The Federal Pioneer NB20 is a 20A single-pole bolt-on miniature circuit breaker from the trusted Stab-lok range, engineered for dependable overload and short-circuit protection in residential and light commercial panels. Rated at 120/240V AC with a 10 kA breaking capacity, it accepts AWG 14 to AWG 2 aluminium/copper conductors via a screw connector — making it a versatile, code-compliant choice for electricians working on service upgrades, panel replacements, and branch circuit installations. CSA certified and mercury-free, the NB20 delivers the reliability contractors count on when every connection matters.

Specifications