Key Specifications
Electrical Characteristics

Current Setting Range: 0.25-0.4A (adjustable)

Trip Class: Selectable (10/20/30)

Rated Operational Voltage: 690V AC

Control Supply Voltage: 24V AC/DC (self-powered for basic functions)

Ambient Temperature Range: -25°C to +60°C

Protection Features

Electronic overload protection (no bimetallic strips)

Phase loss detection

Current imbalance protection

Ground fault monitoring (optional with additional modules)

Automatic motor thermal modeling

Control & Monitoring

Auxiliary Contacts: 1NO + 1NC

LED Indicators: Power ON, Ready, Fault

Test/Reset: Manual test button with auto/manual reset selector

Mechanical Design

Compact DIN rail mounting (35mm)

Spring-loaded terminals (0.25-2.5mm² conductors)

IP20 protection degree

Direct coupling with SIRIUS 3RT contactors

Communication & Integration

Optional PROFIBUS/PROFINET communication (with 3RB30 module)

Compatible with Siemens SIMATIC automation systems

Standards Compliance

IEC/EN 60947-4-1

UL 508

CE, cULus, RoHS

Typical Applications
Precision motor protection in manufacturing

Pump and fan control systems

Conveyor and material handling equipment

HVAC and building automation

Renewable energy systems