Square D HLA36060U31X Molded Case Circuit Breaker
- 60A
- 3 Pole
- I-Line
Quantity
Square D HLA36060U31X - 60A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the PowerPacT H-Frame series, this 60-amp electronic trip molded case circuit breaker delivers advanced protection for commercial facilities. The I-Line mounting configuration allows for fast, secure installation into compatible Square D panelboards and switchboards. Featuring a Micrologic 3.2 trip unit, it offers adjustable long-time and instantaneous settings for superior coordination compared to standard thermal-magnetic options. It carries a robust 100kAIC rating at 480VAC.Specifications
| Brand | Square D |
|---|---|
| Part Number | HLA36060U31X |
| Series | HLA |
| Amperage | 60A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 125kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC |
| Frame Type | H |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Micrologic 3.2 Trip Unit |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, HACR, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, True RMS Sensing, RoHS Compliant, Mercury Free, PVC Free |
Product FAQs
8 answersWhat panels are compatible with the HLA36060U31X?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It utilizes an I-Line style plug-in connection that mounts directly onto the internal bus assembly.
What does the U31X suffix indicate on this PowerPacT breaker?
The U31X suffix signifies that the breaker is equipped with a Micrologic 3.2 electronic trip unit. This provides adjustable Long-Time and Instantaneous (LI) protection, offering more precise coordination capabilities than standard thermal-magnetic breakers.
Can the HLA36060U31X be used in single-phase applications?
Yes, but with limitations. Square D PowerPacT H-frame breakers with Micrologic standard trip units (U31X) are marked for single-phase use on 240VAC circuits only. When wiring for single-phase, you can use any two poles.
How is the I-Line connection secured during installation?
The breaker features plug-in jaws that engage directly with the panel's bus stack. Once seated, it is mechanically fastened to the panelboard mounting pan using a retaining bracket to ensure a secure, vibration-resistant connection.
Are the trip settings on this 60A breaker adjustable?
Yes, the integrated Micrologic 3.2 electronic trip unit features adjustable dials for both the Long-Time and Instantaneous (LI) pickup settings. This allows electricians to fine-tune the protection curve to match specific load and coordination requirements.
What wire sizes are accepted by the standard lugs?
The factory-installed lugs on this breaker accept aluminum or copper conductors ranging from 14 AWG to 3/0 AWG. Always apply the manufacturer-specified torque when terminating the wires.
Can I install internal accessories in the HLA36060U31X?
Yes, the PowerPacT H-frame design allows for field-installable internal accessories, such as shunt trips, auxiliary switches, and undervoltage releases. These components mount securely under the breaker's front accessory cover.
Can this breaker replace older thermal-magnetic I-Line breakers?
Yes, the HLA36060U31X can physically replace older 60A H-frame thermal-magnetic I-Line breakers. However, because it utilizes an electronic Micrologic trip unit, you must verify that the adjustable LI trip curve aligns with your facility's existing coordination study.
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