3RU2126-4PB0

The Siemens SIRIUS 3RU2126-4PB0 thermal overload relay features an S0 frame, a current adjustment range of 30 to 36 amps, direct mounting to the contactor via screw terminals, and built-in 1NO+1NC auxiliary contacts. It is suitable for 18.5 kW three-phase motor protection.

Share To
Product Positioning

The Siemens SIRIUS 3RU2126-4PB0 is an S0 frame thermal overload relay with a current adjustment range of 30 to 36 amps. It features screw terminals and direct mounting to S0 frame contactors and is suitable for overload protection of 18.5 kW three-phase motors.

Core Product Advantages and Features
30-36A Wide Range Adjustment
The trip current can be precisely set between 30 and 36 amps, which is suitable for medium and large three-phase motor applications.
Direct mounting saves space
It can be directly installed on the front of the corresponding S0 frame contactor without the need for connectors, simplifying the panel matching process.
1NO+1NC signal output
Built-in normally open/normally closed auxiliary contacts can provide feedback tripped states for use in control circuit interlocking.
690V withstand voltage rating
With a rated insulation withstand voltage of 690V, it meets the application requirements of various voltage levels in industrial sites.
project Specification
Current adjustment range 30...36 A
Frame size S0
Break away from level Class 10
Motor power (400V reference) 18.5 kW
Auxiliary contact 1 NO + 1 NC
Terminal type Screw terminals/contactors directly mounted