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3RU5146-4MB0

The Siemens 3RU5146-4MB0 is a bimetallic thermal overload relay from the SIRIUS 3RU51 series, designed for reliable motor protection in industrial applications. It provides cost-effective overload and phase-failure protection for motors in the 40-63A current range.

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TEL：400-887-3214
Mail：jilineasyyi@outlook.com
Q Q：615739355
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Key Specifications
Electrical Characteristics

Current Range: 40-63A (adjustable)

Trip Class: Class 10A (standard motor protection)

Rated Voltage: 690V AC

Ambient Temperature: -20°C to +60°C

Protection Features

Automatic or manual reset (selectable)

Phase loss sensitivity

Ambient temperature compensation

Trip class 10A (suitable for standard motor starts)

Mechanical Design

Screw terminal connections

DIN rail mountable (35mm)

Clear trip indication (mechanical flag)

IP20 protection degree

Compatibility

Designed for use with SIRIUS 3RT contactors

Can be combined with SIRIUS 3RV circuit breakers

Standards Compliance

IEC/EN 60947-4-1

UL 508

CE, RoHS compliant

Typical Applications
Motor protection for pumps, fans, and compressors

Conveyor systems

Industrial machinery

HVAC equipment