Siemens MQ115 15A 1-Pole 120 V Circuit Breaker Potential Transformer

Introduce reliable protection to your 120 V circuits with the Siemens MQ115 15A 1-Pole Circuit Breaker. This genuine Siemens part is designed to protect a single hot leg in residential or light commercial panels, delivering dependable overcurrent protection when you need it most.

• Current rating: 15 A
• Poles: 1
• Voltage rating: 120 V
• Part number: MQ115

Why choose the Siemens MQ115? It’s a straightforward, drop-in replacement that’s built to fit compatible Siemens panels, ensuring a clean, secure connection without the guesswork. The 1-pole configuration is ideal for protecting individual circuits such as lighting runs, outlets in a dedicated area, or other single-hot-leg applications, while the 120 V rating matches typical residential and light commercial electrical infrastructure.

Key benefits and practical use cases:

• As part of the Siemens MQ series, the MQ115 is designed for reliable integration in compatible load centers and panels, helping you avoid fitment issues and service interruptions.
• The 1-pole design is perfect for protecting a single branch circuit—great for lighting, outlets, or a dedicated appliance circuit.
• With a 15 A rating at 120 V, you know exactly where this breaker fits in your electrical plan and how it tolerates surge or overload conditions within normal household or light commercial loads.
• In systems that employ potential transformers (PTs) for monitoring or protection schemes, the MQ115 provides reliable branch protection aligned with standard 120 V circuits.

Installation and best practices:

• Always de-energize the main power before replacing a breaker. Use proper PPE and follow local codes.
• Verify that the breaker is compatible with your panel’s labeling and listing to ensure proper fit and safe operation.
• Inspect the mounting and connections for tightness after installation to maintain reliable interruption performance.

The Siemens MQ115 15A 1-Pole 120 V Circuit Breaker is the practical, purpose-built choice for electricians and homeowners who value exact fit, straightforward protection, and compatibility with Siemens panels. It’s the right move when you need dependable single-pole protection for a dedicated circuit in 120-volt environments.