Siemens | QJ3B150A01 | Circuit Breaker | 3-Pole | 240V

Siemens QJ3B150A01 Circuit Breaker delivers reliable protection for demanding three‑phase systems. This 3‑pole, 240V protective device is purpose‑built for maintenance, retrofit, and replacement projects where exact specifications matter and compatibility is non‑negotiable.

Key details

• Poles: 3‑Pole
• Voltage: 240V
• Part number: QJ3B150A01

Notes: Confirm fit and ratings before ordering. The part number is the best reference for compatibility, ensuring you get the exact Siemens replacement that matches your panel and wiring configuration.

Why this Siemens circuit breaker stands out

Built to perform within Siemens‑compatible switchgear and control panels, the QJ3B150A01 provides balanced, three‑phase protection that helps prevent damage from overloads and short circuits. Its 3‑pole design supports even protection across all phases, simplifying wiring logic in industrial 3‑phase environments and reducing the risk of partial faults in your system.

Ideal use cases

• Maintenance: Keep a ready spare for fast, downtime‑reducing replacements in industrial facilities.
• Retrofit: Upgrade older panels to a modern 240V, three‑phase protection scheme using a Siemens‑approved component.
• Replacement: Restore reliability in existing Siemens QJ‑series installations with a genuine QJ3B150A01 unit.

Practical guidance for installers

Before purchasing, verify that your panel accepts QJ‑series breakers and that the 3‑Pole, 240V rating aligns with your system requirements. Use the part number as the primary compatibility reference, and follow all safety and torque guidelines from your facility’s standards to ensure a proper, secure installation.

Secure this Siemens QJ3B150A01 3‑Pole 240V circuit breaker to safeguard your 3‑phase electrical infrastructure with a trusted, compatible component.