Siemens 6EP4437-8FB00-4CY0 SITOP SEL1600 4x10 A IOL basic module. SITOP SEL1600 4x10 A IOL basic module 4-channel input: 24 V DC/40 A output: 24 V DC/4x 10 A setting range: 0.5-10 A with IO-Link interface. It belongs to SITOP SEL1600 selectivity system with IO-Link. Recorded manufacturer technical characteristics include Efficiency: 98 %; Power loss: 10 W; Number of outputs: 4; Dimensions (WxHxD): 63 x 145 x 125 mm; IP protection class: IP20; Rated input current: 40 A; Rated input voltage: 24 V DC; IO-Link transfer rate: COM3 (230.4 kBaud).