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Square D HLL36125LV Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Square D
HLL36125LV
Molded Case Circuit Breaker
Brand
Square D
SKU
HLL36125LV
Quantity
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Square D HLL36125LV - 125A 3 Pole Molded Case Circuit Breaker
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Description
The Square D HLL36125LV is a 3-pole, 125A molded case circuit breaker from the PowerPacT H-frame family. It is engineered for industrial applications requiring reliable thermal-magnetic protection. This unit-mount breaker includes line and load lugs for installation into control panels and enclosures, serving as a modern replacement for legacy KCL36125 breakers. The "LV" suffix indicates a factory-installed load-side control wire tap. It is rated 100kAIC at 480V with LI trip functions.Specifications
| Brand | Square D |
|---|---|
| Part Number | HLL36125LV |
| Series | HLL |
| Amperage | 125A |
| 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 |
| 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 Included |
| 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
9 answersWhat does the "LV" suffix indicate on the HLL36125LV?
The "LV" suffix means this PowerPacT H-frame breaker includes a factory-installed control wire tap on the OFF (load) end, which is commonly used in industrial automation and control panels.
What legacy Square D circuit breaker does the HLL36125LV replace?
This PowerPacT H-frame breaker serves as a modern replacement for legacy KCL36125 molded case circuit breakers.
What wire sizes are accepted by the standard lugs on this breaker?
The factory-installed lugs accept aluminum or copper wire ranging from 14 AWG to 3/0 AWG.
Can the HLL36125LV be used in DC power systems?
Yes, this thermal-magnetic breaker is rated for DC applications. It provides an interrupting capacity of 20kA at 250VDC and 50kA at 500VDC.
Are the thermal and magnetic trip settings adjustable on this model?
No, the HLL36125LV features a fixed thermal and fixed magnetic (LI) trip unit. The trip thresholds cannot be adjusted in the field.
What does the "LI" trip function code mean on this breaker?
The "LI" code indicates that the thermal-magnetic trip unit provides Long-Time (L) overload protection and Instantaneous (I) short-circuit protection.
Is the HLL36125LV suitable for reverse feeding?
Yes, this thermal-magnetic breaker is reverse-feed capable, allowing line and load connections to be swapped without affecting its protective functions.
Is this breaker considered current limiting?
Yes, the HLL36125LV is a current-limiting circuit breaker. It is designed to reduce peak let-through energy during a fault, which helps protect downstream equipment and allows for tighter series ratings.
Can I use this breaker for HVAC or motor group protection?
Yes, the HLL36125LV is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
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