Therm Overload relay 11-16A For motor protection Size S0 - 3RU2126-4AB00-8K

Product Description

Siemens SIRIUS Thermal Overload Relay – 11–16 A (Motor Protection) – 3RU2126-4AB00-8K

The Siemens 3RU2126-4AB00-8K is a SIRIUS 3RU2 series thermal overload relay designed for reliable motor protection against overload, phase failure, and excessive temperature rise. It is used in combination with SIRIUS contactors (Size S0, typically 3RT2 series) in motor starter assemblies, MCC panels, industrial automation systems, HVAC, pumps, and conveyor applications.

This relay provides an adjustable current setting range of 11–16 A, making it suitable for small to medium three-phase motors. It works on the bimetal thermal principle, where excessive current heats the bimetal strips, causing the relay to trip and disconnect the motor to prevent damage.

Key Features

• Siemens SIRIUS 3RU2 thermal overload relay
• Adjustable current range: 11–16 A
• Motor protection against overload and phase loss
• Class 10 tripping characteristic (fast motor protection)
• Compatible with S0 size contactors (3RT2 series)
• Direct mounting on contactor (compact motor starter assembly)
• Manual / automatic reset options
• High reliability and long service life
• IEC 60947-4-1 compliant