{"product_id":"square-d-hda261251-125a-600v-2-pole-plug-in-circuit-breaker","title":"Square D HDA261251 - 125 A, 600 V, 2-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D HDA261251 is a 125 A, 600 V, 2-pole plug-in molded case circuit breaker designed to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. With a fast plug-in connection, it streamlines installation and replacement, helping you minimize downtime during panel upgrades or service calls.\u003c\/p\u003e \u003cp\u003eKey advantages that matter in real-world installations\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection:\u003c\/strong\u003e Precisely aligns with compatible OEM panelboards and load centers, reducing install time and tightening the path to code-compliant protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e Combines thermal overload protection with instantaneous magnetic trip for short circuits, delivering stable, repeatable performance across varying loads and temperatures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e2-pole design for 120\/240V applications:\u003c\/strong\u003e Suitable for common branch circuits and multi-wire branch circuits, providing coordinated protection for both hot legs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBroad compatibility:\u003c\/strong\u003e Engineered to fit and function with matching Square D OEM panelboards and load centers, preserving system integrity and electrical listings.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWho this is for and practical use cases\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eResidential electricians upgrading service panels or adding subpanels to support renovations or additions.\u003c\/li\u003e \u003cli\u003eCommercial electricians provisioning small to mid-size distribution panels, machine feeds, or lighting and receptacle circuits in offices or retail spaces.\u003c\/li\u003e \u003cli\u003eLight industrial setups needing reliable protection for feeders and control circuits in compact panel configurations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhat problems it solves\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePrevents damage from overcurrent conditions by interrupting fault currents quickly and reliably.\u003c\/li\u003e \u003cli\u003eLimits heat-related wear on conductors with precise thermal-magnetic protection, improving long-term panel performance.\u003c\/li\u003e \u003cli\u003eReduces maintenance time with a plug-in design that simplifies replacement and reduces field wiring complexity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eTechnical snapshot and installation notes\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e HDA261251\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 125 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 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 Plug-in\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 \u003cp\u003ePractical tips for best results\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify that your panelboard or load center is a compatible Square D OEM model to ensure proper fit, electrical clearance, and listing compliance.\u003c\/li\u003e \u003cli\u003eWhen replacing an existing breaker, match the current rating (125 A) and the two-pole configuration to preserve protective coordination and panel specifications.\u003c\/li\u003e \u003cli\u003eFollow standard safety practices: de-energize the panel, discharge stored energy, and use appropriate PPE during installation.\u003c\/li\u003e \u003cli\u003eEnsure tight, manufacturer-specified torque on bus connections to maintain reliable contact and consistent trip performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355249332386,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_3445d26d-dbcf-4212-8542-6ef0fd61a59b.png?v=1764690732","url":"https:\/\/www.ampstate.com\/products\/square-d-hda261251-125a-600v-2-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}