{"product_id":"ed43b045-siemens-45a-3-pole-480v-bolt-on-mccb","title":"Siemens ED43B045 45A 3-Pole 480V Bolt-On Molded Case Circuit Breaker","description":"\u003cp\u003eThe \u003cstrong\u003eSiemens ED43B045\u003c\/strong\u003e is a 3-pole, 45-amp thermal magnetic molded case circuit breaker (MCCB) rated for 480VAC systems. Designed for bolt-on panelboard installation, it provides reliable overcurrent and short-circuit protection for commercial and industrial three-phase electrical distribution systems. The ED4 series is trusted by electricians and facilities engineers for its compact footprint, consistent trip performance, and UL 489 listing.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eED43B045\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmperage Rating\u003c\/td\u003e\n\u003ctd\u003e45A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e480VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Poles\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrip Type\u003c\/td\u003e\n\u003ctd\u003eThermal Magnetic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Type\u003c\/td\u003e\n\u003ctd\u003eBolt-On\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterrupting Rating\u003c\/td\u003e\n\u003ctd\u003e65kA @ 240V \/ 25kA @ 480V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eUL 489 Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Series\u003c\/td\u003e\n\u003ctd\u003eED4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThermal magnetic trip mechanism provides accurate overload and short-circuit protection\u003c\/li\u003e\n\u003cli\u003eBolt-on design for secure, vibration-resistant mounting in panelboards\u003c\/li\u003e\n\u003cli\u003e3-pole configuration for three-phase 480V power distribution\u003c\/li\u003e\n\u003cli\u003eCompact ED4 frame fits standard Siemens and compatible load centers\u003c\/li\u003e\n\u003cli\u003eUL 489 Listed — meets National Electrical Code (NEC) requirements\u003c\/li\u003e\n\u003cli\u003eField-installable accessories including shunt trip, aux contacts, and locking devices\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCommercial and industrial 480V panelboards and load centers\u003c\/li\u003e\n\u003cli\u003eMotor branch circuit protection up to 45A\u003c\/li\u003e\n\u003cli\u003eHVAC equipment feeders and branch circuits\u003c\/li\u003e\n\u003cli\u003eManufacturing facility power distribution panels\u003c\/li\u003e\n\u003cli\u003eMain or branch breaker in 480V three-phase systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat is the Siemens ED43B045 circuit breaker used for?\u003c\/h3\u003e\u003cp\u003eThe Siemens ED43B045 is a 45-amp, 3-pole, 480V bolt-on molded case circuit breaker used to protect three-phase branch circuits and feeder circuits in commercial and industrial panelboards. It safeguards wiring and equipment against overloads and short circuits.\u003c\/p\u003e\u003ch3\u003eWhat is the interrupting rating of the ED43B045?\u003c\/h3\u003e\u003cp\u003eThe Siemens ED43B045 has an interrupting rating of 65kA at 240V and 25kA at 480V, making it suitable for most commercial and light industrial 480V distribution applications.\u003c\/p\u003e\u003ch3\u003eIs the ED43B045 compatible with Siemens panelboards?\u003c\/h3\u003e\u003cp\u003eYes. The ED43B045 uses a bolt-on mounting style compatible with Siemens S-series and P-series panelboards. Always verify compatibility with your specific panel model before installation.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"New","offer_id":48395743297784,"sku":"ED43B045-N","price":197.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1209\/3176\/files\/ED43B045L_Illustration_Front_Original.jpg?v=1778787594","url":"https:\/\/alphabreakersandcontrols.com\/products\/ed43b045-siemens-45a-3-pole-480v-bolt-on-mccb","provider":"Alpha Breakers \u0026 Controls","version":"1.0","type":"link"}