{"product_id":"abb-s201up-k4","title":"ABB S201UP-K4 4A 1-Pole 277 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cstrong\u003eABB S201UP-K4 4A 1-Pole 277 V Circuit Breaker\u003c\/strong\u003e is a purpose-built overcurrent protection device designed for single‑phase 277 V electrical systems. With a precise 4 A current rating and a single pole, this breaker targets small-draw circuits while safeguarding against overloads and short circuits. Part number S201UP-K4 identifies the exact ABB family member, ensuring compatibility with compatible panels and replacement parts. \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 4 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 277 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e S201UP-K4\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this matters for your electrical setup\u003c\/h3\u003e\n- Designed for 277 V single‑phase distribution, a common setup in commercial lighting, office buildings, and certain industrial environments. The 4 A rating is ideal for protecting small branch circuits or dedicated loads where a higher amp breaker would be excessive. - A single‑pole configuration simplifies installation on simple, uncomplicated circuits, helping to minimize panel space while delivering reliable protection. - Using a purpose-built ABB device helps maintain system coordination and labeling consistency across your electrical distribution. \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProtecting small lighting runs or dedicated control circuits operating at 277 V\u003c\/li\u003e\n\u003cli\u003eBranch circuits in commercial spaces where a lighter current protection is required\u003c\/li\u003e\n\u003cli\u003eReplacement in ABB panels or systems designed to accept the S201UP-K4 family breakers\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow this compares to other options\u003c\/h3\u003e\n- If your application requires single‑pole protection specifically for 277 V lines, the S201UP-K4 offers a precise 4 A rating that matches lightweight, low-load circuits without over-tripping broader, higher-capacity breakers. - For larger loads or multi‑phase distribution, a higher‑amp or multi‑pole solution would be more appropriate; this ABB device excels in targeted, low‑current protection scenarios where space and compatibility matter. \u003ch3\u003ePractical installation and handling tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure the circuit is de‑energized before replacement or installation.\u003c\/li\u003e\n\u003cli\u003eVerify that the panel or enclosure accepts the S201UP-K4’s single‑pole format and 277 V rating.\u003c\/li\u003e\n\u003cli\u003eLabel the protected circuit clearly to reflect its 4 A rating and 277 V application for future maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho should consider this breaker\u003c\/h3\u003e\n- Electricians and facility managers working with commercial 277 V distribution who need precise, low‑amperage protection on small circuits. - Anyone replacing a worn or mismatched breaker in ABB‑compatible panels where a 4 A, 1‑pole device is the correct specification. \u003cp\u003eWith the ABB S201UP-K4, you get a dedicated, purpose‑built solution for protecting lighter 277 V circuits. It’s the reliable choice when your design calls for a 4 A, single‑pole breaker that fits within ABB’s established line of distribution protection products.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":46423147970722,"sku":"S201UP-K4","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/abb-s201up-k4","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}