The Square D HDL36100U33X is a 3 Pole solid state molded case circuit breaker with a current rating of 100 Amps and a voltage rating of 600VAC. It has an interrupting rating of 18kAIC at 480VAC. The HDL36100U33X has a feed-thru connection type and includes long-time, short-time and instantaneous trip functions.
What does the LSI trip function code mean for this breaker?
LSI stands for Long-Time, Short-Time, and Instantaneous. These are the adjustable protection settings on the Micrologic 3.2S electronic trip unit, allowing you to fine-tune the breaker's response to overloads and short circuits.
What does the U33X suffix indicate in the catalog number?
The U33X suffix specifies that the breaker is equipped with a Micrologic 3.2S electronic trip unit, which provides standard LSI (Long-Time, Short-Time, Instantaneous) protection.
What is the standard lug kit for this 100A H-Frame breaker?
The standard mechanical lug kit is part number AL150HD. It accepts 14 AWG to 3/0 AWG aluminum or copper conductors.
Is the HDL36100U33X suitable for reverse feeding?
Yes. Standard unit-mount PowerPacT H-Frame circuit breakers with factory-sealed trip units can be reverse fed.
Are the trip units on this breaker interchangeable?
No. The Micrologic 3.2S trip unit on the HDL36100U33X is factory-sealed and non-interchangeable.
How is this unit-mount breaker installed?
It installs directly to a backpan or panel using screws and features mechanical lugs on both the line and load sides for feed-thru wiring.
Can the HDL36100U33X be mounted on a DIN rail?
By default, this is a unit-mount breaker designed for panel or backpan installation. A separate DIN rail mounting adapter must be purchased to install it on a standard DIN rail.
Does the HDL36100U33X provide ground fault protection?
No. The Micrologic 3.2S trip unit provides Long-Time, Short-Time, and Instantaneous (LSI) protection, but it does not include an equipment ground fault (LSIG) protection function.
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