{"product_id":"hn3b400","title":"HN3B400 - 400Amp Circuit Breaker","description":"\u003cp\u003e\u003cstrong\u003eHN3B400 - 400Amp Circuit Breaker\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Siemens HN3B400 is a 400-amp, three-pole molded-case circuit breaker designed for electrical distribution systems that require an HN3 frame configuration. This breaker is rated for use in 40°C environments and offers interrupt ratings of 42 kA at 600 VAC, 65 kA at 480 VAC, and 65 kA at 240 VAC.\u003c\/p\u003e\n\u003cp\u003eWhen you're replacing a circuit breaker in existing equipment, the small details make a big difference. The amperage rating is only one part of the match—the frame type, number of poles, voltage rating, and interrupt capacity all need to line up with the system requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e400A rating: Designed for applications requiring a 400-amp molded case circuit breaker.\u003c\/li\u003e\n\u003cli\u003eThree-pole design: Fits systems that require three-pole circuit protection.\u003c\/li\u003e\n\u003cli\u003eHN3 frame configuration: Provides the frame style required for compatible equipment.\u003c\/li\u003e\n\u003cli\u003e40°C rating: Suitable for applications operating within the specified temperature range.\u003c\/li\u003e\n\u003cli\u003eMolded case construction: Common breaker format used in many electrical distribution systems.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HN3B400\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Molded case circuit breaker\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Type:\u003c\/strong\u003e HN3\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 400 A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e Three-pole\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA.I.C. Rating:\u003c\/strong\u003e42 kA at 600 VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e65 kA at 480 VAC\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e65 kA at 240 VAC\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 40°C\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Molded case circuit breaker\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate Ship Weight:\u003c\/strong\u003e 42.00 lbs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 9.00\"W x 15.50\"L x 4.00\"D\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 15.5 in.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 9.0 in.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 4.0 in.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Compliance and Certifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe available product information identifies the Siemens HN3B400 as a molded-case circuit breaker, but it does not list any additional material compliance details or certifications.\u003c\/p\u003e\n\u003cp\u003eFor projects with specific regulatory, environmental, or material requirements, those requirements should be confirmed separately before installation.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Siemens HN3B400 is best suited for electrical distribution equipment that calls for a 400A, three-pole breaker with an HN3 frame configuration. It is especially useful in maintenance and replacement situations where matching the existing breaker specifications is the priority.\u003c\/p\u003e\n\u003cp\u003eBefore selecting a replacement, check the complete electrical requirements—not just the amp rating. Verify the frame type, pole count, voltage rating, and interrupting capacity to ensure the breaker matches the equipment it will be installed in.\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\n\u003cdiv\u003e\n\u003cblockquote\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eUse of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer.\u003cstrong\u003e CIRCUIT BREAKER SUPERSTORE®\u003c\/strong\u003e is an independent reseller and is \u003cstrong\u003enot \u003c\/strong\u003ean authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do \u003cstrong\u003enot\u003c\/strong\u003e apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eSiemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are \u003cstrong\u003eNOT \u003c\/strong\u003esupplied by Siemens AG or its affiliates.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"I-T-E","offers":[{"title":"New In Box","offer_id":49503937462571,"sku":"HN3B400","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":49503937495339,"sku":"HN3B400 [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/hn3b400","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}