Siemens Thermal Overload Relay 415V AC

The Siemens Thermal Overload Relay for 415V AC is a device designed to provide reliable motor protection by guarding against overloads, single-phase failure, and unbalanced currents. These relays operate on the principle of inverse time-delayed tripping, meaning they trip faster under heavier overload conditions. They comply with standard trip classes, typically class 10 or class 10A, according to IEC standards.

Key features include:

• Voltage rating suitable for 415V AC systems.

• Ambient temperature compensation allowing operation within approximately -5 to +55°C.

• High impulse withstand voltage around 6kV.

• Manual or automatic reset options.

• Reliable protection against single-phase condition thanks to a unique double slide mechanism.

• Mechanical endurance with lifespan up to millions of operating cycles.

• Suitable for three-phase or single-phase motor protection.

• Auxiliary contacts to indicate tripping status and control disconnects.

• Mounting options include direct mounting on contactors or standalone installation.