Square D HDL36090 Molded Case Circuit Breaker

Yes. Standard unit mount PowerPacT H-frame circuit breakers with fixed thermal magnetic trip units, like the HDL36090, do not have line and load directional restrictions and are suitable for reverse feeding applications.

Yes, the PowerPacT H-frame series is the modern direct replacement for legacy Square D F-frame breakers, such as the FAL36090 or FHL36090. However, the physical dimensions and mounting hole patterns differ, so adapter plates or backpan modifications are usually required when retrofitting an older panel.

This breaker typically utilizes AL150HD mechanical lugs on both the line and load ends. These standard single barrel lugs accept one 14 AWG to 3/0 AWG copper or aluminum conductor per terminal.

Yes, the PowerPacT H-frame features a tool-free, snap-in accessory compartment located directly behind the front cover. This allows electricians to quickly field install internal accessories like auxiliary switches, overcurrent trip switches, and shunt trips without voiding the UL listing.

The HDL36090 is a unit mount breaker, meaning it bolts directly to a backpan and utilizes mechanical lug connections for both the line and load wiring. Conversely, an I-Line version features a specialized plug-on base on the line side that stabs directly into a Square D I-Line distribution busboard.

PowerPacT breakers include a built-in Visi-Trip indicator. When the breaker trips due to a fault, a highly visible red flag appears in a small window on the breaker face. This allows personnel to quickly identify the tripped breaker in a crowded panel without guessing or measuring voltage.

No. This breaker is equipped with a standard thermal magnetic trip unit where both the long-time (thermal) and instantaneous (magnetic) trip points are fixed at the factory. It does not offer the adjustability found in higher-end breakers equipped with Micrologic electronic trip units.