A reliable solution for commercial power distribution, the Square D QBL22150 operates as a 150-amp, 2-pole molded case circuit breaker. Belonging to the PowerPacT Q-Frame series, it utilizes fixed thermal and magnetic (LI) trip technology to defend against electrical faults. This unit mount MCCB is engineered for compatibility with Square D Q2 enclosures, meter mains, and control panels. With a 10 kAIC rating at 240VAC, it also functions as an exact replacement for legacy Q22150 breakers.
CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489
Approval
CSA, IEC, NOM, UL
Temp Rating
-25C to 70C
Construction Features
HACR Rated
Product FAQs
7 answers
What older Square D circuit breaker does the QBL22150 replace?
The PowerPacT QBL22150 is a direct replacement for legacy Square D Q2 Series circuit breakers, specifically the Q22150. It fits the same mounting holes, door trim, and handle accessories.
Which enclosures are compatible with the QBL22150 circuit breaker?
This unit-mount Q-frame breaker is designed for use in Square D Q2 enclosures, as well as compatible switchboards, control panels, and meter mains.
What wire sizes are accepted by the lugs on the QBL22150?
The factory-installed line and load lugs accept copper or aluminum conductors ranging from 4 AWG to 300 kcmil.
What type of trip unit does the QBL22150 feature?
It features a fixed thermal-magnetic trip unit with long-time and instantaneous (LI) trip functions. The magnetic hold current is 1200A and the magnetic tripping current is 2400A.
Is the QBL22150 rated for 100% continuous current?
No, this circuit breaker has a standard 80% continuous current rating.
What is the difference between the QBL22150, QDL22150, and QGL22150?
These breakers share the same physical Q-frame size and 150A rating but have different interrupting capacities. The QBL22150 is rated at 10 kAIC, the QDL22150 at 25 kAIC, and the QGL22150 at 65 kAIC at 240VAC.
Can I install the QBL22150 in an I-Line panelboard?
No, the QBL22150 is a unit-mount (feed-thru) circuit breaker designed for cabled applications. For I-Line panelboards, you need an I-Line group-mounted breaker, such as the QBA22150.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 14 reviews.