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Siemens 3RV2021-4BA20 | SIRIUS Motor Protection Circuit Breaker
Overview
The Siemens 3RV2021-4BA20 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 13–20 A, this breaker features a 55 kA short-circuit breaking capacity and is classified as size S0. It supports 3-pole protection and spring-type terminal connections.
Key Features
-
Current Setting Range: 13 A to 20 A
-
Rated Operational Voltage (Ue): Up to 690V AC
-
Short-Circuit Breaking Capacity: 55 kA at 400V
-
Utilization Category: AC-3
-
Poles: 3
-
Terminal Type: Spring-type 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: 3RV2021-4BA20
-
Frame Size: S0
-
Rated Service Short-Circuit Breaking Capacity (Ics): 55 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 3RV2021-4BA20?
-
Precise Motor Protection: 13–20 A range fits many 3-phase motors
-
High Fault Capacity: 55 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
Order Now
Available for global shipment.
Description
Siemens 3RV2021-4BA20 | SIRIUS Motor Protection Circuit Breaker
Overview
The Siemens 3RV2021-4BA20 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 13–20 A, this breaker features a 55 kA short-circuit breaking capacity and is classified as size S0. It supports 3-pole protection and spring-type terminal connections.
Key Features
-
Current Setting Range: 13 A to 20 A
-
Rated Operational Voltage (Ue): Up to 690V AC
-
Short-Circuit Breaking Capacity: 55 kA at 400V
-
Utilization Category: AC-3
-
Poles: 3
-
Terminal Type: Spring-type 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: 3RV2021-4BA20
-
Frame Size: S0
-
Rated Service Short-Circuit Breaking Capacity (Ics): 55 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 3RV2021-4BA20?
-
Precise Motor Protection: 13–20 A range fits many 3-phase motors
-
High Fault Capacity: 55 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
Order Now
Available for global shipment.