Siemens 3RB2056-1FW2 Overload Relay

Siemens 3RB2056-1FW2 Sirius solid-state overload relay provides motor overload protection for 50–200 A circuits, designed to mount on Size S6 contactors or operate as a stand‑alone device in motor control panels. The main current path uses a straight‑through transformer for sensing, while the auxiliary circuit is wired through screw terminals for reliable control wiring and easy field connections. It offers manual or automatic reset, enabling fault clearance on demand or automatic restart once the fault condition has been cleared. For signaling and interlock within a control scheme, the relay includes one normally open and one normally closed auxiliary contact (Form A/Form B). With a Class 10E trip rating and compatibility with the 3RB2 family, this relay integrates cleanly into Siemens protection schemes and provides consistent, code-compliant motor protection across standard industrial applications.