{"product_id":"westinghouse-rlm3300l-circuit-breaker","title":"Westinghouse | RLM3300L | Circuit Breaker | 300A | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Westinghouse RLM3300L circuit breaker — a purpose-built solution for dependable overcurrent protection in demanding electrical systems. With a 300A rating and 600V maximum, this unit is designed for maintenance, retrofit, and replacement projects where exact specifications matter and downtime is costly.\u003c\/p\u003e \u003ch3\u003eCore specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 300A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference reference:\u003c\/strong\u003e Part number RLM3300L is the best compatibility reference\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat sets the RLM3300L apart\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrongexact-match reference:\u003e The RLM3300L part number is your most reliable indicator for fit, ratings, and compatibility in compatible Westinghouse panels and installations.\u003c\/strongexact-match\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for service continuity:\u003c\/strong\u003e Ideal for maintenance cycles, retrofit projects, and replacement scenarios where preserving electrical protection integrity matters.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeamless integration:\u003c\/strong\u003e Built to align with existing protection schemes in systems that require a 300A, 600V capability, helping you preserve upstream protection coordination.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho should consider this breaker\u003c\/h3\u003e\n\u003cp\u003eThis unit is particularly well-suited for facilities and contractors performing scheduled maintenance, panel retrofits, or component replacements where you need a precise 300A, 600V specification. If your operation relies on Westinghouse-compatible protection devices and you’re matching a known part number, the RLM3300L is the best reference to confirm compatibility.\u003c\/p\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRoutine maintenance in commercial or industrial panels where a 300A protection level is required.\u003c\/li\u003e \u003cli\u003eRetrofit work to update an aging electrical system without changing the overall protection strategy.\u003c\/li\u003e \u003cli\u003eReplacement scenarios that demand an exact amperage and voltage rating to minimize compatibility surprises.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow to verify fit and order with confidence\u003c\/h3\u003e\n\u003cp\u003eBefore purchasing, confirm that the RLM3300L aligns with your panel’s current rating and configuration. The part number serves as the most reliable compatibility reference, helping you avoid mismatches that could affect performance or safety. If in doubt, consult your panel documentation or a licensed electrician to cross-check the fit against your equipment lineage.\u003c\/p\u003e \u003ch3\u003eTips for safe, effective use\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePower down equipment and follow all lockout\/tagout procedures before replacement or maintenance.\u003c\/li\u003e \u003cli\u003eHandle with care to avoid damage to terminals and mounting surfaces.\u003c\/li\u003e \u003cli\u003eStore spare breakers in a clean, dry environment to preserve performance.\u003c\/li\u003e \u003cli\u003eDocument the replacement with the part number (RLM3300L) for future maintenance cycles and audits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing the Westinghouse RLM3300L circuit breaker means prioritizing precise compatibility, dependable protection, and a straightforward path to maintaining safe, uninterrupted electrical service in systems designed for 300A at up to 600V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46427400306850,"sku":"RLM3300L","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\/westinghouse-rlm3300l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}