Siemens Circuit breaker for motor protection, size S3, class 20, 45 - 60A Part number 3RV2042-4JB10

Product Overview

The Siemens 3RV2042-4JB10 is a SIRIUS motor-protection circuit breaker in size S3, designed for fixed installation in three-phase motor circuits. It provides thermal overload and magnetic short-circuit protection, with a current setting range of 45…63 A. Its high breaking capacity and robust construction make it suitable for demanding industrial environments.

Key Features

• Motor-protection circuit breaker, S3 frame size
• Adjustable current setting range: 45…63 A
• Thermal and magnetic release for overload and short-circuit protection
• High short-circuit breaking capacity
• Screw-terminal connections
• Designed for three-phase systems up to 690 V AC
• Suitable for fixed installation in motor control centres and panels

Technical Specifications

• Article Number: 3RV2042-4JB10
• Series: SIRIUS 3RV2 motor-protection circuit breakers
• Frame Size: S3
• Rated Current (In): 63 A
• Setting Range: 45…63 A
• Poles: 3
• Rated Operational Voltage: up to 690 V AC
• Breaking Capacity: High (dependent on supply system)
• Connection Type: Screw terminals
• Typical Dimensions: approx. 70 mm × 165 mm × 176 mm (W × H × D)

Compliance & Certifications

• Manufactured according to Siemens SIRIUS protection-device standards
• Compliant with IEC/EN motor-protection and circuit-breaker standards

Applications

Suitable for industrial three-phase motor protection in automation systems, control panels, manufacturing plants, pumps, compressors, conveyors and machinery requiring robust overload and short-circui