Siemens Sirius H3RV1742 3 Pole 480VAC@65KA 600Y@20KA Motor Circuit Breaker

The Siemens Sirius 3RV2 H3RV1742 is a 3-pole motor starter protector designed for switching and protecting three-phase motors. Let’s break down the details:

1. Voltage Rating: It operates at 480 VAC.
2. Current Ratings:
   • For load feeders, it’s optimized for motors up to 55 kW (45 kW at 400 V AC).
   • For other loads, it can handle rated currents of up to 100 A.
3. Breaking Capacity:
   • Short-Circuit Breaking Capacity: 65 kA
   • Overload Breaking Capacity: 20 kA
4. Purpose:
   • The 3RV2 motor starter protectors/circuit breakers are compact and current limiting.
   • They provide ideal protection for motors and other loads.
   • In case of failure, they quickly disconnect the equipment from the supply, preventing expensive damage