Serving commercial and industrial facilities, the Eaton QNP3015 is a 15A, 3-pole miniature circuit breaker. It ensures reliable thermal-magnetic overcurrent protection for 240VAC networks. Designed as an exact replacement, this plug-on breaker fits perfectly into Eaton Pow-R-Line, Quicklag, and older Westinghouse panelboards. It eliminates the need for retrofitting and is officially replaced by the QP3015. Rated for 10kAIC, it features common trip functionality and box lug terminals.
What is the direct replacement for the Westinghouse QNP3015?
The Eaton QP3015 is the official, exact replacement for the QNP3015. It fits perfectly into the same panelboards without any need for retrofitting or modification.
What panels accept the QNP3015 miniature circuit breaker?
This breaker is compatible with Eaton Pow-R-Line panelboards, Quicklag panelboards, and older Westinghouse load centers designed for plug-on Quicklag breakers.
Does the QNP3015 use a plug-on or bolt-on mounting configuration?
Despite some legacy descriptions labeling it as bolt-on, the QNP3015 and its modern QP3015 equivalent feature a plug-on mounting style. They snap directly onto the busbar of compatible Quicklag and Pow-R-Line panels.
How does the thermal-magnetic trip unit operate on this breaker?
The breaker uses a fixed thermal-magnetic mechanism with Long-Time and Instantaneous (LI) trip functions. The thermal element responds to prolonged overloads, while the magnetic element trips instantly during short circuits.
What wire gauges are compatible with the terminals on this breaker?
The box lug terminals are designed to accommodate wire sizes from 14 AWG up to 10 AWG. Ensure proper torque specifications are followed during installation to maintain a secure connection.
What does the 10kA at 240V interrupting rating mean for installation?
This rating indicates the breaker can safely interrupt up to 10,000 amps of fault current at 240V. You must verify that the available short-circuit current at your specific panel location does not exceed this 10kA limit.
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