Siemens QJ3M200 200A 3-Pole 240 V Circuit Breaker Potential Transformer

Meet the Siemens QJ3M200—the dependable three‑pole circuit breaker designed for demanding three‑phase power environments. With a robust 200 A current rating and a 240 V operating profile, this unit provides reliable protection for industrial panels and commercial power systems. Part Number QJ3M200, it’s built to integrate smoothly into established Siemens protection schemes and metering setups that leverage potential transformer signals, delivering protection without sacrificing performance.

Key specifications

• Current rating: 200 A
• Poles: 3
• Voltage rating: 240 V
• Part Number: QJ3M200
• Product category: Siemens circuit breaker with potential transformer compatibility

Top use cases and benefits

• Three-phase protection for industrial machinery, distribution panels, and commercial power racks
• Reliable overload and short-circuit protection in systems that rely on accurate PT-based metering and protection relays
• Consistent performance in environments where quick, decisive tripping preserves equipment and reduces downtime
• Ideal when replacing aging breakers in Siemens‑equipped panels or upgrading to a standard, compatible component with long‑term availability

What sets the Siemens QJ3M200 apart

This model embodies Siemens’ commitment to durable protection with a clear, straightforward trip mechanism and long‑standing field support. By aligning with Siemens’ ecosystem, it simplifies replacement, maintenance, and panel modernization projects. The 3‑pole design ensures balanced protection across all three phases, helping to avert uneven loading conditions and potential equipment damage. The inclusion of potential transformer compatibility means it can work cohesively with protection relays and metering systems that rely on PT signals, streamlining integration into complex power networks.

Practical installation and maintenance tips

• Verify the part number and ratings before replacement to ensure compatibility with your existing Siemens panels and protection plan
• When integrating with PT-based protection schemes, confirm alignment with your relay and metering configuration for accurate signaling
• Maintain clear labeling and documentation in your electrical panels to speed future inspections and part sourcing
• Store on-hand spares in a temperature-controlled environment to preserve performance and reliability

Designed to deliver consistent, dependable protection, the Siemens QJ3M200 200A 3-Pole 240 V Circuit Breaker—with its potential transformer compatibility—offers a practical, future‑proof solution for three‑phase systems. It’s a trusted choice for engineers and technicians who value precise protection, easy sourcing, and seamless integration within the Siemens ecosystem.