✅ ABB Emax E1.2 Fixed Part – 1600A – 4-Pole – Withdrawable HR/HR Version – (Part No.: 1SDA073908R1) The ABB 1SDA073908R1 is the fixed part of the Emax E1.2 series withdrawable air circuit breaker assembly, engineered for 4-pole configurations with a continuous current rating of 1600A. Designed with HR/HR (High Reliability) interfaces on both sides, this unit ensures dependable electrical and mechanical engagement. Ideal for critical power systems, the withdrawable base allows fast maintenance or replacement of the circuit breaker without requiring system shutdown. It is DIN rail compatible and optimized for use in industrial panels and modular switchgear. Technical Specifications: Part Number: 1SDA073908R1 Model: E1.2 W FP Rated Current (Iu): 1600A Poles: 4P Version: HR/HR – High reliability on both primary and secondary Compatibility: ABB Emax E1.2 Withdrawable ACB Mounting: Panel mount / withdrawable drawer systems Application: Industrial switchgear, power distribution panels, critical load protection