Square D JLA36250U33X Circuit Breaker
- 250
- 3 Pole
- I-Line
Quantity
Square D JLA36250U33X 3 Pole Circuit Breaker
Re-Certified
Quantity
Description
Square D JLA36250U33X 3 Pole Circuit Breaker
The Square D JLA36250U33X is a 3 Pole solid state molded case circuit breaker with a current rating of 250 Amps and a voltage rating of 600VAC, 250/500VDC. It has an interrupting rating of 125kAIC at 240VAC, 100kAIC at 480VAC. The JLA36250U33X has an I-Line style plug-in connection type and includes long time, short time and instantaneous trip functions.
Specifications
| Brand | Square D |
|---|---|
| Series | PowerPacT J |
| Amperage | 250 A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 125kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC |
| Frame Type | J |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 3/0 AWG - 350 MCM |
| Max Wire | 350 MCM |
| Min Wire | 3/0 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
5 answersWhich panelboards are compatible with the JLA36250U33X circuit breaker?
This breaker features an I-Line plug-in connection, making it directly compatible with Square D I-Line power distribution panelboards and switchboards. It mounts directly onto the bus stack without the need for additional mounting hardware.
What protection functions are included with the U33X trip unit?
The U33X suffix designates a Micrologic 3.2 S solid-state electronic trip unit. This provides field-adjustable long-time, short-time, and instantaneous (LSI) trip functions for precise coordination in industrial power systems.
How is the JLA36250U33X secured inside an I-Line panelboard?
The breaker features a plug-in design where the jaws engage the panelboard bus bars. A ratcheting action with a screwdriver is typically used to fully seat the breaker, which is then locked in place using a built-in retaining screw.
What is the interrupting rating of this breaker at 600VAC?
The JLA36250U33X has an interrupting rating of 50kAIC at 600VAC. This complements its higher ratings of 125kAIC at 240VAC and 100kAIC at 480VAC for high-fault current environments.
Is the JLA36250U33X a suitable replacement for older legacy I-Line breakers?
Yes, Square D PowerPacT J-frame breakers are designed to be backward compatible with existing I-Line panelboards and switchboard distribution sections, allowing you to upgrade older 250A breakers without replacing the entire panel.
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