Designed for specialized control scenarios, this 15A three-pole breaker incorporates a factory-installed shunt trip mechanism. This allows facility managers to remotely open the circuit using a 120/208/240VAC control signal. It connects seamlessly into older Square D Q1 panelboards via a standard plug-on mounting interface. Facilities looking for modern equivalents can utilize the QO3151021 as a verified substitute. Rated for 10kAIC at 240VAC, the thermal-magnetic unit includes a Visi-Trip.
HACR Rated, Visual Trip Indicator, Common Trip, Trip-Free Mechanism, Quick-Make/Quick-Break
Product FAQs
5 answers
Which panelboards accept the Q1315-1021 circuit breaker?
This plug-in breaker is specifically designed for installation in legacy Square D Q1 panelboards.
What does the -1021 suffix mean on this Square D part number?
The -1021 suffix indicates the breaker is equipped with a factory-installed 120-240VAC shunt trip, allowing for remote tripping of the circuit.
Does this breaker require bolt-on hardware for installation?
No, the Q1315-1021 features a plug-in connection type, designed to snap directly onto the bus of Square D Q1 panelboards without the need for mounting bolts.
Can the thermal-magnetic trip unit on the Q1315-1021 be adjusted?
No, this breaker has a fixed trip mechanism. It provides standard long-time and instantaneous (LI) protection but does not support field adjustments for the trip curve.
What wire types and sizes are supported by the Q1315-1021 lugs?
The terminal lugs are rated for both aluminum and copper (Al/Cu) conductors, accepting wire gauges from 14 AWG up to 8 AWG.
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Review summary
Customers rate this product 5.0 out of 5 based on 1 review.