Siemens Circuit breaker for motor protection, size S2, 416A Part number 3RV2031-4EA10

Product Overview

The Siemens 3RV2031-4EA10 is a motor protection circuit breaker (SIRIUS 3RV2 series, frame size S2) designed to provide overload, short-circuit and phase-loss protection — and manual disconnection — for three-phase motors and load feeders. With adjustable thermal overload release, magnetic short-circuit protection and DIN-rail mounting, it combines compact design with robust motor protection for industrial installations.

Key Features

• Motor protection circuit breaker — SIRIUS 3RV2 series, size S2
• 3-pole main contacts for three-phase motor or load switching
• Adjustable thermal overload release: 22 … 32 A
• Magnetic instantaneous short-circuit release (N-release: 416 A)
• Class 10 tripping characteristic — suitable for standard motor-start applications
• Screw-terminal connections — secure main-circuit wiring
• Standard switching capacity — suitable for motor and feeder protection
• DIN-rail mountable (35 mm) or control-cabinet panel mount — flexible installation
• Phase-loss sensitivity — protects motors against single-phase operation damage
• Compact size for space-efficient motor-starter assemblies

Technical Specifications

• Article Number: 3RV2031-4EA10
• Product Family: SIRIUS 3RV2 motor protection circuit breakers
• Poles (Main): 3
• Thermal Overload Release (A-release): 22 … 32 A (adjustable)
• Magnetic Short-Circuit Release (N-release): 416 A
• Tripping Class: CLASS 10
• Rated Insulation Voltage (Ui): 690 V
• Surge Voltage Withstand: 6 kV
• Mounting: 35 mm DIN-rail or panel mounting
• Protection / Pollution Degree: IP20 (front), Pollution Degree 3
• Adjustable Current Range for Overload: 22–32 A
• Intended Use: Motor protection, feeder protection, load circuits

Compliance & Standards

• Compliant with Siemens SIRIUS 3RV2 motor protection standards
• Designed for industrial use — meets standard requirements for motor protection, short-circuit interrupting capacity and overload handling

Applications

The 3RV2031-4EA10 is ideal for protecting three-phase motors, pumps, compressors, fans, and general industrial loads where adjustable overload protection and short-circuit defense is required. Typical use cases include motor-starter assemblies, control cabinets, machine feeders, industrial automation systems and load-feeder circuits. Its adjustable current range and compact size make it versatile for a variety of motor and load protection applications.