Siemens 3RV1021-1KA10

Siemens 3RV1021-1KA10 | SIRIUS Motor Protection Circuit Breaker

Overview

The Siemens 3RV1021-1KA10 is a SIRIUS series motor protection circuit breaker designed for safe and efficient protection of motors and equipment against overloads, short circuits, and phase failures. Rated for 9–12.5 A, this breaker features a 100 kA short-circuit breaking capacity and is classified as size S0. It supports 3-pole protection and screw terminal connections.

Key Features

• Current Setting Range: 9 A to 12.5 A

• Rated Operational Voltage (Ue): Up to 690V AC/DC

• Short-Circuit Breaking Capacity: 100 kA at 400V

• Utilization Category: AC-3

• Poles: 3

• Terminal Type: Screw terminals

• Size: S0

• Tripping Class: Class 10

• Mounting: Standard DIN rail or screw fixing

• Reset Function: Manual and automatic reset options

• Switching Function: Manual ON/OFF switching

• Contact Type: Fixed

Technical Specifications

• Catalog Number: 3RV1021-1KA10

• Frame Size: S0

• Rated Service Short-Circuit Breaking Capacity (Ics): 100 kA

• Operational Performance:

  • 100,000 electrical operations (AC-3)

  • 1,000,000 mechanical operations

• Trip Unit: Thermal-magnetic

• Ambient Temperature:

  • Operation: -20°C to +60°C

  • Storage: -40°C to +80°C

• Standards: IEC/EN 60947-4-1, IEC/EN 60947-2

• Protection Degree: IP20 (front), higher with enclosure

• Weight: Approx. 0.4 kg

• Country of Origin: Germany

Applications

• Motor Protection: Efficiently protects motors from overload and short circuits

• Industrial Control Panels: Compact design for tight installations

• HVAC, Pumps, Compressors: Reliable protection in commercial and industrial systems

• Machine Building and OEMs

Why Choose the 3RV1021-1KA10?

• Precise Motor Protection: 9–12.5 A range fits many 3-phase motors

• High Fault Capacity: 100 kA ensures safe operation in fault conditions

• Compact & Modular: Easy integration into control systems

• Reliable Performance: Robust construction with long operational lifespan

• Flexible Installation: Suitable for panel mounting or DIN rail

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Available for global shipment.

NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply