0","type":"link"}