Siemens Overload relay for motor portection, size S00, 3.5-5A Part number 3RU2116-1FB1

Product Overview

The Siemens 3RU2116-1FB1 is a thermal overload relay designed for motor protection in the current range 3.5…5.0 A. It is suitable for size S00 applications and can be used as a stand-alone unit or mounted with corresponding SIRIUS contactors. With Class 10 tripping characteristics, screw terminals, and selectable manual or automatic reset, it provides dependable overload protection for industrial motor circuits.

Key Features

• Thermal overload relay for motor protection (Class 10)
• Adjustable current setting range: 3.5…5.0 A
• Size S00 – compatible with SIRIUS motor starter components
• Stand-alone installation or direct mounting on contactors
• Screw terminals for both main and auxiliary circuits
• Manual or automatic reset selectable
• Compact, robust industrial design

Technical Specifications

• Article Number: 3RU2116-1FB1
• Title: Overload relay 3.5...5.0 A Thermal For motor protection Size S00, Class 10 Stand-alone installation Main circuit: Screw Auxiliary circuit: Screw Manual-Automatic-Reset
• Current Range: Adjustable 3.5…5.0 A
• Trip Class: Class 10
• Size: S00
• Main Circuit Terminals: Screw
• Auxiliary Circuit Terminals: Screw
• Reset Modes: Manual / Automatic
• Rated Insulation Voltage: 690 V AC
• Surge Voltage Resistance: 6 kV
• Ambient Operating Temperature: –40 °C to +70 °C
• Dimensions (approx.): Compact S00 format
• Weight: approx. 0.158 kg

Compliance & Certifications

• Built according to Siemens SIRIUS motor-protection standards
• Meets IEC requirements for thermal motor protection

Applications

Ideal for protecting three-phase motors against overload conditions in industrial automation systems. Commonly used in motor starter panels, machinery control systems, conveyor lines, pumps, compressors, and other installations requiring reliable thermal protection in the S00 performance class.