The Altech 1C3UL is a UL489 miniature molded‑case circuit breaker (one‑pole) designed for DIN‑rail mounting in control panels. Rated 3 A at 277 V AC (50/60 Hz), it provides thermal‑magnetic overcurrent protection with a 10 kA short‑circuit interrupting capacity, and its 17.5 mm width fits standard DIN rails with line/load reversible mounting. This unit protects individual control circuits in industrial automation and electrical distribution, and it is part of Altech’s UL489 family of breakers used in panels and cabinets for reliable overcurrent protection in 277 V AC systems.
