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• • • • • • • • • • • • • • • • • • • • • SIEMENS 3RV1042-4LB10 Motor Protection Circuit Breaker

                                          Product Overview

                                          Brand: Siemens
                                          Model: 3RV1042-4LB10
                                          Series: SIRIUS 3RV1
                                          Type: Motor Protection Circuit Breaker
                                          Frame Size: S3

                                          The 3RV1042-4LB10 is a 3-pole motor protection circuit breaker for protecting three-phase motors against overload and short circuits. It features a 70–90 A adjustable overload range and Class 20 trip characteristic.

                                          Technical Specifications

                                          Parameter	Specification
                                          Rated Current	90 A
                                          Adjustment Range	70–90 A
                                          Poles	3
                                          Trip Class	Class 20
                                          Short-Circuit Release	1170 A
                                          Rated Voltage	690 VAC
                                          Motor Power	45 kW @ 400 V
                                          Breaking Capacity	100 kA @ 400 V
                                          Protection	Thermal-magnetic
                                          Phase Failure Protection	Yes
                                          Mounting	35 mm DIN Rail
                                          Dimensions	70 × 165 × 174 mm

                                           

                                          Main Features

                                          • Thermal overload and short-circuit protection
                                          • Adjustable current setting: 70–90 A
                                          • Class 20 motor protection
                                          • Phase-failure protection
                                          • 3-pole design
                                          • DIN-rail mounting
                                          • Screw terminal connection

                                          Product Summary

                                          SIEMENS 3RV1042-4LB10 SIRIUS Motor Protection Circuit Breaker

                                          • 3-pole
                                          • 70–90 A adjustable
                                          • Class 20
                                          • 1170 A short-circuit release
                                          • 690 VAC
                                          • 45 kW @ 400 V
                                          • S3 frame size

.The structure and details of the product：

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