OVERVIEW

Official designation: SIEMENS 3RV1021-4AA10 (SIRIUS, Motor Protection Circuit Breaker)

Role/Application: Three-pole circuit breaker size S0 for motor protection against short circuits, overloads, and phase failures in industrial power systems up to 7.5 kW.

KEY SPECS SUMMARY

Power: Operating voltage up to 690 V

Interfaces / Ports: Screw type terminals

Indicators: Visible trip indication

Operating Temp: Minus 20 degrees C to 60 degrees C

Platform / Compatibility: DIN rail 35 mm mounting

Limit: Adjustable trip range 11 to 16 A

Lifecycle: Phased-out, successor is 3RV2021-4AA10

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the short-circuit breaking capacity at 400 V AC for this device?

A: The maximum short-circuit current breaking capacity (Icu) at 400 V AC is 50 kA.

Wiring & Installation:

Q: What type of overload protection and short circuit release is integrated in the breaker?

A: The overcurrent and short circuit release mechanism is thermomagnetic.

Troubleshooting & Compatibility:

Q: Does the motor protection circuit breaker include auxiliary contacts as a standard feature?

A: The product extension for an auxiliary switch is available but must be added optionally.

Replacement & Upgrades:

Q: What is the preferred successor model for the 3RV1021-4AA10 and its product designation?

A: The preferred successor type is SIRIUS 3RV2021-4AA10, requiring review for differences.