{"product_id":"siemens-ef2b045-circuit-breaker","title":"Siemens | EF2B045 | Circuit Breaker | 2-Pole | Bolt-On","description":"\u003cdiv\u003eSiemens EF2B045: 2-Pole Bolt-On Circuit Breaker for Maintenance, Retrofit, and Replacement The Siemens EF2B045 is a dependable, two-pole bolt-on circuit breaker built to integrate seamlessly into compatible panels where exact specifications matter. Designed for maintenance, retrofit, and replacement projects, this part-number-specific breaker ensures you’re restoring the original performance and protection your electrical system requires. Why EF2B045 stands out\n- Precise fit with bolt-on mounting: The robust bolt-on design delivers a secure, vibration-resistant connection, helping to maintain reliable overcurrent protection in demanding environments.\n- Clear compatibility reference: The part number EF2B045 is your best reference for ensuring you’re selecting the correct breaker for your panel and existing electrical architecture.\n- Two-pole protection: Suitable for multi-wire branch circuits, enabling coordinated protection across two live conductors and helping maintain safe, code-compliant operation.\n- Siemens-certified reliability: As an authentic Siemens component, EF2B045 aligns with Siemens panels and configuration standards, reducing the guesswork in retrofit or replacement scenarios. Ideal use cases\n- Panel retrofit projects where updating aging protective devices is necessary to meet current safety standards.\n- Replacement in serviceable Siemens panels that require a matching two-pole bolt-on breaker.\n- Spare inventory for field technicians performing on-site maintenance, minimizing downtime with a ready-to-install part number reference. How to confirm fit before ordering\n- Verify the panel label or manufacturer documentation lists bolt-on breakers and references EF2B045 as the compatible part number.\n- Ensure the required electrical ratings (current and voltage) align with the original protective device specifications for the circuit you’re protecting.\n- Cross-reference the EF2B045 part number to confirm compatibility with your specific Siemens panel model and configuration.\n- If you’re unsure about fit, rely on the part-number-based compatibility approach—the EF2B045 reference is designed to minimize mis-matches in replacement scenarios. Installation and safety tips\n- Before installing, power down the equipment and follow all relevant safety procedures and local codes.\n- Use proper torque and mounting guidelines per the panel manufacturer and Siemens installation recommendations to ensure a secure, reliable connection.\n- After installation, verify continuity and test the circuit protection according to standard commissioning practices. Who benefits most\n- Electrical contractors, maintenance technicians, and facility managers seeking reliable, compatible Siemens protection devices.\n- Organizations maintaining or upgrading commercial or light-industrial electrical systems that require precise part-number compatibility for downtime-critical projects. In short, the Siemens EF2B045 offers dependable two-pole protection with a bolt-on mount designed for straightforward installation in compatible Siemens panels. Rely on the EF2B045 as your targeted, part-number-driven solution for maintenance, retrofit, and replacement needs, ensuring accurate fit and continued circuit protection.\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427523743906,"sku":"EF2B045","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/siemens-ef2b045-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}