Siemens | QJ3B150L | Circuit Breaker | 150A | 3-Pole | 240V

Siemens QJ3B150L circuit breaker delivers reliable protection in a 150 A, 3-Pole configuration for 240V three-phase systems. Designed for maintenance, retrofit, and replacement projects, this unit ensures your panel stays within spec and your critical loads remain safeguarded. Remember: the part number is the most dependable reference for compatibility, so verify against your panel labeling before ordering.

Key specifications

• Amperage: 150 A
• Poles: 3-Pole
• Voltage: 240 V
• Configuration: 3-pole, suitable for 3-phase networks

Why this Siemens 150A, 3-Pole, 240V breaker stands out

• Precisely matched to Siemens panel boards and 3-phase distribution where a 150‑amp protection device is required
• Standard Siemens form factor enables straightforward swap-in replacement in compatible enclosures, minimizing downtime
• Proven reliability from Siemens engineering, delivering consistent over-current protection for demanding electrical environments
• Clear compatibility reference: use the QJ3B150L part number to confirm exact fit with your panel model and labeling

Ideal use cases

• Maintenance: replace aging or faulty breakers to restore full protection and restore service quickly
• Retrofit: upgrade existing panels to a Siemens 150 A, 3‑pole 240V device for consistent protection and part standardization
• Replacement: restore protective zoning in commercial or industrial panels that operate on 240V three-phase power

How to verify compatibility

• Before ordering, confirm fit and ratings align with your panel; the QJ3B150L part number is the most reliable reference
• Check your panel’s model and labeling to ensure it accepts a 3‑pole, 150 A, 240 V device
• Ensure the enclosure wiring and bus arrangement match the breaker style to guarantee proper installation and protection

For projects requiring robust, dependable protection in a three-phase 240V system, the Siemens QJ3B150L circuit breaker provides precise amperage, reliable performance, and a straightforward path to compatibility—delivering peace of mind for maintenance crews, facilities engineers, and electrical contractors alike.