✅ ABB External Current Sensor – 250A – XT4 – (Part No.: 1SDA066979R1) The ABB 1SDA066979R1 external current sensor is engineered to deliver reliable current measurement up to 250A for XT4 molded case circuit breakers. It acts as a key component in the breaker’s protection chain by delivering real-time current data to the Ekip trip unit. This sensor is ideal for demanding environments such as main distribution panels, large HVAC systems, heavy motor loads, and infrastructure power boards. Its compact and rugged design ensures seamless integration and long-term performance under continuous load conditions. Technical Specifications: Part Number: 1SDA066979R1 Model: External Current Sensor Rated Current: 250A Compatible Breakers: ABB XT4 Function: External current measurement with feedback to Ekip trip unit Installation Type: DIN rail/surface mount Application: High-capacity industrial power monitoring and protection