Engineered for robust commercial and industrial applications, this 150-amp Q-Frame molded case circuit breaker delivers reliable long-time and instantaneous trip functions. The thermal-magnetic mechanism handles demanding electrical loads. Designed as a unit-mount solution, it integrates into Square D enclosures and panelboards. This model serves as an exact replacement for legacy Q22150 breakers. With a 25kA interrupting capacity at 240V, it ensures robust fault clearing.
What is the difference between the Square D QDL, QBL, QGL, and QJL circuit breakers?
The primary difference is their interrupting rating at 240VAC. The QBL is rated at 10kAIC, the QDL at 25kAIC, the QGL at 65kAIC, and the QJL at 100kAIC. They share the same physical Q-frame dimensions and unit-mount configuration.
What types of panels or enclosures are compatible with the QDL22150?
The QDL22150 is a unit-mount Q-frame breaker designed for use in Square D individual enclosures, such as the Q2150MRBE, as well as compatible Square D switchboards and panelboards. It is not designed for I-Line panelboards, which require a different mounting construction.
Does the QDL22150 come with factory-installed lugs?
Yes, this unit-mount breaker includes factory-installed line and load lugs. The lugs are designed to accept both aluminum and copper conductors.
Can the QDL22150 be reverse-fed for backfeed applications?
Yes, standard thermal-magnetic Q-frame breakers like the QDL22150 can be reverse-fed. When used as a back-fed main breaker, ensure it is properly labeled and installed with an approved retaining barrier or hold-down kit as required by the National Electrical Code.
Can I use the QDL22150 to replace an older Q22150 breaker?
Yes, the PowerPacT Q-frame QDL22150 is the direct, modern replacement for the legacy Square D Q22150 unit-mount circuit breaker.
Is the QDL22150 rated for 100 percent continuous operation?
No, standard Q-frame breakers like the QDL22150 are rated for 80 percent continuous load. Continuous loads should not exceed 120 amps for this 150-amp breaker.
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Review summary
Customers rate this product 5.0 out of 5 based on 3 reviews.