Square D NSB EGB14020 Miniature Circuit Breaker is a 1-pole, 20 A MCB in the E-Frame bolt-on family from Schneider Electric. It is rated for 277 V AC and uses a thermal-magnetic trip to protect circuits from overloads and short circuits. The unit features bolt-on mounting with aluminum lug terminals for 14-6 AWG aluminum or copper conductors, and it provides an interrupting capacity of 35 kAIC at 277 VAC (65 kAIC at 240 VAC). It is designed for use in Square D NF lighting panelboards, offering form, fit, and function compatibility for panelboard upgrades and repairs.
