Square D EH24020 U Circuit Breaker

The Square D EH24020 U is a two‑pole, 20‑amp molded‑case circuit breaker designed for 480Y/277VAC service and intended for plug‑in installation in NEHB panelboards. As part of the Type EH family, this device employs a thermal‑magnetic trip to protect feeders and branch circuits, with a listed interrupting rating of 14 kA at 480V and support for 14–8 AWG aluminum or copper conductors. It is UL and CSA listed, ensuring compliance for use in compatible Square D panels, and its plug‑in mounting facilitates straightforward replacement in supported equipment. Typical applications include overcurrent protection for 480V distribution feeders and 277V lighting/equipment circuits within commercial environments that rely on NEHB panelboard architectures.