{"product_id":"siemens-p1-250a-208y-120-nema1-main-breaker-panelboard","title":"Siemens P1-250A-208Y-120-NEMA1 Main Breaker Panelboard","description":"\u003cdiv\u003e\u003cp\u003eSiemens P1-250A-208Y-120-NEMA1 Main Breaker Panelboard is a P1 panel interior rated for 250 A with a 208Y\/120 V, 3-phase, 4-wire supply housed in a NEMA 1 enclosure for indoor service distribution. The panel's bus is copper or tin-plated aluminum and is specified for 250 A maximum, supporting a broad range of branch-circuit configurations from 18 up to 66 single-pole circuits, depending on the interior model. For example, the 30-space variant P1C30MC250AT is rated for 208Y\/120 V and comes with a main breaker configuration and a 100 kA SCCR (as documented for that interior), while larger interiors such as the 54-space P1X54MC250AT are also offered to accommodate more circuits in the same 208Y\/120 V, 3-phase system. Siemens notes NEC 2020 adoption (where accepted) and compliance with NEMA PB 1 standards for P1 panelboards, reinforcing their suitability for commercial\/industrial indoor power distribution. The P1 family covers a range of interior counts and configurations, all designed to deliver reliable main-breaker protection in a compact footprint, with the 208Y\/120 V 3Ø4W arrangement being the common configuration for these panelboards. \u003c\/p\u003e\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"New","offer_id":46269126836458,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-019.png?v=1788727428","url":"https:\/\/gtghardware.com\/products\/siemens-p1-250a-208y-120-nema1-main-breaker-panelboard","provider":"GTG Hardware","version":"1.0","type":"link"}