Schneider Electric LDF36400U31X Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
Schneider Electric LDF36400U31X 3 Pole Circuit Breaker
Re-Certified
Quantity
Description
Schneider Electric LDF36400U31X 3 Pole Circuit Breaker
The Schneider Electric LDF36400U31X is a 3 Pole solid state molded case circuit breaker with a current rating of 400 Amps and a voltage rating of 600VAC. It has an interrupting rating of 25kAIC at 240VAC, 18kAIC at 480VAC. The LDF36400U31X has a unit mounting type and includes long time and instantaneous trip functions.
Specifications
| Brand | Schneider Electric |
|---|---|
| Series | PowerPacT L |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC |
| Frame Type | L |
|---|---|
| Terminal Type | Busbar Connection |
| Wire Gauge | 2x AWG 2/0 to 500KCmil, Aluminum/Copper |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-time, Instantaneous |
| Trip Adjustability | Adjustable Thermal, Adjustable Magnetic |
| Standards | RoHS, REACh, HACR |
|---|---|
| Approval | UL, CSA, NEMA, NOM, IEC |
| Temp Rating | -25 to 70 °C |
Product FAQs
7 answersWhat type of trip unit is installed in the LDF36400U31X?
This breaker features a MicroLogic 3.3 electronic trip unit, which provides standard Long Time and Instantaneous (LI) protection functions.
What is the short circuit interrupting rating at 600VAC?
In addition to its 240VAC and 480VAC ratings, this D-interrupting class breaker has a 14kA interrupting capacity when applied at 600VAC.
Is the LDF36400U31X rated for 80 percent or 100 percent continuous current?
This PowerPacT L-frame circuit breaker carries a standard continuous current rating of 80 percent.
How is the LDF36400U31X mounted in an electrical panel?
This is a unit-mount, or bolt-on, circuit breaker. It is designed to be bolted directly to the panel bus or mounting pan rather than plugging into an I-Line distribution board.
Does this breaker include a manual testing mechanism?
Yes, it features an integral push-to-trip button on the front cover, allowing electricians to manually trip the breaker and verify that the mechanical linkage is operating safely.
What does the U31X suffix indicate in the catalog number?
The U31X suffix specifies that the breaker is equipped with a MicroLogic 3.3 electronic trip unit, which dictates the specific protection functions available on this frame.
Can this breaker be used to replace older Square D L-frame models?
Yes, it can replace older Square D L-frame breakers with matching 400A requirements and D-class interrupting ratings, provided the MicroLogic 3.3 trip unit meets your system coordination needs.
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.