Square D JGP36250U31X Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Square D
JGP36250U31X
Molded Case Circuit Breaker
Brand
Square D
SKU
JGP36250U31X
Quantity
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Square D JGP36250U31X - 250A 3 Pole Molded Case Circuit Breaker
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Description
The JGP36250U31X is a 3-pole, 250A electronic trip MCCB from the Square D PowerPacT J-Frame family. Built for commercial and industrial applications, it delivers reliable overcurrent protection. This unit-mount breaker installs into NF and NQ panelboards, QED switchboards, and industrial control panels. It features line and load side lugs for secure wire terminations. Rated 65kAIC at 240V, it utilizes a Micrologic 3.2 trip unit with adjustable LI settings.Specifications
| Brand | Square D |
|---|---|
| Part Number | JGP36250U31X |
| Series | JGP |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Amperage Range | 70-250A |
|---|
| Frame Type | JGP |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NF Panelboards, Square D NQ Panelboards, Square D QED Switchboards, Industrial Control Panels |
| 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Padlock Attachment |
|---|---|
| Accessories | Micrologic 3.2 Trip Unit, Terminal Nut (Line Side), Lugs (Load Side) |
| 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, 80% Rated, Mercury Free, PVC Free, RoHS Compliant |
Product FAQs
6 answersWhich panelboards are compatible with the JGP36250U31X circuit breaker?
This unit-mount breaker is designed for installation in Square D NF and NQ panelboards, QED switchboards, and industrial control panels. It is not compatible with I-Line busway systems.
What does the U31X suffix indicate on this PowerPacT J-Frame breaker?
The U31X designation means the breaker is equipped with a Micrologic 3.2 electronic trip unit. This provides highly accurate, adjustable long-time and instantaneous (LI) overcurrent protection.
What wire sizes do the standard lugs on the JGP36250U31X accept?
The factory-installed lugs accommodate aluminum or copper conductors ranging from 3/0 AWG to 350 kcmil.
How is this circuit breaker mounted?
The JGP36250U31X is a unit-mount, bolt-on breaker. It fastens directly to a mounting pan or backplate using hardware, rather than plugging onto a busbar like an I-Line breaker.
Can this 3-pole breaker be used in single-phase applications?
Yes. PowerPacT J-Frame 3-pole breakers with standard U31X electronic trip units are marked for single-phase use, but they are restricted to 240VAC systems. You can wire across any two poles for single-phase operation.
Does the Micrologic 3.2 trip unit on this breaker include ground fault protection?
No. The U31X suffix specifies an LI (long-time and instantaneous) trip configuration. It does not include the ground fault (G) protection found in LSIG or LIG trip units.
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