Square D J250R 250A 3P 600V Circuit Breaker, NEMA 3R | AmpState

The Square D J250R 250A 3P 600V Circuit Breaker, NEMA 3R, available from AmpState, is a rugged protection solution built for demanding electrical distribution. Designed for panelboards, load centers, and outdoor installations, this 3-pole breaker delivers reliable overcurrent protection when it matters most.

• Direct part-number match: J250R ensures seamless replacement and fast procurement in existing systems, reducing downtime and guesswork.
• High-capacity protection: 250 A rating across 3 poles provides robust control for heavy feeders and critical circuits.
• 600V maximum system voltage: Suitable for a wide range of commercial and industrial distribution networks.
• NEMA 3R rating: Weather-resistant performance for outdoor or weather-exposed enclosures without compromising safety.
• Square D reliability: Built to meet the standards of modern electrical infrastructure, offering dependable long-term protection.
• AmpState support: Not sure if it fits your panel? Message us and we’ll help confirm compatibility and fit.

Ideal use cases

Maintenance teams stocking spare inventory, panel builders specifying protective devices for new installations, and facility operators updating outdoor electrical distribution will find the J250R an exact-fit solution. Use it to protect feeders in commercial panels, control centers, and outdoor distribution equipment where a durable, outdoor-rated breaker is required.

Key specifications at a glance

• Manufacturer: Square D
• Part Number: J250R
• Product Type: Circuit Breaker
• Amperage: 250 A
• Poles: 3
• Voltage: 600 V
• NEMA Rating: 3R

How this breakersstands apart

Unlike generic solutions, the J250R is a purpose-built Square D component with a direct part-number lineage, ensuring exact compatibility with existing Square D panelboards and distribution equipment. Its 3R enclosure protection makes it a practical choice for installations exposed to the elements, helping prevent weather-induced nuisance trips and enabling reliable service in outdoor environments.

How to buy

Available now from AmpState. If you’re unsure about fit or need part-number confirmation for a specific panel model, simply send us a message and our team will verify compatibility and guide you to the right installation path.