3RU2126-4EB0

The Siemens SIRIUS 3RU2126-4EB0 thermal overload relay features an S0 frame, a current adjustment range of 27 to 32 amps, screw terminals for direct mounting to the contactor, and built-in 1NO+1NC auxiliary contacts, providing protection for approximately 15 kW three-phase motors.

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Siemens SIRIUS 3RU2126-4EB0 Thermal Overload Relay 27-32A

Product Positioning

The Siemens SIRIUS 3RU2126-4EB0 has a current adjustment range of 27 to 32 amps, screw terminals, and direct mounting on the front of the S0 frame contactor, providing overload protection for approximately 15 kW three-phase motors.

Core Product Advantages and Features

Contactor directly mounted on the front

It can be integrated with the corresponding S0 frame contactor, saving the time and effort of additional adapters and wiring.

27-32A Adjustable Range

The knob setting can be finely adjusted between 27 and 32 amps to match the actual full-load current value of the motor.

Class 10 breakout curve

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

IP20 protection rating

The terminal section has basic electric shock protection and is suitable for installation in general control panel environments.

project	Specification
Current adjustment range	27...32 A
Frame size	S0
Break away from level	Class 10
Motor power (400V reference)	15 kW
Auxiliary contact	1 NO + 1 NC
Terminal type	Screw terminals/contactors directly mounted

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3RU2126-4DB1

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3RU2126-4DB0

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