Final Sale Zinsco UBIZ290 – 90A 2 Pole Miniature Circuit Breaker

Manufactured to safely restore power in older residential applications, the UBIZ290 is a 90A, two-pole miniature circuit breaker. It provides reliable thermal-magnetic protection for 120/240VAC circuits. This thick series plug-on breaker is an exact replacement for original Zinsco QC90 and QCAL90 models. It installs seamlessly into legacy Zinsco Type QC load centers without requiring any adapters. Fully HACR rated and UL 489 listed, it features a 10kAIC interrupting capacity.