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The E-T-A 412-K14-LN2-3A is a single pole, high-performance thermal circuit breaker. It utilizes a tease-free, trip-free, snap-action mechanism with manual push/pull on/off actuation. The breaker is designed for threadneck panel mounting and features an indicator band on the push button to clearly show the tripped/off position.
Key electrical specifications include a current rating of 3A, a DC voltage rating of 28V, and an AC voltage rating of 115V at 400 Hz. The interrupting capacity is rated at 6,000A for both general use and under UL 1077 standards. The operating temperature range is -55°C to +75°C.
This circuit breaker is suitable for extra-low voltage wiring systems in various applications, including tracked vehicles, aircraft, and general-purpose equipment. It meets stringent environmental and mechanical testing standards, including vibration, shock, corrosion, and humidity resistance. The ingress protection rating for the operating area is IP40.
Available terminal designs include K14 screw terminals (M4, to aircraft specs.) and K54 sealed screw terminals (M4, to vehicle specs.). The breaker is available in different versions such as FN2 (vehicle application), LN2 (aircraft application), and N2 (general application).
The breaker is rated for 28 VDC and 115 VAC at 400 Hz.
It is panel mount with K14 screw terminals (M4) to aircraft specifications.
-55 to +75 °C.
6,000 A.
4,000 operations at 2 x rated current (IN).
Vibration of 10 g (56-500 Hz) and shock of 25 g (11 ms).
IP40 in the operating area and IP00 in the terminal area.