3RU2146-4JB0
The Siemens SIRIUS 3RU2146-4JB0 thermal overload relay has an adjustable current of 45...63 A, is S3 size, and can be directly mounted on the corresponding contactor. It features Class 10 operating characteristics and 1 NO + 1 NC auxiliary contacts, and supports manual/automatic reset.
Product Positioning
The 3RU2146-4JB0 is a Siemens SIRIUS S3 size thermal overload relay with a current adjustment range of 45...63 A. It adopts Class 10 operating characteristics and is a direct-mount contactor type, which can be directly assembled onto a corresponding SIRIUS S3 size contactor, allowing for quick installation and eliminating the need for additional wiring.
Core Product Advantages and Features
The adjustable current range is clearly defined.
The operating current value can be adjusted within the range of 45...63 A according to the motor's rated current, providing precise overload protection.
Class 10 Action Level
It meets Class 10 tripping characteristics and can quickly act to protect the motor and circuit under overcurrent conditions.
Manual/Automatic Reset Switch
The panel has a manual and automatic reset switching function, which can be flexibly set according to on-site maintenance needs.
Contactor direct mounting design
This model is a direct-mount contactor type, which can be directly snapped onto the corresponding S3 size contactor, eliminating the need for additional wiring.
1NO+1NC auxiliary contact
It has a built-in 1 normally open + 1 normally closed auxiliary contact, which can be used as a trip signal report or interlock control.
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3RU2146-4KB0
The Siemens SIRIUS 3RU2146-4KB0 thermal overload relay has an adjustable current of 57...75 A, is S3 size, and can be directly snapped onto the corresponding contactor. It features Class 10 operating characteristics and 1NO+1NC auxiliary contacts, and supports manual/automatic reset.
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3RU2146-4HB0
The Siemens SIRIUS 3RU2146-4HB0 thermal overload relay is an adjustable current relay (36...50 A), S3 size, and can be directly mounted on a corresponding contactor. It features Class 10 operating characteristics and 1 NO + 1 NC auxiliary contacts, and supports manual/automatic reset.
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3RU2146-4FB1
This product is a Siemens SIRIUS 3RU2146 series S3 size thermal overload relay with a current adjustment range of 28 to 40A. It conforms to IEC standard Class 10 tripping characteristics and has one set of normally open and one set of normally closed auxiliary contacts. It can be installed and used independently of a contactor.