Square D - JJA36250U33X 250A 3-Pole 600V I-Line Solid State Circuit Breaker
Square D - JJA36250U33X 250A 3-Pole 600V I-Line Solid State Circuit Breaker
Product images are representative only. Actual product may vary.
The Square D JJA36250U33X is a 3-pole, 250-amp solid-state molded case circuit breaker (MCCB) rated for 600VAC with I-Line plug-in mounting. Produced by Schneider Electric, this JJ-frame breaker features an adjustable solid-state electronic trip unit for highly accurate overcurrent protection. Designed for demanding three-phase industrial power systems requiring selective coordination and high fault current interruption.
Specifications
| Attribute | Value |
|---|---|
| Part Number | JJA36250U33X |
| Manufacturer | Square D / Schneider Electric |
| Amperage Rating | 250A |
| Voltage Rating | 600VAC |
| Number of Poles | 3 |
| Trip Type | Solid State (Electronic) |
| Mount Type | I-Line Plug-In |
| Interrupting Rating | 65kA @ 600V |
| Standard | UL 489 Listed |
| Frame Series | JJ |
Key Features
- Adjustable solid-state trip unit with long-time, short-time, and instantaneous protection settings
- I-Line plug-in design for fast, reliable installation in Square D I-Line equipment
- 250A rating for heavy industrial feeder and sub-main circuit protection
- 3-pole for complete three-phase 600VAC system protection
- 65kA interrupting rating suitable for high fault-current environments
- UL 489 Listed, NEC compliant
Common Applications
- Main and feeder protection in industrial switchboards
- Motor control center (MCC) bus incoming protection
- Refinery, chemical plant, and heavy industrial power systems
- Large commercial facility main distribution protection
- Sub-main breaker in 600V three-phase distribution systems
Frequently Asked Questions
What is the difference between JJA36250U33X and JJA36250U44X?
Both are Square D 250A, 3-pole, 600V I-Line solid-state MCCBs. The suffix U33X and U44X typically denote different trip unit rating plug configurations, affecting the adjustable current range of the electronic trip unit. Consult Schneider Electric documentation or a qualified electrician to confirm the correct model for your application.
What is the Square D JJA36250U33X used for?
The JJA36250U33X is used for overcurrent and short-circuit protection of 250-amp feeder and main circuits in three-phase 600V industrial and commercial electrical distribution systems.
Is the JJA36250U33X available in new and used condition?
Yes. Alpha Brokers & Controls stocks the JJA36250U33X in both new and reconditioned/used condition. All used circuit breakers are tested and inspected prior to sale.