A Federal Pioneer Stab-Lok triple-pole (3-pole) circuit breaker is designed for 240V multi-phase or 3-phase loads in older Canadian electrical panel setups. These molded-case breakers tie three poles together so that an overload on any single phase trips all three lines simultaneously.
Key Technical Aspects
Voltage and Poles: Rated for 240V AC across 3 synchronized poles. [1, 2, 3]
Mounting Styles: Available in plug-in (such as NA series) or bolt-on (such as NB series) configurations depending on your specific panel interior.
Common Uses: Frequently tied to heavy residential or light commercial equipment like 240V heating loops, HVAC compressors, or small 3-phase machinery
