Siemens 3VA9143-0JB11 150A 3P Circuit Breaker | AmpState

Siemens 3VA9143-0JB11 is a 150 A, 3-pole circuit breaker designed for panelboards, load centers, and electrical distribution networks. Engineered for Siemens panel systems, this unit delivers reliable overcurrent protection for 3‑phase circuits and helps maintain electrical safety and uptime.

Key advantages:

• Exact part-number match ensures seamless compatibility with existing Siemens equipment and listings, reducing the risk of incorrect substitutions in panel installations and maintenance.
• 3-pole, 150 A design suits 3‑phase feeders common in commercial and light industrial applications, providing balanced protection across all phases.
• Trusted source from AmpState with availability for immediate stocking, simplifying procurement for maintainers, panel builders, and distributors.
• Ideal for spare inventories to minimize downtime during service outages or panel retrofits.

Use cases and ideal audiences:

• Maintenance teams performing routine protection upgrades or replacements in existing Siemens installations.
• Panel builders who require exact Siemens components to ensure warranty compliance and listed configurations.
• Electrical distributors stocking a reliable, drop-in replacement part for 3‑phase distribution panels.

Why this Siemens model stands out:

• Part of the Siemens 3VA family, designed for predictable trip behavior and durable operation in demanding environments.
• Direct compatibility with panelboards and load centers that specify 3VA9143-0JB11, reducing design and installation guesswork.

Specifications at a glance:

• Manufacturer: Siemens
• Part Number: 3VA9143-0JB11
• Type: Circuit Breaker
• Amperage: 150 A
• Poles: 3

If you’re uncertain about fit, AmpState offers assistance to confirm compatibility with your panel or distribution setup. Message us and we’ll help verify the correct match.

Ready for fast provisioning? Add the Siemens 3VA9143-0JB11 150 A 3P Circuit Breaker to your order and ensure you have the exact part your system was designed for, with the confidence of a direct part-number match and dependable supplier support.