3RU2126-4CC0

The Siemens SIRIUS 3RU2126-4CC0 thermal overload relay features an S0 frame, a current adjustment range of 17 to 22 amps, spring-loaded screwless terminals for direct mounting to the contactor, and provides overload protection for approximately 11 kW three-phase motors.

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Siemens SIRIUS 3RU2126-4CC0 Thermal Overload Relay 17-22A Spring Terminal

Product Positioning

The Siemens SIRIUS 3RU2126-4CC0 has a current adjustment range of 17 to 22 amps, uses spring terminals and is directly mounted on an S0 frame contactor, and is compatible with 400V approximately 11 kW three-phase motor protection.

Core Product Advantages and Features

Spring-loaded quick-connect terminals

Both the main circuit and the auxiliary circuit adopt a spring clip design, which can complete the wiring without screws.

17-22A current setting

The knob can be adjusted from 17 to 22 amps, corresponding to small and medium power three-phase motors.

Contactor front mounting

It can be directly assembled with the corresponding S0 frame contactor to form a complete starter unit.

Class 10 Breakthrough Level

Designed according to IEC standard thermal action curves, it takes into account both start-up tolerance and overload protection response.

project	Specification
Current adjustment range	17...22 A
Frame size	S0
Break away from level	Class 10
Motor power (400V reference)	11 kW
Terminal type	Spring-loaded terminals (screwless)
Installation method	Contactor directly mounted on the front

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3RU2126-4CB0

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