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3RU5146-4HB0

The Siemens 3RU5146-4HB0 is a bimetallic thermal overload relay from the SIRIUS 3RU51 series, designed to provide reliable motor protection in industrial applications. It offers adjustable current settings and phase loss protection for motors in the 25-40A 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: 25-40A (adjustable)

Trip Class: Class 10 (standard motor protection)

Rated Insulation Voltage: 690V AC

Ambient Temperature Range: -20°C to +60°C

Protection Features

Thermal overload protection (bimetallic trip mechanism)

Phase loss sensitivity

Ambient temperature compensation

Manual/auto reset selector

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 motor protection circuit breakers

Standards Compliance

IEC/EN 60947-4-1

UL 508

CE, RoHS compliant

Typical Applications
Motor protection for industrial pumps and fans

Compressor systems

Conveyor belt drives

HVAC equipment

Machine tool controls