{"product_id":"terasaki-at20-2000a-690vac-3-pole-air-circuit-breaker","title":"Terasaki AT20 2000A 690 VAC 3 Pole Air Circuit Breaker For Low Voltage Power Distribution","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Terasaki AT20 2000A 690 VAC 3 Pole Air Circuit Breaker — a rugged, high-capacity protection and switching solution built for reliable operation in modern low-voltage power distribution systems. Designed for industrial and commercial facilities, this 3-Pole air circuit breaker safeguards main feeders, switchboards, and critical distribution paths with precision and confidence.\u003c\/p\u003e \u003cp\u003eThe AT20 is engineered to handle demanding electrical environments. With a 2000 A current rating and a 690 VAC voltage rating, it provides robust protection for large-scale LV networks while maintaining smooth, predictable operation across phases. Its three-pole configuration ensures synchronized tripping across all phases, preserving balance and safeguarding connected equipment from asymmetric faults.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current capability:\u003c\/strong\u003e 2000 A continuous rating handles heavy feeder loads with reliability, reducing nuisance trips during surges.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection:\u003c\/strong\u003e Ensures simultaneous interruption of all three phases for balanced fault clearance and enhanced safety.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e690 VAC operation:\u003c\/strong\u003e Suitable for contemporary low-voltage distribution networks with room for future expansion.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAdjustable trip settings:\u003c\/strong\u003e Tailor protection curves to your load profile, motor starts, and short-circuit scenarios for optimal coordination.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh interruption capacity:\u003c\/strong\u003e Delivers fast, decisive fault clearance to protect downstream equipment and minimize downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-grade reliability:\u003c\/strong\u003e Designed specifically for heavy-duty LV distribution in industrial and commercial facilities, not intended for typical residential use.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this AT20 matters in real-world deployments\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eIdeal for new installations and upgrades where scalable, dependable protection is essential for main feeders and switchboards.\u003c\/li\u003e \u003cli\u003eUseful in data centers, manufacturing facilities, hospitals, and large commercial complexes where protecting critical power distribution reduces downtime and equipment damage.\u003c\/li\u003e \u003cli\u003eSupports protection scheme coordination by allowing adjustable trip settings that align with upstream and downstream devices.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical considerations and best-use tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eInstall as the main incoming feeder breaker or at primary switchboards to enable rapid fault isolation and safeguard downstream circuits.\u003c\/li\u003e \u003cli\u003eWork with a protection engineer to set trip thresholds that balance selective tripping with effective fault clearance.\u003c\/li\u003e \u003cli\u003eEnsure proper enclosure, mounting, and electrical clearances per applicable standards to maintain safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Terasaki AT20 2000A 690 VAC 3-Pole Air Circuit Breaker for a purpose-built solution that delivers dependable protection, precise control, and scalable capacity for demanding low-voltage power distribution environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Terasaki","offers":[{"title":"Default","offer_id":46390488563874,"sku":"AT20","price":15111.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_180132bf-093b-4a07-97f3-70c1b9a4a131.png?v=1765373758","url":"https:\/\/www.ampstate.com\/products\/terasaki-at20-2000a-690vac-3-pole-air-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}