{"product_id":"square-d-hdl36125-125a-600v-3-pole-circuit-breaker","title":"Square D HDL36125 - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D HDL36125—a dependable, high-performance 125 A, 600 V, 3-pole molded case circuit breaker designed to protect your electrical system where it matters most. Built for reliable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters, this unit maximizes space without compromising protection.\u003c\/p\u003e \u003ch3\u003eKey advantages that matter in real-world installations\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e maximizes panel space, making it easier to fit large circuits in tight electrical enclosures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection—the thermal element responds to overloads with predictable trips, while the magnetic element rapidly interrupts high fault currents for fast isolation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e125 A, 600 V, 3-pole configuration\u003c\/strong\u003e is ideal for protecting 3-phase circuits common in commercial and light industrial settings, while also accommodating certain single-phase installations in mixed-use panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e ensures a seamless fit with matching Square D loadcenters and panelboards, simplifying replacement and maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile across applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial electrical distributions, making it a practical choice for diverse projects.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003eUse the HDL36125 to safeguard feeders and branch circuits that power lighting, outlets, HVAC components, motors, and equipment in panelboards and loadcenters. Its precise trip characteristics help minimize downtime by isolating only the affected circuit, while the rest of the system continues to operate normally.\u003c\/p\u003e \u003ch3\u003eHow it protects your system\u003c\/h3\u003e\n\u003cp\u003eThe thermal-magnetic mechanism provides a two-tier response: the thermal element handles gradual overloads for stable protection, and the magnetic element engages during high-current faults to quickly interrupt the circuit. This combination reduces wiring damage, protects connected devices, and enhances overall system reliability in both new installations and panelboard retrofit projects.\u003c\/p\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\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 HDL36125\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 3\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\u003eCompatibility and installation\u003c\/h3\u003e\n\u003cp\u003eThis unit is designed to be compatible with matching OEM Square D loadcenters and panelboards, ensuring a straightforward, reliable replacement or installation. For best results, pair the HDL36125 with a Square D panelboard configured to accept molded-case breakers, and follow standard electrical codes during wiring and commissioning.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355264143522,"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_edfb57a2-d500-44c9-8586-3639b414ce4a.png?v=1764690803","url":"https:\/\/www.ampstate.com\/products\/square-d-hdl36125-125a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}