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Eaton / Westinghouse HLA3125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Eaton / Westinghouse
HLA3125
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
HLA3125
Quantity
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Eaton / Westinghouse HLA3125 - 125A 3 Pole Molded Case Circuit Breaker
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Description
Built to handle rigorous commercial applications, this 125A, 3-pole breaker delivers consistent thermal-magnetic performance. The Mark 75 series component operates safely up to 600VAC while providing essential long-time and instantaneous protection. Engineered as a unit-mount solution, it restores functionality to legacy Westinghouse switchboards without modifications. When transitioning to current hardware, the HLD3125 serves as its modern substitute. Boasts a 75kAIC rating at 240VAC.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | HLA3125-R |
| Series | HLA |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 75kA @ 240VAC, 35kA @ 480VAC, 30kA @ 600VAC, 20kA @ 250VDC |
| Frame Type | LA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse Panelboards, Eaton Pow-R-Line C Panelboards, Switchboards |
| Wire Gauge | 6 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 6 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, Interchangeable Trip |
Product FAQs
6 answersWhich panelboards are compatible with the HLA3125 breaker?
This LA frame breaker is designed for use in legacy Westinghouse panelboards, Eaton Pow-R-Line C panelboards, and compatible switchboards.
What wire sizes are accepted by the standard lugs?
The included lugs accept either aluminum or copper conductors ranging from 6 AWG up to 350 kcmil.
Does this breaker feature an adjustable trip setting?
Yes, it utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
How is the HLA3125 installed into an electrical system?
It is a unit mount, bolt-on circuit breaker. It bolts directly to the bus or mounting pan rather than plugging in.
Why is this breaker listed under both Eaton and Westinghouse?
Eaton acquired the Westinghouse electrical distribution equipment business. Breakers previously manufactured under the Westinghouse brand are now produced and supported by Eaton, retaining the same LA frame architecture and HLA catalog numbers.
Can this breaker be used in direct current applications?
Yes, it is rated for use in DC systems up to 250VDC, providing a maximum interrupting capacity of 20kA at that voltage.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
1 review
- SGScott G.ReviewingSquare D HLA36050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/1/21Product was shipped quickly and
Product was shipped quickly and fit perfectly.