The Eaton Cutler-Hammer BAB3030H is a 30 Amp, 3-Pole, 120/240V bolt-on thermal-magnetic circuit breaker built for demanding industrial and commercial panelboard applications. Engineered as a direct replacement for Westinghouse QNBL type breakers, it fits a wide range of compatible panelboards — including Eaton, Cutler-Hammer, Bryant, Westinghouse, Challenger, and Novaline — making it a versatile choice for service upgrades and retrofit work. With a 10 kAIC interrupt rating and a 10,000/22,000 A interrupting capacity, the BAB3030H delivers robust overcurrent protection that electricians and contractors can rely on across industrial, multi-family, and light commercial job sites. CSA Approved and UL Listed for confidence on every installation.

Specifications

Manufacturer Eaton / Cutler-Hammer
Family BAB Bolt-On Miniature Quicklag
Poles 3 Pole
Amperage 30 A
Voltage Rating 120/240 V
Connection Type Bolt-On
Interrupting Rating 10 kAIC (10,000 / 22,000 A)
Compatible Panelboards Eaton, Cutler-Hammer, Bryant, Westinghouse, Challenger, Novaline
Replaces Westinghouse QNBL Type
Dimensions (H × W × L) 4.8" × 3.2" × 3.8"
Certifications CSA Approved, UL Listed