{"product_id":"siemens-qj23b070ha02-circuit-breaker","title":"Siemens | QJ23B070HA02 | Circuit Breaker | 70A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens QJ23B070HA02\u003c\/strong\u003e is a 70A, 3-pole, 240V bolt-on circuit breaker designed for dependable protection in demanding electrical panels. Built for maintenance, retrofit, and replacement scenarios where exact specifications matter, this unit delivers precise, reliable performance within compatible Siemens systems.\u003c\/p\u003e \u003ch2\u003eKey features that matter in real-world use\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 70A — protects circuits with substantial load demands without unnecessary nuisance tripping.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 3-Pole — ideal for three-phase distribution, ensuring coordinated protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating\u003c\/strong\u003e: 240V — suitable for standard industrial and commercial distribution arrangements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting\u003c\/strong\u003e: Bolt-On — secure, durable installation that stays firmly seated in compatible panels during operation and maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference\u003c\/strong\u003e: QJ23B070HA02 — using the exact part number is the best way to confirm compatibility with your panel and trip characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy this Siemens circuit breaker stands out\u003c\/h2\u003e\n\u003cp\u003eRather than a generic replacement, this unit is purpose-built to slot into Siemens environments where precise fit and ratings are non-negotiable. The bolt-on design simplifies field service and retrofit projects, reducing downtime while maintaining the panel’s protection profile. Its 3-pole configuration ensures synchronized interruption across all phases, which is essential for balanced loads and safer shutdowns in multi-phase systems.\u003c\/p\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and service upgrades for existing Siemens panels that require a 70A, 3-pole, 240V bolt-on breaker.\u003c\/li\u003e \u003cli\u003eRetrofit projects where modern protection must align with legacy panel architectures that rely on the QJ-series form factor.\u003c\/li\u003e \u003cli\u003eReplacement of failed or worn breakers within compatible distribution panels, minimizing compatibility questions and installation guesswork.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eCompatibility and installation tips\u003c\/h2\u003e\n\u003cp\u003eBefore ordering, verify fit and ratings—the line notes that the \u003cstrong\u003eQJ23B070HA02\u003c\/strong\u003e part number is the most reliable reference for compatibility. Ensure your panel supports bolt-on mounting and that a 70A, 240V three-phase configuration is appropriate for the circuit being protected. For best results, match the breaker to the panel model and verify the panel’s catalog data to align with Siemens’ QJ-series specifications.\u003c\/p\u003e \u003ch2\u003ePractical outcomes\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eReliable overcurrent protection across all three phases, helping prevent damage to motors, drives, and feeders.\u003c\/li\u003e \u003cli\u003eFaster field replacement with a secure bolt-on installation that minimizes service disruption.\u003c\/li\u003e \u003cli\u003eClear path for maintenance, retrofit, or replacement projects thanks to precise part-number compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427423637666,"sku":"QJ23B070HA02","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qj23b070ha02-circuit-breaker-70a-3-pole-240v-bolt-344.webp?v=1789721573","url":"https:\/\/www.ampstate.com\/products\/siemens-qj23b070ha02-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}