A reliable solution for commercial power distribution, the HGL36070 is a 70-amp, 3-pole molded case circuit breaker from Square D. As part of the PowerPacT H-Frame series, it utilizes a fixed thermal-magnetic trip unit to provide essential long-time and instantaneous (LI) protection. This unit-mount breaker is suitable for integration into industrial control panels and switchboards. It connects via standard lugs and replaces older FHL36070 breakers. It delivers a 65 kAIC rating at 240VAC.
What type of lugs are standard on the HGL36070 breaker?
This unit-mount breaker comes standard with AL150HD mechanical lugs on both the line and load sides. These lugs accept 14 AWG to 3/0 AWG aluminum or copper wire.
What is the recommended tightening torque for the AL150HD lugs on this breaker?
For 14 AWG to 10 AWG wire, the tightening torque is 44.3 lb-in (5 N.m). For 8 AWG to 3/0 AWG wire, the required torque is 124 lb-in (14 N.m).
Can the HGL36070 be installed directly into a Square D I-Line panelboard?
No. The HGL36070 is a unit-mount breaker designed for base mounting or DIN rail installation with the proper adapter. For an I-Line panelboard, you must use an I-Line configured breaker, such as the HGA36070.
What does the "G" in the HGL36070 catalog number indicate?
The "G" designates the interrupting rating level of the breaker. In the PowerPacT H-frame series, the G rating provides 35kA at 480VAC and 65kA at 240VAC. Other available interrupting levels include D, J, L, and R.
Is the HGL36070 suitable for reverse-feed applications?
Yes, this thermal-magnetic PowerPacT H-frame breaker is suitable for reverse feeding. It does not have line and load side restrictions.
Does this breaker support field-installable internal accessories?
Yes, the PowerPacT H-frame series supports a variety of field-installable internal accessories. This includes shunt trips, auxiliary switches, and alarm contacts that can be added behind the front cover.
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