Square D PowerPact QBL32070 Q-Frame 3P 70A MCCB Lug 80%
250A Frame | 70A | 3P | 10kA@240Vac | Thermal-Magnetic (Fixed)
Engineered for performance in low-voltage distribution, the Square D QBL32070 PowerPact Q-Frame MCCB offers fixed thermal-magnetic trip protection in a space-efficient design. This 3-pole device is rated at 70A with 240V AC voltage capability and an interrupting capacity of 10kA@240Vac. It features fixed thermal-magnetic trip elements in each pole, providing both overload (thermal) and short-circuit (magnetic) protection calibrated at 40 degrees Celsius ambient temperature, rated at 80% continuous current per NEC Article 240.6. The QBL32070 is configured with box-type lug connections accommodating 4 AWG-300 kcmil Al/Cu conductors for reliable cable termination. This device is UL 489 listed, CSA C22.2 No.5 certified, and NOM approved for use across North American installations, with an over-center toggle mechanism providing quick-make quick-break operation and trip-free functionality. As a direct replacement for the legacy Q2 Series devices, the QBL32070 provides enhanced performance and compatibility with modern electrical distribution equipment. Field-installable accessories include handle padlock attachments (QBPA), service barriers (QSB2/QSB3), and mechanical interlock kits (QBMIK) for enhanced safety. The breaker operates reliably at ambient temperatures up to 40 degrees Celsius with correction factors available for higher temperature environments. Physical dimensions of 6.47" H x 4.50" W x 4.25" D with an approximate weight of ~4 lbs ensure compatibility with standard enclosures and panelboards. The device features a rated frequency of 50 to 60 Hz and an endurance rating of 1000 load cycles and 5000 no-load cycles for a total of 6000 operations.
Key Features
This PowerPact MCCB features Thermal-Magnetic (Fixed) trip protection rated 70A at 240V AC. Frame size: 250A. Interrupting capacity: 10kA@240Vac. Designed for reliable overcurrent protection in industrial and commercial power distribution systems.
Applications
Suitable for main distribution panels, motor control centers, switchboards, and feeder circuit protection in industrial facilities, data centers, and commercial buildings. Compliant with UL 489, CSA C22.2 No.5-02, NOM-003-SCFI, NEMA AB-1.
