{"product_id":"siemens-ed43b040-40a-480v-3-pole-bolt-on-circuit-breaker","title":"Siemens ED43B040 - 40 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens ED43B040 — a purpose-built 40A, 480V, 3-pole bolt-on molded case circuit breaker engineered to protect your panelboards and load centers with precision. When reliability and robust performance matter, this unit delivers dependable overcurrent and short-circuit protection for residential, commercial, and light industrial applications.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eSecure bolt-on mounting for a dependable bus connection\u003c\/strong\u003e\u003cbr\u003e\nThe bolt-on design provides a rigid, vibration-resistant connection to the bus, helping prevent loose-terminals and reducing nuisance trips in demanding electrical environments.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eThermal-magnetic trip unit for stable protection\u003c\/strong\u003e\u003cbr\u003e\nA thermal-magnetic trip mechanism delivers consistent, repeatable protection across a range of loads and fault conditions, quickly clearing faults while minimizing unnecessary interruptions.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e\u003cbr\u003e\nDesigned to pair with matching Siemens OEM load centers and panelboards, ensuring a smooth fit, straightforward installation, and reliable long-term performance as part of a coordinated system.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eVersatility for a variety of settings\u003c\/strong\u003e\u003cbr\u003e\nWith a 40A rating and 3-pole configuration for 480V systems, this breaker is well-suited for branch circuit protection in commercial spaces, light industrial environments, and residential installations that leverage three-phase power infrastructure.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhat problems it solves\u003c\/strong\u003e\u003cbr\u003e\n- Prevents damage to wiring, devices, and equipment by interrupting overcurrent conditions before insulation or components are compromised\u003cbr\u003e\n- Reduces downtime by delivering fast, predictable fault clearance in panelboards and load centers\u003cbr\u003e\n- Supports safe, compliant electrical distribution in multi-phase systems common in offices, retail, and light manufacturing\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: ED43B040\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 40A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 480V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal for professionals and DIY installers alike\u003c\/strong\u003e\u003cbr\u003e\nWhether you’re upgrading a panelboard, refurbishing a commercial electrical room, or outfitting a new light industrial installation, the Siemens ED43B040 provides a dependable, plug-compatible solution that aligns with existing Siemens systems and ensures consistent performance across your distribution network.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349789757602,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_0aa6590c-4530-4488-a09d-2e53a01e4c9c.png?v=1764156823","url":"https:\/\/www.ampstate.com\/products\/siemens-ed43b040-40a-480v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}