3RU2136-4GB1

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.

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Siemens SIRIUS 3RU2136-4GB1 Thermal Overload Relay 36-45A Product Image

Product Positioning

The 3RU2136-4GB1 is a Siemens SIRIUS 3RU2 series S2 size thermal overload relay with a current adjustment range of 36...45A. It features an independent mounting design and is suitable for overload and phase loss protection of three-phase motors.

Core Product Advantages and Features

Adjustable current 36...45A

Suitable for three-phase motors with a full-load current between 36 and 45 amps, providing precise overload trip settings.

Independent installation type

The non-contactile direct-mount type can be fixed to the control panel alone or used with terminal blocks, offering greater configuration flexibility.

Class 10 Escape Feature

Compliant with IEC Class 10 overload protection curves, balancing motor starting characteristics and safety protection.

1NO+1NC auxiliary contact

Provides trip signal feedback, which can be linked to warning lights or control circuits.

project	Specification
Series Specifications	SIRIUS 3RU2 Second Generation Thermal Overload Relay
Applicable size	S2 (compatible with 3RT20 series contactors)
Break away from level	Class 10
Auxiliary contact	1NO+1NC
Rated operating voltage	690V AC
Protection level	IP20
Operating temperature	-40...+70°C
Current adjustment range	36...45 A
Installation method	Stand-alone installation

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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.

3RU2136-4GB0

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.

3RU2136-4FB1

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.