Square D JDL36250U44X Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Square D
JDL36250U44X
Molded Case Circuit Breaker
Brand
Square D
SKU
JDL36250U44X
Quantity
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Square D JDL36250U44X - 250A 3 Pole Molded Case Circuit Breaker
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Description
Belonging to the PowerPacT J-Frame family, this 3-pole, 250A molded case circuit breaker utilizes true RMS sensing for accurate current measurement. It is built for demanding commercial and industrial applications. The unit-mount configuration installs easily into Square D industrial control panels and switchboards. It includes factory-installed line and load lugs supporting 3/0 AWG to 350 kcmil wiring. Advanced functionality is driven by the Micrologic 6.Specifications
| Brand | Square D |
|---|---|
| Part Number | JDL36250U44X |
| Series | JDL |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC |
| Amperage Range | 100-250A |
|---|
| Frame Type | JDL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Industrial Control Panels, Switchboards, Enclosures |
| Wire Gauge | 3/0 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included, Micrologic 6.2 A Trip Unit (Factory Installed) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL, CCC |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, True RMS Sensing, Mercury Free, PVC Free |
Product FAQs
8 answersWhat does the U44X in the JDL36250U44X catalog number indicate?
The U44X suffix indicates that this breaker is equipped with a Micrologic 6.2 A (Ammeter) electronic trip unit. This provides adjustable LSIG (Long-time, Short-time, Instantaneous, and Ground-fault) protection along with integrated current monitoring.
Can the JDL36250U44X be reverse fed?
Yes, this PowerPacT J-frame breaker is suitable for reverse-fed applications. It features a unit-mount design with mechanical lugs on both the line and load sides.
Is the JDL36250U44X rated for 100% continuous current?
No, this specific breaker has a standard 80% continuous current rating. For a 100% rated version, you would need a catalog number with a C suffix, such as JDL36250CU44X.
What enclosures or panels is this breaker compatible with?
The JDL36250U44X is a unit-mount breaker designed for use in Square D industrial control panels, switchboards, and standalone enclosures. It is not designed for I-Line panelboards, which require a plug-on I-Line mounting bracket.
Are the lugs on the JDL36250U44X factory-installed?
Yes, this unit-mount breaker comes with factory-installed mechanical lugs on both the line and load sides, accepting one 3/0 AWG to 350 kcmil aluminum or copper wire per phase.
What is the difference between the JDL36250U44X and the JGL36250U44X?
The difference is the interrupting rating. The JDL has a D interrupting class (18 kA at 480 VAC), while the JGL has a G interrupting class (35 kA at 480 VAC). They share the same physical dimensions and Micrologic 6.2 A trip unit.
Does this breaker provide ground-fault protection for equipment?
Yes, the Micrologic 6.2 A trip unit includes an adjustable ground-fault (the G in LSIG) trip function, which provides equipment ground-fault protection. It is not designed for personnel ground-fault protection (GFCI).
How is the JDL36250U44X mounted?
It is a unit-mount (feed-thru) breaker, meaning it is secured with screws or bolts to a backpan or mounting plate rather than plugging onto a busbar. Both the line and load sides use mechanical lugs for wire connections.
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