Siemens Motor protection circuit breaker, size S0, 7 - 10A Part number 3RV2021-1JA10

Product Overview

The **Siemens Motor protection circuit breaker, size S0, 7 – 10 A**, article number **3RV2021-1JA10**, is a compact SIRIUS 3RV2 motor protection circuit breaker designed to provide reliable overload and short-circuit protection for three-phase motors. This device features an adjustable thermal overload release with a setting range of 7 – 10 A and a magnetic short-circuit release at 130 A, offering coordinated motor safeguarding and automatic circuit interruption. It is equipped with screw terminal connections and is suitable for use in industrial control panels, motor control centres, and automation systems where dependable motor protection and compact design are required.

Key Features

• Motor protection circuit breaker with adjustable overload range
• Size S0 frame for compact motor protection applications
• Adjustable thermal overload release (7 – 10 A)
• Magnetic short-circuit release at 130 A
• 3-pole design for full three-phase protection
• Screw terminal connections for secure wiring
• Standard breaking capacity for motor feeders and control circuits
• Manual ON/OFF switching and isolation function

Technical Specifications

• Article Number: 3RV2021-1JA10
• Product Family: SIRIUS 3RV2 Motor Protection Circuit Breakers
• Device Type: Motor protection circuit breaker
• Frame Size: S0
• Number of Poles: 3
• Adjustable Current Range: 7 … 10 A
• Thermal Trip Class: Class 10
• Magnetic Trip Setting: 130 A
• Connection Type: Screw terminals
• Rated Operational Voltage (Ue): up to 690 V AC
• Rated Frequency: 50/60 Hz
• Switching Capacity: Standard industrial
• Mounting: DIN rail or panel mounting
• Protection Class: IP20 when installed
• Operating Temperature Range: Standard industrial range

Compliance & Standards

• Designed in accordance with Siemens requirements for motor protection devices
• Complies with IEC and EN standards for low-voltage protective devices
• Suitable for industrial automation and control environments

Applications

The Siemens 3RV2021-1JA10 motor protection circuit breaker is used to protect three-phase motors against damage caused by overload and short circuits. Typical applications include motor feeders in control panels, motor control centres, and distributed automation systems. It is particularly suited for installations where compact size, adjustable protection, and reliable automatic switching are required.