The Siemens 5SV3745-6 is a 4-pole residual current operated circuit breaker (RCCB) from the RCCBs family, Type A, rated at 125 A with a 500 mA residual trip threshold and a nominal AC voltage of 400 V. The 125 A rating and 4-pole (3-phase + neutral) configuration size it for main incomer or large sub-distribution boards in commercial and industrial panels, typically on a DIN-rail mount inside a distribution enclosure.
Export control classification is AL: N / ECCN: EAR99, no special licensing required for most destinations. Packaged as a single piece (1 unit), dimensions 78 x 97 x 85 mm.
