{"product_id":"siemens-he43b020-circuit-breaker","title":"Siemens | HE43B020 | Circuit Breaker | 20A | 3-Pole | 480V | 25kA | Bolt-On","description":"\u003cdiv\u003eSiemens HE43B020 Circuit Breaker—a precise, bolt-on solution for 20A, 3-Pole protection in 480V industrial networks. Built for maintenance, retrofit, and replacement, this breaker delivers dependable overcurrent protection in demanding environments, helping you keep critical equipment running with minimal downtime. \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 20 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 480 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInterrupting Capacity:\u003c\/strong\u003e 25 kA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HE43B020\u003c\/li\u003e\n\u003c\/ul\u003e Why choose the Siemens HE43B020 for your facility:\n- Precise compatibility: This part is explicitly identified by the HE43B020 number, making cross-reference and panel matching straightforward for Siemens-equipped systems. For the best fit, rely on the part number as the compatibility reference.\n- Quick, field-ready installation: Bolt-on mounting is designed for fast field swaps, reducing panel downtime during retrofits or replacements without sacrificing secure, dependable fastening.\n- Robust protection for 480V systems: With a 25 kA interrupting capacity, this breaker is suited for high fault-current environments typical of industrial motor feeders, control circuits, and distribution panels.\n- Streamlined maintenance and upgrades: Ideal for retrofit projects where you’re updating legacy gear or replacing aging protection devices, helping you standardize protection across your 480V infrastructure. This breaker is ideal for:\n- Plant engineers and maintenance teams performing panel retrofits or replacements in 480V networks\n- OEMs integrating Siemens protection into new equipment housings\n- Facilities upgrading motor control centers that require consistent, reliable 3-pole protection Use cases and scenarios:\n- Replacing a legacy 3-pole breaker in a Siemens panel with a bolt-on HE43B020 to restore original protection levels.\n- Retrofitting an older motor feeder circuit to accommodate higher fault-current conditions while maintaining a 20A protection rating.\n- Stocking a spare HE43B020 for critical 480V line feeds in manufacturing or process facilities to minimize downtime. Important note:\n- Confirm fit and ratings before ordering. The part number HE43B020 is the most reliable reference for compatibility with your Siemens equipment. Installation and safety tips:\n- Always power down and lockout\/tagout the system before replacement.\n- Verify conductor sizing and panel rating align with 480V, 20A, and 25kA specs.\n- Ensure secure bolt-on seating and proper enclosure clearance to maintain panel integrity and protection performance. With Siemens HE43B020, you’re choosing a purpose-built, bolt-on circuit breaker that pairs precise electrical protection with efficient installation, tailored for high-demand 480V environments.\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46424834375842,"sku":"HE43B020","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-he43b020-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}