{"product_id":"siemens-b140hh-40a-120v-1-pole-bolt-on-circuit-breaker","title":"Siemens B140HH - 40 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens B140HH: a 40A, 120V, 1-pole bolt-on molded case circuit breaker designed to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for durability and consistent performance, it’s a smart upgrade for both new installations and panel maintenance projects.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy it stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection that stays solid through temperature changes and daily equipment cycling.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection across varying loads and environmental conditions, reducing nuisance trips and keeping circuits safe.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e ensures seamless fit with matching Siemens panelboards and other OEM load centers, simplifying installation and maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple settings\u003c\/strong\u003e suited for residential, commercial, and light industrial applications where dependable protection matters most.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical highlights\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: B140HH\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 40 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 120 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 1\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 \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003eUpgrade an aging panel or retrofit a new circuit with confidence. The B140HH excels in spaces where a single-pole, 40A protection device is needed for branch circuits, such as lighting, outlets, or dedicated load circuits in residential units, small commercial spaces, and light industrial setups. Its bolt-on construction makes for a solid, field-ready connection that holds up under vibration and routine service.\u003c\/p\u003e \u003ch3\u003eInstallation and care tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify compatibility with your panelboard or load center before installation. \u003c\/li\u003e \u003cli\u003eEnsure proper alignment with the bus assembly and secure mounting to maintain electrical integrity.\u003c\/li\u003e \u003cli\u003eFollow OEM torque specifications and installation instructions to avoid damaging the breaker or panel.\u003c\/li\u003e \u003cli\u003ePeriodically inspect for signs of overheating or wear in the vicinity of the breaker and surrounding wiring.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eChoosing Siemens B140HH over alternatives\u003c\/h3\u003e\n\u003cp\u003eWhile many breakers provide basic overcurrent protection, the B140HH combines a robust bolt-on mounting approach with a precise thermal-magnetic trip mechanism, delivering dependable protection with fewer false trips. Its OEM compatibility means fewer compatibility concerns during panel upgrades, helping you avoid mismatches and rework.\u003c\/p\u003e \u003cp\u003eWhether you’re replacing a failed unit, expanding a panel, or standardizing protection across multiple circuits, the Siemens B140HH 40A 120V 1-pole bolt-on breaker is engineered to deliver predictable performance when it matters most—protecting people, wiring, and devices in your electrical system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349746471074,"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_1b16f65a-7c56-43c4-9977-71deaf8c0a5d.png?v=1764155772","url":"https:\/\/www.ampstate.com\/products\/siemens-b140hh-40a-120v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}