Square D | J250S | Circuit Breaker | 250A | 3-Pole | 600V

The Square D J250S Circuit Breaker is a rugged, OEM-provided overcurrent protection device engineered for demanding 600V environments. Identified by the part number J250S, this 250A, 3-pole breaker is built for maintenance, retrofit, and replacement projects where exact specifications matter and reliable protection is non-negotiable.

Key specifications

• Amperage: 250 A
• Poles: 3-Pole
• Voltage rating: 600 V

Why choose the J250S for your panel

The J250S delivers precise fit and trip characteristics that align with Square D’s engineering standards, helping you avoid compatibility issues and unnecessary downtime. Its three-pole design ensures all three phases are disconnected simultaneously during a fault, enhancing safety and protecting equipment in 3‑phase power systems. This makes it an ideal choice for retrofit or replacement where OEM form factor and electrical ratings matter—the kind of reliability you rely on in critical electrical infrastructure.

Ideal use scenarios

• Maintenance and service on existing 3‑phase panels rated for up to 600V
• Retrofits and replacements where a direct J250S match is required
• Spare part for field replacements to minimize downtime

Fit and compatibility

Confirm fit and ratings before ordering. The part number J250S is your best reference to ensure compatibility with your panel model and bus arrangement.

Practical considerations

• Keep a labeled spare on hand in service stock for rapid replacement
• Before installation, verify that your panel’s specifications align with the 250 A, 3‑pole, 600 V rating to ensure proper protection