Altech Corp. E301611 Three-Phase Circuit Breaker

The Altech E301611 Three-Phase Circuit Breaker is a UL1077-listed supplementary protector designed for DIN-rail mounting in control panels and power-distribution enclosures, delivering a 30 A rating for 480Y/277 VAC three‑phase service. This 3-pole device features thermal-magnetic protection and a front-status window, with a Green indicator for off/tripped and Red for on, simplifying diagnostics in crowded switchgear. It offers up to 10 kA short‑circuit withstand (UL) and supports a broad RC current range from 0.5 A to 63 A at 50/60 Hz, with a calibrated operating temperature around 30°C and an operating range of -25°C to 60°C (storage -25°C to 75°C). The unit is 17.5 mm wide per pole for compact DIN-rail installations and accepts copper conductors with a torque specification in the 1.5–2.0 Nm range; terminal sizes accommodate conductor ranges around 14-3 AWG up to approximately 25 mm2 in applicable configurations. It is IP20 rated on the front, and rated for up to 6,000 mechanical on/off cycles and up to 10,000 electrical cycles, making it suitable for repeated control-circuit protection. In addition to line-side protection, it serves load-side protection for branches protecting sensitive electronics, power supplies, and appliance circuits, and carries a DC rating of 48 VDC (self-certified) for associated auxiliary or control circuitry.