HLA36125 - Square D - Molded Case Circuit Breaker I-Line Plug-In - 125 Amp - 3 Pole - 600 Volt
HLA36125 - Square D - Molded Case Circuit Breaker I-Line Plug-In - 125 Amp - 3 Pole - 600 Volt
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Square D HLA36125 – 125 Amp Molded Case Circuit Breaker, I-Line Plug-In
Part of the PowerPacT H-Frame series, the Square D HLA36125 is a 3-pole, 125A thermal-magnetic breaker providing robust long-time and instantaneous (LI) protection for demanding industrial applications. It installs into Square D I-Line panelboards and switchboards using a plug-on phase connection for rapid deployment.
Featuring a 100 kAIC interrupting rating at 480VAC, its current-limiting design ensures superior system reliability while maintaining compliance with UL 489 and IEC standards for commercial switchgear.
Product Specifications
| Brand | Square D / Schneider Electric |
| Series | HLA (PowerPacT H-Frame) |
| Part Number | HLA36125 |
| Amperage | 125A |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Poles | 3 |
| AIC Rating | 125kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC, 20kA @ 250VDC |
| Mounting Style | I-Line Plug-In |
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Switchboards |
| Trip Technology | Thermal Magnetic (Non-Interchangeable) |
| Trip Function | LI – Long-Time, Instantaneous (Fixed Thermal, Fixed Magnetic) |
| Wire Range | 14 AWG – 3/0 AWG (Al/Cu) |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle |
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approvals | CE, CSA, HACR, NOM, UL |
| Temp Rating | -25°C to 70°C |
| Construction Features | HACR Rated, Current Limiting, Non-Interchangeable Trip, RoHS Compliant, Mercury Free, PVC Free |
Why Choose the Square D HLA36125?
- High Interrupting Capacity: 100 kAIC at 480VAC for demanding industrial faults.
- Rapid Deployment: Plug-on I-Line connection speeds up installation.
- HACR Rated & Current Limiting: Suited for commercial and HVAC circuits.
- UL 489 / IEC Compliant: Meets standard commercial switchgear requirements.
Common Applications
- Commercial and industrial power distribution panels
- HVAC and mechanical equipment feeders
- Manufacturing and process control systems
- Switchboard and panelboard retrofits
Frequently Asked Questions
What panels is the HLA36125 compatible with?
Square D I-Line panelboards and switchboards that accept plug-in breakers.
What is the interrupting rating of the HLA36125?
100 kA at 480VAC, 125 kA at 240VAC, 50 kA at 600VAC, and 20 kA at 250VDC.
Is the trip unit fixed or adjustable?
Fixed thermal and fixed magnetic, non-interchangeable trip, LI function.
What wire sizes does it accept?
14 AWG to 3/0 AWG, copper or aluminum.
Is this a new unit?
Yes — this listing (SKU HLA36125-N) is new-in-box and ready for immediate installation.