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Square D HLL36150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Square D
HLL36150
Molded Case Circuit Breaker
Brand
Square D
SKU
HLL36150
Quantity
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Square D HLL36150 - 150A 3 Pole Molded Case Circuit Breaker
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Quantity
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Description
Belonging to the PowerPacT H-Frame family, the Square D HLL36150 is a 3-pole, 150A molded case circuit breaker. It provides thermal-magnetic protection for industrial distribution systems. This unit-mount breaker features factory-installed lugs on both the line and load sides. It integrates seamlessly into standard enclosures and control panels. With an L-class interrupting rating of 100kA at 480V, it safely clears severe faults. The device includes a Visi-Trip indicator and is HACR rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | HLL36150 |
| Series | HLL |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 125kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC, 20kA @ 250VDC, 50kA @ 500VDC |
| Frame Type | HLL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Control Panels, Switchboards, Enclosures |
| Wire Gauge | 14-3/0 AWG (Al/Cu) |
| Max Wire | 3/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Padlock Attachment, Visual Trip Indicator |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL, UKCA |
| Temp Rating | -25C to 70C |
| Construction Features | Current Limiting, HACR Rated, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism |
Product FAQs
7 answersHow is the HLL36150 mounted in an electrical system?
This is a unit-mount breaker, meaning it fastens directly to a backpan or mounting plate using screws. It does not plug onto a busbar and is not compatible with I-Line panelboards. It uses feed-thru lug connections on both the line and load sides.
Can I install the HLL36150 in a Square D I-Line panelboard?
No. The HLL36150 is a unit-mount breaker designed for control panels, switchboards, and standalone enclosures. For an I-Line panelboard, you need an I-Line version of the PowerPacT H-frame, such as the HLA36150.
What does the L interrupting rating indicate on this PowerPacT breaker?
The L in the HLL prefix indicates a very high interrupting capacity. It is rated to safely clear fault currents up to 125kA at 240VAC, 100kA at 480VAC, and 50kA at 600VAC, making it suitable for systems with high available fault current.
What wire sizes and materials are supported by the factory lugs?
The standard lugs on this breaker accept conductor sizes from 14 AWG up to 3/0 AWG. They are dual-rated for use with either aluminum or copper wire.
Is this breaker suitable for direct current (DC) applications?
Yes, the HLL36150 is rated for use in DC circuits. It carries an interrupting rating of 20kA at 250VDC and 50kA at 500VDC.
Can I adjust the trip settings on the HLL36150?
No. This breaker uses a thermal-magnetic trip unit with fixed long-time and fixed instantaneous trip functions. It does not offer adjustable dials. Applications requiring adjustable trip curves need a breaker equipped with a Micrologic electronic trip unit.
Can the HLL36150 replace an HDA36150, HGA36150, or HJA36150?
Yes. The HLL36150 shares the exact same physical dimensions and 150A rating as the D, G, and J interrupting tier models. Because the L-tier has a higher interrupting capacity (100kA at 480VAC), it is a safe and code-compliant upgrade for systems originally specifying lower-rated H-frame breakers.
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