Industrial 1BU2R Din Rail Mount Circuit Breaker

Altech UR Series 1BU2R is a UL 1077–recognized, single-pole DIN-rail mounted circuit breaker rated at 2 A for 277 VAC systems with a B-trip characteristic. The device is designed for compact panel layouts and has a 17.5 mm width per pole, enabling efficient installation in crowded enclosures. It supports 480Y/277 VAC at 50/60 Hz and provides up to 10 kA short-circuit withstand, delivering reliable protection on the load side of branch circuits. The thermal-magnetic trip mechanism offers rapid response to overcurrent events, and the B-trip curve indicates protection suited for general-purpose circuits and sensitive electronics alike. This 1PO (1-pole) unit is intended for DIN rail installations in industrial panels requiring UL 1077 supplementary protection, such as power supplies, control electronics, and small appliance circuits, making it a precise, space-conscious choice for discrete circuit protection with clear trip signaling.