Federal Pioneer Stab-Lok NB390 Type AL Triple-Pole Circuit Breaker is a high-capacity, durable electrical protection device designed for residential, commercial, and light industrial applications. This model is part of the Federal Pioneer Stab-Lok series, known for its secure connection method and robust performance. Residential and Commercial Electrical Panels (Federal Pioneer Stab-Lok Panels). Light Industrial Panels with Stab-Lok Configuration. Three-Phase Equipment Protection. HVAC Systems, Electric Heaters, and High-Load Circuits
