Siemens 6EP1962-2BA00 SITOP PSE202U NEC CLASS 2 REDUNDANCY MODULE. SITOP PSE202U NEC Class 2 Redundancy module Input/output: 24 V DC suitable for decoupling two SITOP power supplies Output power restricted to 100 VA. It belongs to Redundancy module. Recorded manufacturer technical characteristics include Depth: 100 mm; Width: 30 mm; Height: 80 mm; Efficiency: 94.8 %; Protection class: Class III; Supply voltage DC: 24 V; Power loss (rated): 5 W; Degree of protection: IP20.