{"product_id":"square-d-994370-circuit-breaker","title":"Square D | 994370 | Circuit Breaker | 70A | 3-Pole | 480V | Bolt-On","description":"\u003cdiv\u003eThe Square D 994370 circuit breaker is a purpose-built solution for industrial panels needing reliable three-phase protection. With a 70 A rating, three poles, and a 480 V operating specification, this bolt-on breaker is designed for maintenance, retrofit, and replacement projects where exact compatibility matters. Key specifications at a glance\n- Amperage: 70 A\n- Poles: 3-Pole\n- Voltage: 480 V\n- Mounting: Bolt-On\n- Reference number: 994370 (best compatibility reference) Why this bolt-on breaker stands out in demanding electrical environments\n- Secure, vibration-resistant mounting: The bolt-on design provides a robust attachment that stays aligned in equipment with continuous operation or heavy 3-phase loads, reducing the risk of loose connections over time.\n- Precise three-phase protection: The 3-pole configuration ensures synchronized interruption across all phases, safeguarding motors, drives, and other three-phase equipment from unequal loading and fault conditions.\n- Industrial-ready voltage rating: Built for 480 V systems, this breaker aligns with common commercial and manufacturing power distribution so you can upgrade or retrofit without over-specifying equipment.\n- Clear compatibility reference: The part number 994370 is the most reliable way to verify fit with your Square D\/Reliant panels and accessories. Always confirm the exact panel model and rating before ordering to ensure a smooth replacement. Ideal use cases\n- Panel retrofits: Upgrade aging protection in existing 480 V, three-phase distributions where a bolt-on breaker is required for secure mounting.\n- Maintenance replacements: Stock and swap in 70 A, 3-pole breakers to minimize downtime when a circuit trips or a part reaches end-of-life.\n- Equipment modernization: Bring older drive systems or line-start motors up to current protection standards with a compatible Square D bolt-on solution. How this protection device helps you manage risk and reliability\n- Predictable tripping behavior across three phases reduces the chance of unbalanced loads causing equipment damage.\n- Consistent performance in industrial environments where panel space is constrained and vibration is a factor, thanks to a rugged bolt-on mounting approach.\n- Streamlined ordering and maintenance planning: use the 994370 as the single reference point for compatibility checks, reducing guesswork during replacements. Practical tips for use and installation\n- Always verify fit and ratings before ordering by cross-referencing the panel model and the 994370 part number.\n- When replacing a breaker, ensure the replacement matches not only amperage and voltage but also the panel’s mounting footprint and frame type.\n- Schedule periodic inspections of bolt-on connections in high-vibration environments to maintain reliable electrical continuity. This 70 A, 3-pole, 480 V bolt-on circuit breaker from Square D is purpose-built for industrial distributors, manufacturing floors, and service teams needing a precise, durable replacement that aligns with existing 480 V three-phase systems.\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46427302527138,"sku":"994370","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\/square-d-994370-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}