Eaton BRN120AF Miniature Circuit Breaker 1 Pole

The Eaton BRN120AF Miniature Circuit Breaker is a 1-pole protection device rated for 20 A at 240 V, designed for 50/60 Hz single‑phase electrical systems. As a BRN model within Eaton’s NSB family, it provides overcurrent protection for a single circuit, interrupting current to prevent damage to wiring and connected loads during faults or overloads. The model designation BRN120AF confirms 1P, 20A, and 240V operation on a single-phase supply, with compatibility for standard 240 V branch circuits in appropriate panel setups. This 1‑pole configuration means it protects one hot conductor and is commonly used where a single hot leg requires overcurrent protection in commercial or residential distribution panels that follow 240 V single‑phase service. When selecting this breaker, verify that your installation uses a 240 V single‑phase supply and that the panel rating and local electrical codes allow the BRN120AF’s 20 A protection level. The 50/60 Hz rating ensures reliable operation across regions with either frequency standard, supporting broad applicability in modern electrical installations.