Circuit Breakers [hopiplaka]

Circuit Breakers plots a reference price and a set of percentage bands around it, scaled to a circuit-breaker distance you choose. It is a chart overlay for studying how far price has moved from a fixed reference, not a signal generator and not an official exchange halt feed.
The anchor is the close of the intraday bar that contains your fix time, in the time zone you set. The default is 15:59 in UTC-4, so the reference lines up with the last minute before 16:00 US Eastern. On each new session bar the script stores that close, adds any calibration offset, and treats the result as the fix. From that fix it builds one distance:
fix × (circuit-breaker percent ÷ 100)
Decimate CB divides that percent by 10 before the distance is calculated. The same distance is then marked above and below the fix.
Preset percentages are 3.5, 4, 7, 10, 13, and 20. These match commonly used limit-style percentages for different asset types, including equity-index style 7 / 13 / 20 limits. The script does not download CME, exchange, or broker reference prices. It only uses the chart’s own fix, or a price you type in.
Lines are drawn at the fix, at the full breaker distance (100%), at the midpoint of that distance (50%, the CE line), and at six intermediate fractions of the same distance on each side: 14%, 26%, 40%, 60%, 74%, and 86%. The intermediate fractions follow a fixed premium/discount partition of the breaker distance. Plot names tag those fractions against the 7 / 13 / 20 family and an internal importance label.