Square D HDA36100U43X Circuit Breaker
- 100A
- 3 Pole
- I-Line
Quantity
Square D HDA36100U43X 3 Pole Circuit Breaker
New
Quantity
Description
Square D HDA36100U43X 3 Pole Circuit Breaker
The Square D HDA36100U43X is a 3 Pole solid state molded case circuit breaker with a current rating of 100 Amps and a voltage rating of 600VAC. It has an interrupting rating of 25kAIC at 240VAC, 18kAIC at 480VAC. The HDA36100U43X has an I-Line style plug-in connection type and includes long time, short time and instantaneous trip functions.
Specifications
| Brand | Square D |
|---|---|
| Series | HDA |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 20kA @ 250VDC |
| Frame Type | H |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 14-3/0 AWG |
| 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 |
| Standards | RoHS, REACh, HACR |
|---|---|
| Approval | CE, UL, CSA, NEMA, NOM, IEC |
| Temp Rating | -25 to 70 °C |
Product FAQs
7 answersWhat type of panelboard is the HDA36100U43X compatible with?
This breaker features an I-Line style plug-in connection, making it compatible with Square D I-Line power distribution panelboards and switchboards.
What does the U43X suffix indicate on this PowerPacT H-frame breaker?
The U43X suffix indicates the breaker is equipped with a Micrologic 5.2 A (Ammeter) electronic trip unit. It provides adjustable Long-Time, Short-Time, and Instantaneous (LSI) protection settings along with integrated current monitoring.
How does the I-Line connection mount into the panel?
The I-Line design uses plug-on jaws on the line side that engage directly onto the panelboard bus stack, while the load side uses standard lugs for wire connections. This allows for fast, modular installation without additional mounting hardware.
Does the HDA36100U43X require joint compound for installation?
Yes, Square D I-Line circuit breakers are supplied with factory-applied joint compound on the plug-on connectors. This compound should not be removed. If the breaker is removed and reinstalled, joint compound, such as PJC7201, must be reapplied to ensure proper connection performance.
What specific protection functions does the LSI trip unit provide?
The LSI designation means the Micrologic trip unit allows you to adjust the Long-Time (overload), Short-Time (short circuit with intentional delay for selective coordination), and Instantaneous (immediate short circuit) trip settings to match your specific system requirements.
Can this breaker replace older thermal-magnetic I-Line breakers?
Yes, the PowerPacT H-frame HDA36100U43X is the modern replacement for legacy Square D 100A 3-pole F-frame I-Line breakers, such as the FA or FH series. It occupies the same mounting space in I-Line panelboards while upgrading the system to solid-state electronic protection.
What phase connection does the HDA36100U43X use?
By default, a standard 3-pole I-Line breaker like this one uses an ABC phase connection, drawing power from all three phases of the panelboard bus.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.