Engineered for commercial use, the Square D QDL22110 is a 2-pole, 110A MCCB from the PowerPacT Q-Frame family. It provides thermal-magnetic protection with LI trip functions. This unit mount breaker features line and load lugs. It installs into Square D NQ panelboards and switchboards, serving as a replacement for legacy Q2L2110 breakers. Rated at 25kAIC at 240VAC, it ensures robust fault clearing. The unit is HACR rated and includes a push-to-trip mechanism.
What is the difference between the QDL22110 and the QGL22110 or QJL22110?
The difference is the interrupting rating. The QDL22110 is rated for 25 kA at 240V, while the QGL is rated for 65 kA, and the QJL is rated for 100 kA. All share the same physical Q-frame size and 110A rating.
What is the recommended tightening torque for the lugs on the QDL22110?
The line and load lugs should be torqued to 248 lb-in (28 N.m) for wire sizes ranging from 4 AWG to 300 kcmil aluminum or copper.
How does this unit-mount Q-frame breaker differ from an I-Line version?
This unit-mount breaker features lugs on both the line and load ends for cabled connections and is bolted directly to a backpan or enclosure. I-Line breakers are designed to plug directly into an I-Line panelboard bus.
Which standalone enclosures are compatible with the QDL22110 breaker?
This 2-pole Q-frame breaker can be installed in Square D Q2-series enclosures, such as the indoor Q22200NS or the outdoor NEMA 3R rated Q2200MRBE.
Can the QDL22110 be reverse fed?
Yes, standard PowerPacT Q-frame unit-mount thermal-magnetic breakers can be forward or reverse fed, making them suitable for use as back-fed main breakers.
Are the trip settings adjustable on the QDL22110?
No, this breaker features a fixed thermal-magnetic trip unit. The long-time thermal overload is fixed at 110A, and the instantaneous magnetic short-circuit trip is fixed at 2400A, with a magnetic hold current of 1200A.
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Review summary
Customers rate this product 5.0 out of 5 based on 3 reviews.