Square D EJB14020N Single Pole Circuit Breaker

Square D EJB14020N is a 1-pole, bolt-on E-frame miniature circuit breaker from Schneider Electric's Square D family. It is rated for 277 VAC and 20 A, designed to protect a single hot conductor in NF panelboards used in commercial buildings. The device uses bolt-on mounting on the E-frame and accepts 14–6 AWG aluminum or copper conductors, with a short-circuit interrupting rating of 65 kA at 277 VAC (some listings note 100 kA at 240 VAC). The model number EJB14020N identifies the 20-amp, 1-pole variant within the EJB series and is commonly used in Square D NF panelboard configurations that require a 20 A protective device in a 277 VAC circuit. Typical applications include branch-circuit protection for lighting and general loads within commercial spaces powered by 277 VAC distribution. This breaker is intended for use in compatible Square D NF panelboards; verify panelboard compatibility before replacement.