Siemens NGG3B020L is a three-pole molded‑case circuit breaker (NGG frame) rated for 20 A at up to 480 VAC, with a 25 kA short‑circuit interrupt rating. It employs a thermal-magnetic trip to provide overload and short-circuit protection for low‑voltage distribution circuits. Suitable for protecting feeders and branch circuits in commercial or industrial installations operated at 480 VAC, this NGG3B020L is a compact, 3P protection device used in panelboards and switchgear.
