{"product_id":"siemens-hed42b100-100a-480v-2-pole-bolt-on-circuit-breaker","title":"Siemens HED42B100 - 100 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens HED42B100, a precision-built 2-pole, 100A molded case circuit breaker designed to deliver reliable overcurrent and short-circuit protection for panelboards and loadcenters. With secure bolt-on mounting, it forms a rigid, vibration-resistant connection at the bus, helping maintain steady protection even in environments with movement or vibration.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e: Ensures a rigid bus connection and minimizes movement in vibration-prone environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: Delivers stable, repeatable protection for overloads and short circuits, reducing nuisance trips.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e: Designed to fit matching Siemens OEM loadcenters and panelboards for a seamless installation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile across sectors\u003c\/strong\u003e: Suitable for residential, commercial, and light industrial applications where dependable branch-circuit protection is critical.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer\u003c\/strong\u003e: Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number\u003c\/strong\u003e: HED42B100\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Thermal-magnetic molded case circuit breaker (MCCB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating\u003c\/strong\u003e: 100 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating\u003c\/strong\u003e: 480 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles\u003c\/strong\u003e: 2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style\u003c\/strong\u003e: Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e \u003cp\u003eIn residential or commercial panelboards and loadcenters requiring a robust 480V, 2-pole solution, the HED42B100 serves as the frontline defense against wiring faults. It shines in electrical subsystems, equipment enclosures, and service panels that demand reliable, long-term performance in environments with vibration or mechanical movement.\u003c\/p\u003e \u003ch3\u003eHow it compares to alternatives\u003c\/h3\u003e \u003cp\u003eThis bolt-on MCCB delivers a more rigid connection than lighter-duty or plug-in options, reducing bus-bar movement and potential contact issues over time. The thermal-magnetic trip unit paired with a 100 A rating at 480 V provides strong protection for higher-load circuits in commercial or light industrial settings, ensuring predictable behavior during faults and surges.\u003c\/p\u003e \u003ch3\u003ePractical tips for installation and use\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eVerify your panelboard’s compatibility with a 2-pole, 480 V, 100 A bolt-on breaker labeled HED42B100 before replacing or upgrading.\u003c\/li\u003e \u003cli\u003eUse the thermal-magnetic trip curve to anticipate protection during typical load surges and short circuits, minimizing nuisance trips.\u003c\/li\u003e \u003cli\u003eFor cohesive protection, pair with other Siemens HED-series devices that share the same mounting style and trip characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecs at a glance\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003ePoles: 2\u003c\/li\u003e \u003cli\u003eAmperage: 100 A\u003c\/li\u003e \u003cli\u003eVoltage: 480 V\u003c\/li\u003e \u003cli\u003eMounting: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit protection (overcurrent and short-circuit)\u003c\/li\u003e \u003cli\u003eCompatibility: Siemens OEM loadcenters and panelboards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349801062562,"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_6fb52986-c8e0-4156-bcce-936fb73caf33.png?v=1764157194","url":"https:\/\/www.ampstate.com\/products\/siemens-hed42b100-100a-480v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}