Model: 3RU2136‑4QB0 (SIRIUS 3RU2 series)
Current Range: Adjustable 47–57 A
Trip Class: Class 10 (inverse-time)
Mounting: For direct mounting on S2-size contactors
Reset Type: Manual or automatic reset
Contacts: 3‑pole main circuit with 1 NO + 1 NC auxiliary contacts
Thermal-overload design protects motors from overload, phase loss, and asymmetry
Operational voltage: Up to 690 V AC, 50/60 Hz
Power ratings: Capable up to 55 kW at 690 V (AC-3e)
Ambient Range: –40 °C to +70 °C, ambient-compensated for temperature variation
Protection Rating: IP20 front; solder/store/shock resistance per IEC standards
Physical Specs:
Weight ~0.343 kg (0.756 lb)
Dimensions approx. 55 × 90 × 105 mm
Terminations: Screw terminals for main and auxiliary circuits; supports up to 35 mm² wire