Standard thermal-magnetic QO and Homeline 15 and 20 A circuit breakers are listed to UL489 and provide overload and short circuit protection for conductors. The QO and Homeline thermal-magnetic circuit breakers are for general use in protecting branch circuit in residential and commercial applications. Use QO and Homeline 15 and 20 A arc fault circuit interrupter circuit breakers that have been listed to UL1699 in order to provide arc fault circuit protection for the entire branch circuit in accordance with the installation requirements in National Electrical Code section 210.12. Thermal-magnetic circuit breakers are not designed, listed, or intended to provide protection against low level hazardous arcing conditions in branch circuit wiring.

Square D™ Miniature Circuit Breaker, 240 VAC, 48 VDC, 60 A, 50/60 Hz Frequency, 10 kA Interrupt, QOB Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Box Lug Connection, 8 to 2 AWG Wire, Bolted-On Mounting, 40 deg C, 3 in H x 2.25 in W x 2.91 in D Dimensions

• QO and QOB circuit breakers have an overcenter, trip-free toggle mechanism with quick-make, quickbreak action and positive handle indication
• The tripping mechanisms in two-and three-pole circuit breakers operate such that an overcurrent on any pole of the circuit breaker will cause all poles of the circuit breaker to open simultaneously
• Bolt-on QOB circuit breakers are for use in NQO and NQOD panelboards
• QO and QOB circuit breakers have VISI-TRIP feature, which provides a visual indication that the circuit breaker has tripped and interrupted the circuit
• 8 - 2 AWG copper/aluminum
• Common trip
• 10 kA at 240 VAC, 5 kA at 48 VDC
• Standard

• Catalog Square_D_QOB115_Catalog.pdf
• Specification Sheet Square_D_QOB360_Specification_Sheet.pdf