Siemens 5SX2102-7 2A 1-Pole 400 V Circuit Breaker Potential Transformer

The Siemens 5SX2102-7 is a purpose-built single-pole circuit breaker with integrated potential transformer capabilities, designed to deliver reliable overcurrent protection while enabling precise voltage and current sensing in one compact package. Engineered for industrial control panels, switchgear, and energy monitoring points, this device brings protection and measurement together where you need them most.

• Part number: 5SX2102-7
• Current rating: 2 A
• Poles: 1
• Voltage rating: 400 V
• Product type: Circuit Breaker with Potential Transformer
• Key benefit: Integrated protection and metering capability reduces wiring, simplifies panel layouts, and supports accurate relay and metering inputs.

For use cases, the 5SX2102-7 excels in single-phase feeder protection where accurate measurement feeds protection relays and energy meters. It’s an ideal fit for control cabinets, machine panels, and small-to-medium switchgear setups where space is at a premium and clear, reliable current sensing is essential. With its 400 V rating, it’s suited to many commercial and light industrial distribution applications, helping you monitor load conditions while ensuring rapid isolation on fault events. This device shines when you want to streamline installation. By pairing protection with a bundled potential transformer, you reduce the number of separate components, wiring runs, and potential connection errors. It’s particularly valuable in energy management systems, where consistent, low-burden sensing feeds accurate data to meters and protective relays without cluttering the cabinet. Who benefits most? Electrical engineers and panel builders designing compact, reliable protection and measurement solutions in industrial environments, maintenance teams upgrading control panels, and systems engineers integrating metering into existing protection schemes. If you’re evaluating options for single-pole protection with measurement capabilities, the Siemens 5SX2102-7 offers a concrete, purpose-built solution that aligns with Siemens’ quality standards and integrates smoothly into Siemens protection and metering ecosystems. In short, the 5SX2102-7 is more than a breaker—it’s a targeted protection-and-sensing solution for single-phase circuits that demand accurate measurement, simplified wiring, and dependable performance in industrial settings.