Square D HLL26100 molded case circuit breaker is a PowerPacT H-Frame unit rated 100A with 2 poles and 240VAC, 480VAC, 600VAC, 250VDC and 500VDC ratings. It features a thermal magnetic LI trip with fixed thermal and fixed magnetic settings, unit mounting and line and load side lug connections. The continuous load rating is 80%, and the conductor range is 14-3/0 AWG Cu/Al. It measures 4.09 in wide, 6.4 in high and 3.4 in deep.
Auxiliary Switch, Alarm Switch, Overcurrent Trip Switch, Voltage Release
Accessories
Line and Load Side Lugs
Standards
CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489
Approval
CE, CSA, IEC, NOM, UKCA, UL
Temp Rating
-25C to 70C
Construction Features
HACR Rated, Current Limiting
Product FAQs
9 answers
How should I size continuous loads for the Square D HLL26100?
The breaker has a 100A rated current and an 80% continuous load rating. Apply the 80% rating when sizing continuous loads rather than treating the full 100A rating as a continuous-load allowance.
How do I select the correct AC interrupting rating?
The UL 489 interrupting ratings are 125kA at 240VAC, 100kA at 480VAC and 50kA at 600VAC. Use the rating for your circuit voltage and confirm that it meets or exceeds the available fault current at the installation point.
What interrupting ratings should I use when selecting this breaker for a DC circuit?
The UL 489 ratings are 20kA at 250VDC and 50kA at 500VDC. The IEC Ics ratings are 20kA at 250VDC and 20kA at 500VDC. Compare available fault current with the rating for the applicable standard and circuit voltage.
Can I adjust the thermal or magnetic trip settings?
No. The thermal-magnetic trip has fixed thermal and fixed magnetic settings, with magnetic hold at 900A and magnetic trip at 1700A. Thermal operation addresses sustained overloads, while magnetic operation responds to short-circuit current, so select this breaker where fixed trip behavior suits the circuit.
What conductor sizes and materials can I terminate?
The conductor range is 14-3/0 AWG for copper or aluminum, with lug connections on both the line and load sides. Select conductors within that range and size them for the circuit load and installation requirements; terminal acceptance alone does not determine conductor ampacity.
What mounting method and dimensions should I use for the installation layout?
This is a unit-mount molded case circuit breaker measuring 4.09 in wide, 6.4 in high and 3.4 in deep. Use that mounting method and those dimensions when planning its position and conductor routing.
What does the HACR rating mean when selecting a breaker for HVAC equipment?
HACR refers to heating, air-conditioning and refrigeration applications. The HACR rating is relevant when the equipment requires that breaker feature; also select for the required current, voltage and interrupting rating.
What operating temperature range should I consider when locating the breaker?
The operating temperature range is -25 to 70 °C. Choose an installation location where the temperature around the breaker remains within that range.
How does the 50/60Hz rating guide AC circuit selection?
The Square D HLL26100 is rated for 50/60Hz AC operation. Match the circuit frequency to this rating, and select the applicable AC voltage and interrupting ratings for the installation's available fault current.
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