Siemens HEB1B020 is a 1-pole, 20A, 277V molded‑case circuit breaker from the HEB series, offering a 65 kA interrupting rating at 277V. This thermal‑magnetic device uses long‑time and instantaneous trip functions and is supplied in a bolt‑on version with load‑side lug terminals. Rated for 40°C ambient, it protects a single 277V circuit in industrial and commercial electrical distributions requiring high interrupting capacity and reliable short‑circuit protection.
