Key Features & Specifications
1. Electrical Parameters
Current Setting Range: 1.6–25 A (adjustable via rotary dial)

Trip Class: 10, 20, 30 (selectable for different start-up conditions)

Rated Operational Voltage (Ue): 690 V AC

Control Supply Voltage: 24 V AC/DC (for auxiliary circuits)

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

2. Protection & Monitoring Functions
Electronic Overload Protection: No bimetallic strips, ensuring consistent tripping accuracy

Phase Loss Detection: Immediate response to missing phases

Asymmetry Protection: Detects unbalanced currents

Self-Powered Design: No external supply needed for basic protection

Trip Memory Function: Visual LED indication (red LED for fault status)

3. Outputs & Control
Auxiliary Contacts:

1 NO (Normally Open) + 1 NC (Normally Closed)

Rated Load: 6 A / 250 V AC

Test/Reset Function: Manual test button and reset selector (auto/manual)

4. Mechanical & Compatibility
Mounting: DIN Rail (35 mm) or direct attachment to SIRIUS 3RT contactors

Terminals: Spring-loaded or screw-type (accepts 0.25–4 mm² conductors)

Compatible with:

SIRIUS 3RT/3RH contactors

SIRIUS 3RV circuit breakers

5. Standards & Certifications
IEC/EN 60947-4-1 (Motor starters)

UL 508 (Industrial control equipment)

CE, RoHS, cULus listed

Advantages Over Thermal Relays
✔ No Mechanical Wear – Solid-state design extends lifespan
✔ Adjustable Trip Class – Supports heavy or frequent starts (e.g., Class 30 for high-inertia loads)
✔ Diagnostic LEDs – Quick fault identification
✔ Space-Saving – Compact footprint for control panels

Typical Applications
Precision Motor Protection (Pumps, Fans, Conveyors)

HVAC & Compressor Systems

Packaging & Textile Machinery

Renewable Energy Systems (Wind/Solar Inverters)