Siemens 3RV1042-4HA10 Manual Motor Starter-Protector 600V Range 36-50Amp

The 3RV1042-4HA10 is a heavy-duty manual motor starter and protector from Siemens’ SIRIUS series, designed for protecting motors and loads against overloads, short circuits, and phase failure. It is well-suited for use in industrial motor control applications.

Model: 3RV1042-4HA10
Type: Manual Motor Starter / Protector
Rated Operating Voltage: Up to 600 VAC
Current Adjustment Range: 36–50 A
Trip Class: Class 10 (standard motor protection response)
Protection Type:
Thermal for overload protection
Magnetic for short-circuit protection
Breaking Capacity: High (with appropriate upstream fuse; typically up to 100 kA at 400 V)
Poles: 3-pole
Control: Manual rotary switch with ON/OFF/TRIP positions
Auxiliary Contacts: Optional snap-on auxiliary modules
Mounting: DIN rail or panel mount
Terminal Type: Screw terminals
Reset Type: Manual
Standards & Certifications: IEC 60947-4-1, UL, CSA, CE
Application: Motor branch circuit protection, direct-on-line starters, heavy machinery
Manufacturer: Siemens AG Germany Please review pictures carefully and let us know if you have any questions!