{"product_id":"square-d-egb16025-25a-277v-1-pole-bolt-on-circuit-breaker","title":"Square D EGB16025 - 25 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered by Square D, the EGB16025 25A, 277V, 1-Pole Bolt-On Molded Case Circuit Breaker delivers dependable branch circuit overcurrent and short-circuit protection for panelboards and loadcenters. Its secure bolt-on mounting creates a rigid, vibration-resistant bus connection, reducing the risk of connection loosening in cabinets that experience movement or vibration. The thermal-magnetic trip unit provides stable, repeatable protection across a range of temperatures, instantly interrupting fault currents while accommodating normal load variations.\u003c\/p\u003e \u003cp\u003eDesigned for seamless compatibility with matching OEM load centers, this breaker ensures proper fit, coordination, and performance within your Square D system. With a 25-amp rating at 277 volts, it is purpose-built for 277V distribution networks found in commercial settings, powering lighting circuits, receptacle runs, and control devices where reliable protection is essential.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e — delivers a rigid, vibration-resistant bus connection that stays tight over time, supporting long-term reliability in busy panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e — combines accurate thermal overload protection with an instantaneous magnetic trip for short-circuit events, ensuring fast, predictable response when it matters most.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e277V, 1-pole operation\u003c\/strong\u003e — ideal for single-pole protection on 277V circuits common in commercial and light industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e — engineered to pair with Square D panelboards and loadcenters for coordinated performance and easy replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, field-ready design\u003c\/strong\u003e — 1-pole bolt-on configuration accommodates standard enclosures, simplifying installation and future upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e EGB16025\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 25 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 277 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\u003c\/strong\u003e 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection in panelboards and loadcenters\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical use cases and scenarios\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eProtect commercial 277V lighting circuits where consistent protection and uptime are critical.\u003c\/li\u003e \u003cli\u003eUpgrade or replace aging breakers in OEM panelboards that require a secure bolt-on device with reliable thermal-magnetic protection.\u003c\/li\u003e \u003cli\u003eAdd a dependable, OEM-compatible 25A protection point for small power or control circuits in light industrial installations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eInstallation tips\u003c\/strong\u003e — ensure the breaker matches the panelboard’s listing and that line\/load orientation is correct. Secure the bolt-on connection properly to maintain a solid bus contact and protection performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance notes\u003c\/strong\u003e — periodically inspect connections for signs of looseness or overheating; replace if you notice discoloration, warmth, or wear indicative of degraded performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBest-use practices\u003c\/strong\u003e — pair with compatible OEM load centers to preserve coordination and trip characteristics, and follow all applicable electrical codes during installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor reliable, code-compliant protection of 277V branch circuits in Square D installations, the EGB16025 stands out with its combination of secure mounting, precise thermal-magnetic protection, and OEM compatibility in a compact, easy-to-install package.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355197919394,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-egb16025-25-a-277-v-1-pole-bolt-on-circuit-breaker-435.webp?v=1788740612","url":"https:\/\/www.ampstate.com\/products\/square-d-egb16025-25a-277v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}