Siemens | QJ3M100HL | Circuit Breaker | 100A | 3-Pole | 240V

Meet the Siemens QJ3M100HL Circuit Breaker — a purpose-built 3-pole, 100A protection device designed for 240V electrical systems. Crafted for maintenance, retrofit, and replacement tasks, this breaker brings Siemens reliability to the heart of your panel, helping you keep critical circuits safe and operational.

Key specifications that matter

• Amperage: 100 A
• Poles: 3-Pole
• Voltage: 240 V
• Model reference: QJ3M100HL

Why this model stands out

This Siemens breaker is not just a drop-in part; it’s a conscientious choice for projects where exact compatibility matters. The QJ3M100HL is engineered to fit Siemens panels that require a three-pole, 240V configuration with a 100A rating. When you order using the precise part number, you’re aligning with the exact trip curves, mounting geometry, and electrical characteristics your system depends on.

Ideal use cases

• Maintenance outages where a like-for-like replacement is essential to restore original protection profiles
• Retrofit projects upgrading or expanding 3-phase distribution in commercial or light-industrial environments
• New installations or panel rebuilds that specify a 3-Pole, 240V, 100A Siemens breaker with precise compatibility

Compatibility and installation tips

Before you order, confirm that your panel requires a QJ3M100HL-style unit and that the amperage, voltage, and pole configuration match your service needs. The part number is the most reliable reference for compatibility, ensuring you don’t compromise protection or mounting fit. When installing, follow standard safety procedures for live-panel work and verify that the circuit breaker seats securely and aligns with the bus bars.

Practical insights and benefits

• Reliable protection for three-phase loads up to 100 A in 240 V systems, reducing the risk of overloads and short circuits
• Streamlines maintenance and replacements by leveraging a known Siemens specification, minimizing compatibility surprises
• Clear, exact identification via the QJ3M100HL part number helps procurement and inventory management in facilities