Square D HGA36150U53X Molded Case Circuit Breaker
- 150A
- 3 Pole
- I-Line
Square D
HGA36150U53X
Molded Case Circuit Breaker
Brand
Square D
SKU
HGA36150U53X
Quantity
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Square D HGA36150U53X - 150A 3 Pole Molded Case Circuit Breaker
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Description
A powerful upgrade for commercial systems, the Square D HGA36150U53X is a 150A, 3-pole electronic trip circuit breaker. It serves as a modern replacement for legacy KA36150 and KH36150 models. Designed for Square D I-Line panelboards and switchboards, this breaker utilizes a plug-on mounting style for secure integration. It includes load-side lugs for 14 to 3/0 AWG wire. The advanced Micrologic 5.2 E trip unit delivers precise LSI protection and integrated energy metering. It is 80% rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | HGA36150U53X |
| Series | HGA |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 208Y/120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC, 35kA @ 480VAC, 18kA @ 600Y/347VAC, 18kA @ 600VAC |
| Amperage Range | 37.5-150A |
|---|
| Frame Type | HGA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Switchboards |
| Wire Gauge | 14 AWG - 3/0 AWG (Al/Cu) |
| Max Wire | 3/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Communication Module, 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 |
| Approval | CCC, CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, 80% Rated, Energy Metering, True RMS Sensing, Non-Interchangeable Trip |
Product FAQs
7 answersWhich panelboards are compatible with the HGA36150U53X circuit breaker?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection and will not fit standard QO, NQ, or NF series panels.
What does the LSI designation mean for the trip unit on this breaker?
LSI indicates that the electronic trip unit features adjustable settings for Long-Time, Short-Time, and Instantaneous trip functions. This allows precise coordination with other breakers in your electrical system to isolate faults effectively.
What does the 'G' in the HGA36150U53X part number signify?
In the PowerPacT H-Frame nomenclature, the 'G' indicates the interrupting rating tier. A G-interrupting tier provides a maximum of 65kA at 240V, 35kA at 480V, and 18kA at 600V.
What wire sizes are accepted by the lugs on this H-Frame breaker?
The factory-installed lugs accept wire gauges from 14 AWG up to 3/0 AWG. They are rated for both aluminum and copper conductors, providing flexibility for various installation requirements.
Does the HGA36150U53X require a separate mounting bracket for I-Line panels?
No additional mounting bracket is required. The breaker features a built-in I-Line plug-in connection that engages directly with the busbar stack in an I-Line panelboard or switchboard.
Can I use this breaker on a 600V system?
Yes, it is rated for up to 600VAC with an 18kA interrupting capacity. However, if your 600V system has an available fault current higher than 18kA, you will need a breaker with a higher interrupting tier, such as a J-Frame or an H-Frame with a higher AIC rating.
How does the electronic trip unit improve safety compared to standard thermal-magnetic breakers?
The electronic trip unit provides highly accurate, repeatable trip curves that are not affected by ambient temperature variations. The adjustable LSI settings allow panel builders to fine-tune the protection scheme, which can help reduce arc flash hazards and improve overall system reliability.
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