Siemens QR23B225L - 225A, 3-Pole, Molded Case Circuit Breaker

The Siemens QR23B225L is a robust 3-pole molded case circuit breaker engineered for dependable overcurrent protection in demanding electrical environments. With a 225A rating, this device is built to handle substantial load demands while delivering reliable protection in panelboards, switchboards, and control panels. Designed for industrial, commercial, and OEM applications, it helps safeguard distribution circuits and motor control centers where safe operation and quick fault isolation matter most.

Core features at a glance

• Current rating: 225 A
• Poles: 3-Pole
• Breaker type: Molded Case Circuit Breaker (MCCB)
• Configuration: Suitable for three-phase electrical systems in a compact, integrated form factor
• Applications: Panelboards, switchboards, control panels, distribution panels, and motor control centers

Where it shines

The QR23B225L is purpose-built for scenarios where a dependable, easy-to-maintain protection device is required across multiple three-phase feeders. It excels in environments such as manufacturing lines, processing facilities, HVAC and pumping systems, and automation racks where large motors and drives demand reliable interruption of fault currents without unnecessary downtime.

Why choose this Siemens MCCB

• Reliability in demanding workloads: The 225A rating aligns with mid-to-large electrical feeders, reducing nuisance trips while maintaining critical protection.
• Three-phase protection with streamlined integration: The 3-Pole design supports balanced protection across all phases, simplifying wiring and coordination with downstream equipment.
• Durable molded-case construction: Engineered for robust insulation and long-term performance in distribution panels and control centers.
• OEM-friendly and compatible within Siemens ecosystems: A practical choice for new installations and as a direct replacement part in existing Siemens-powered systems.

Practical use cases and benefits

Pair the QR23B225L with panelboards and motor control centers where motors, pumps, conveyors, or compressors require clear, fast protection from overcurrent and short-circuit scenarios. In a control panel, it provides centralized protection for multiple downstream loads, helping you segment circuits and simplify maintenance. For OEM applications, its standardized MCCB design supports consistent performance across multiple units and installations, improving uptime and serviceability.

Technical snapshot

• Current rating: 225 A
• Poles: 3-Pole
• Breaker type: Molded Case Circuit Breaker
• Ideal for: Industrial, commercial, and OEM distribution panels, motor control centers, and control enclosures