3RU2136-4QB1
The Siemens SIRIUS 3RU2136-4QB1 is an S2-size thermal overload relay with a current range of 47 to 57 A. Its stand-alone design eliminates the need for direct contactor mounting, making it suitable for control panel layouts with separate wiring.
Product Positioning
The Siemens SIRIUS 3RU2136-4QB1 is an S2-size thermal overload relay with a current adjustment range of 47 to 57A. It features a stand-alone installation design and can be flexibly configured next to the contactor to suit the control panel layout.
Core Product Advantages and Features
47-57A current range
It covers the rated current protection requirements of mid-range power three-phase motors.
Individual installation of elastic
No contactor needs to be directly mounted; the installation position can be flexibly configured according to the space available on the control panel.
Screw terminal design
Both the main circuit and the auxiliary circuit use screw terminals, and the wiring construction method is the same.
Overload and phase loss dual protection
Simultaneously detects overload current and phase loss status, comprehensively protecting the motor's operational safety.
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3RU2136-4RB0
The Siemens SIRIUS 3RU2136-4RB0 is an S2-size thermal overload relay with a current range of 70 to 80 A, the highest current rating in its series. It can be directly connected to the 3RT203 series contactor and features manual/automatic reset switching.
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3RU2136-4QB0
The Siemens SIRIUS 3RU2136-4QB0 is an S2-size thermal overload relay with a current range of 47 to 57 A. It can be directly connected to the 3RT203 series contactor. Both the main and auxiliary circuits use screw terminals and comply with IEC motor protection standards.
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3RU2136-4KB0
The Siemens SIRIUS 3RU2136-4KB0 is an S2-size thermal overload relay with a current range of 62 to 73 A. It can be directly connected to the 3RT203 series contactor, meets Class 10 tripping rating, and is suitable for high-power three-phase motors.