Square D HDL36150U31X Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Square D
HDL36150U31X
Molded Case Circuit Breaker
Brand
Square D
SKU
HDL36150U31X
Quantity
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Square D HDL36150U31X - 150A 3 Pole Molded Case Circuit Breaker
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Description
The HDL36150U31X is a 3-pole, 150A molded case circuit breaker from Square D's PowerPacT H-frame family. Built for commercial and industrial applications, it provides reliable overcurrent protection for switchboards and control panels. This unit-mount breaker installs into standard enclosures and serves as a modern replacement for legacy KAL36150 breakers. Rated for 18kAIC at 480V, it features a Micrologic 3.2 electronic trip unit delivering precise long-time and instantaneous (LI) protection.Specifications
| Brand | Square D |
|---|---|
| Series | HDL |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 20kA @ 250VDC |
| Amperage Range | 60-150A |
|---|
| Frame Type | HDL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Industrial Control Panels, Switchboards, Enclosures |
| Wire Gauge | 14-3/0 AWG (Al/Cu) |
| Max Wire | 3/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 3.2 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Padlock Attachment |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, HACR, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, Reverse Feed, True RMS Sensing |
Product FAQs
9 answersWhat specific trip unit is installed in the HDL36150U31X?
The "U31X" suffix indicates this breaker is equipped with a Micrologic 3.2 standard electronic trip unit. It provides adjustable long-time (L) and instantaneous (I) protection functions.
What is the adjustable long-time trip range for this 150A breaker?
The Micrologic 3.2 trip unit allows the long-time pickup to be adjusted from 50A to 150A, providing precise coordination for your specific circuit requirements.
Can the HDL36150U31X be reverse fed?
Yes, standard unit-mount PowerPacT H-frame breakers with electronic trip units are suitable for reverse-fed (back-fed) applications.
What is the recommended tightening torque for the terminal lugs?
The factory-installed lugs require different torque settings based on wire size: 44.3 lb-in (5 N.m) for 14 to 10 AWG wire, and 124 lb-in (14 N.m) for 8 to 3/0 AWG wire.
Is the HDL36150U31X rated for 80% or 100% continuous current?
This model is a standard 80% continuous current rated circuit breaker.
Can this 3-pole breaker be used in a 2-pole application?
Yes, this 3-pole PowerPacT H-frame breaker can be utilized for 2-pole applications when wired according to Schneider Electric's installation guidelines.
How can I manually test the mechanical operation of this breaker?
All PowerPacT H-frame circuit breakers feature an integral push-to-trip button on the front cover, allowing you to manually trip the breaker and verify the mechanism is functioning correctly.
What does the "D" in the HDL36150U31X catalog number represent?
The "D" designates the breaker's standard interrupting capacity tier. While the specific kAIC ratings are listed in the specs, the D-tier indicates it is the standard fault-current rating for the PowerPacT H-frame family.
What is the replacement lug kit for the HDL36150U31X?
The standard replacement mechanical lug kit for this breaker is catalog number AL150HD, which accepts 14 to 3/0 AWG aluminum or copper conductors.
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Reviews
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Customers rate this product 4.0 out of 5 based on 1 review.
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Rating
1 review
- DTDave T.ReviewingSquare D HDL36070 - 70A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars3/31/22The shipping was very fast
The shipping was very fast and accurate!