✅ ABB Emax E4.2 Fixed Part – 4000A or Version V – 3P – Withdrawable HR/HR – (Part No.: 1SDA073915R1) The ABB 1SDA073915R1 is a fixed part assembly for the Emax E4.2 3-pole air circuit breaker series. It is rated for a continuous current of 4000A and is also compatible with Version V configurations, offering flexibility in installation. Designed for withdrawable breaker applications, it features HR/HR (High-Reliability) terminals that ensure secure mechanical and electrical contact. Ideal for use in high-demand power systems such as industrial plants, substations, and utility panels, this base allows safe, fast breaker insertion and removal while maintaining consistent operational integrity. Technical Specifications: Part Number: 1SDA073915R1 Model: E4.2 W FP Rated Current (Iu): 4000A or Version V Poles: 3P Version: HR/HR – High-Reliability Contact Set Compatibility: ABB Emax E4.2 withdrawable circuit breakers Mounting: Fixed base, panel-mounted Application: Power systems requiring high-current switching, modular breaker bays