3RU2136-4DB0
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.
Product Positioning
The 3RU2136-4DB0 is a Siemens SIRIUS 3RU2 series S2 size thermal overload relay with a current adjustment range of 18...25A. It can be directly mounted on a 3RT20 series contactor for overload and phase loss protection of three-phase motors.
Core Product Advantages and Features
Adjustable current 18...25A
Suitable for three-phase motors with a full-load current between 18 and 25 amps; the trip current can be set according to the actual load.
Contactor direct mounting design
It can be directly snapped onto the 3RT20 series S2 contactor, eliminating the need for additional wiring and saving installation space.
Class 10 Escape Feature
Compliant with IEC Class 10 overload trip curves, balancing startup and protection requirements.
1NO+1NC auxiliary contact
Provides a trip signal feedback contact, which can be linked to the control circuit to display the status.
Maximum main circuit wire
The main circuit terminals can be wired up to 50 square millimeters, accommodating wiring requirements with larger wire diameters.
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3RU2136-4DB1
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.
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3RU2136-4BB0
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.
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3RU2136-4AB0
The Siemens SIRIUS 3RU2136-4AB0 thermal overload relay features an S2 frame design, a current adjustment range of 11 to 16 amps, screw terminals for direct mounting to corresponding contactors, and Class 10 tripping characteristics suitable for three-phase motor overload protection.