Relay (electric relay)

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.

The Siemens SIRIUS 3RU2136-4JD0 is an S2-size thermal overload relay with a current range of 54 to 65 A. The difference between it and the 4JB0 model with the same current value is that the auxiliary circuit uses a spring-loaded terminal design, allowing for tool-free, quick crimping of the wiring.

The Siemens SIRIUS 3RU2136-4JB1 is an S2-size thermal overload relay with a current range of 54 to 65 A. Its stand-alone design allows for independent configuration on a control panel and is suitable for distributed wiring configurations.

The Siemens SIRIUS 3RU2136-4JB0 is an S2-size thermal overload relay with a current range of 54 to 65 A. It can be directly connected to the 3RT203 series contactor, meets Class 10 tripping rating, and features manual/automatic reset switching.

The Siemens SIRIUS 3RU2136-4HB1 is an S2-size thermal overload relay with a current range of 40 to 50 A. Its stand-alone design eliminates the need for direct contactor mounting, making it suitable for control panel layouts with separate wiring.

The 3RU2136-4HB0 belongs to the SIRIUS 3RU2 thermal overload relay S2 size series. It has a current setting range of 40...50A, is installed by direct contactor mounting, and has 1 NO + 1 NC auxiliary contacts. It is suitable for overload protection applications of medium and large three-phase motors.

The 3RU2136-4GB1 belongs to the SIRIUS 3RU2 thermal overload relay S2 size series, with a current setting range of 36...45A. It is an independent installation type with 1 NO + 1 NC auxiliary contacts and can be installed separately in the control panel with a terminal block.

The 3RU2136-4GB0 belongs to the SIRIUS 3RU2 thermal overload relay S2 size series, with a current setting range of 36...45A. It adopts a direct contactor mounting method and has 1 NO + 1 NC auxiliary contacts, making it suitable for medium and large three-phase motor protection applications.

The 3RU2136-4FB1 belongs to the SIRIUS 3RU2 thermal overload relay S2 size series, with a current setting range of 28...40A. It is an independent installation type with 1 NO + 1 NC auxiliary contacts, suitable for stand-alone installation with terminal blocks.

The 3RU2136-4FB0 belongs to the SIRIUS 3RU2 thermal overload relay S2 size series, with a current setting range of 28...40A. It adopts a direct contactor mounting method and has 1 NO + 1 NC auxiliary contacts, making it suitable for medium-sized three-phase motor protection applications.

The 3RU2136-4EB1 belongs to the SIRIUS 3RU2 thermal overload relay S2 size series, with a current setting range of 22...32A. It is an independent installation type with 1 NO + 1 NC auxiliary contacts, suitable for stand-alone installation with terminal blocks.

The 3RU2136-4EB0 belongs to the SIRIUS 3RU2 thermal overload relay S2 size series, with a current setting range of 22...32A. It adopts a direct contactor mounting method and has 1 NO + 1 NC auxiliary contacts, making it suitable for medium-sized three-phase motor protection applications.

The 3RU2136-4DB1 belongs to the SIRIUS 3RU2 thermal overload relay S2 size series, with a current setting range of 18...25A. It is an independent installation type with 1 NO + 1 NC auxiliary contacts, suitable for stand-alone installation with terminal blocks.

The 3RU2136-4DB0 belongs to the SIRIUS 3RU2 thermal overload relay S2 size series, with a current setting range of 18...25A. It adopts a direct contactor mounting method and has 1 NO + 1 NC auxiliary contacts, making it suitable for small and medium-sized three-phase motor protection applications.

The 3RU2136-4BB0 belongs to the SIRIUS 3RU2 thermal overload relay S2 size series, with a current setting range of 14...20A. It adopts a direct contactor mounting method and has 1 NO + 1 NC auxiliary contacts. It is the model with the lowest current adjustable range in this series.