Square D - JJA36250 250A 3-Pole 600V I-Line Plug-In Circuit Breaker
Square D - JJA36250 250A 3-Pole 600V I-Line Plug-In Circuit Breaker
Product images are representative only. Actual product may vary.
The Square D JJA36250 is a 3-pole, 250-amp thermal magnetic molded case circuit breaker (MCCB) rated for 600VAC with I-Line plug-in mounting. Manufactured by Schneider Electric, this JJ-frame breaker delivers dependable overload and short-circuit protection for large industrial feeder and main circuits in three-phase 600V power distribution systems. The I-Line plug-in interface enables fast, reliable installation in compatible Square D switchboards.
Specifications
| Attribute | Value |
|---|---|
| Part Number | JJA36250 |
| Manufacturer | Square D / Schneider Electric |
| Amperage Rating | 250A |
| Voltage Rating | 600VAC |
| Number of Poles | 3 |
| Trip Type | Thermal Magnetic |
| Mount Type | I-Line Plug-In |
| Interrupting Rating | 65kA @ 240V / 25kA @ 600V |
| Standard | UL 489 Listed |
| Frame Series | JJ |
Key Features
- I-Line plug-in mounting for quick installation in Square D JJ-frame compatible switchboards
- Thermal magnetic trip for reliable overload and short-circuit protection
- 250A rating for large industrial feeder and main circuit protection
- 3-pole for complete three-phase 600V system protection
- UL 489 Listed, NEC compliant
- Compatible with Square D JJ-frame I-Line accessories
Common Applications
- 250A feeder and sub-main circuit protection in industrial 600V switchboards
- Motor control center (MCC) feeder circuit breakers
- Heavy manufacturing and process plant distribution panels
- Commercial building main and sub-main protection
- Industrial three-phase 600V power distribution systems
Frequently Asked Questions
What is the Square D JJA36250?
The Square D JJA36250 is a 250-amp, 3-pole, 600V thermal magnetic I-Line plug-in MCCB used for overcurrent and short-circuit protection of feeder and main circuits in three-phase 600V industrial and commercial electrical systems.
What is the difference between JJA36250 and JJA36250U31X or JJA36250U33X?
The JJA36250 uses a fixed thermal magnetic trip unit, while the U31X, U33X, and U44X variants use an adjustable solid-state electronic trip unit. The solid-state versions offer adjustable settings for selective coordination; the thermal magnetic version provides fixed, straightforward protection at a lower cost.
Is the JJA36250 in stock?
Yes. Alpha Brokers & Controls stocks the Square D JJA36250 in new condition and ships quickly. Contact us to confirm current availability and lead time.