Siemens Thermal Overload Relay 36–45 A, Class 10, Size S2, Contactor Mounting – 3RU2136-4GB00-8K

Product Description

The Siemens 3RU2136-4GB00-8K is a genuine SIRIUS 3RU2 Thermal Overload Relay designed to provide dependable overload and phase-failure protection for three-phase induction motors. With an adjustable current range of 36–45 A, Class 10 tripping characteristic, and Size S2 frame, this relay delivers precise thermal protection to prevent motor overheating and extend equipment life. It is designed for direct contactor mounting, allowing seamless integration with compatible Siemens S2 contactors to create a compact and reliable motor starter assembly. The relay features screw terminals for both the main and auxiliary circuits and supports manual and automatic reset for convenient operation and maintenance.

The Siemens 3RU2136-4GB00-8K is ideal for Motor Control Centers (MCCs), industrial control panels, OEM machinery, pumps, compressors, conveyor systems, HVAC equipment, water treatment plants, and manufacturing industries. Its temperature-compensated thermal protection accurately detects overload and phase-failure conditions, helping reduce motor damage, minimize downtime, and improve overall system reliability in demanding industrial environments.

At SB Smart, Faridabad, we supply 100% genuine Siemens SIRIUS Thermal Overload Relays, Contactors, Motor Protection Circuit Breakers (MPCB), Soft Starters, MCCBs, MCBs, PLCs, HMIs, VFDs, and Industrial Automation Products at competitive prices. We provide GST invoices, expert technical support, bulk order pricing, secure packaging, and fast delivery across Faridabad, Delhi NCR, Mumbai, Pune, Bengaluru, Chennai, Hyderabad, Ahmedabad, Kolkata, and all major cities in India.

Key Features

• Genuine Siemens SIRIUS 3RU2 Thermal Overload Relay
• Model: 3RU2136-4GB00-8K
• Adjustable Current Range: 36–45 A
• Class 10 Tripping Characteristic
• Size S2
• Direct Contactor Mounting
• Main Circuit: Screw Terminal
• Auxiliary Circuit: Screw Terminal
• Manual and Automatic Reset
• Phase Failure Sensitive Protection
• Temperature-Compensated Operation
• Compact and Durable Industrial Design
• Long Service Life

Applications

• Motor Control Centers (MCC)
• Industrial Control Panels
• OEM Machinery
• Pumps and Compressors
• Conveyor Systems
• HVAC Systems
• Water Treatment Plants
• Manufacturing Industries
• Process Automation
• Industrial Motor Protection

Benefits

• Protects motors against overload and phase-failure conditions
• Extends motor service life
• Reduces unexpected downtime and maintenance costs
• Compact contactor-mounted design saves valuable panel space
• Quick and simple installation
• Accurate Class 10 thermal protection
• Reliable performance in demanding industrial environments
• Genuine Siemens quality for long-lasting operation

Frequently Asked Questions (FAQs)

Q1. What is the Siemens 3RU2136-4GB00-8K used for?

The Siemens 3RU2136-4GB00-8K is a thermal overload relay designed to protect three-phase motors from overload and phase-failure conditions. It is intended for direct mounting on compatible Siemens S2 contactors.

Q2. What is the adjustable current range?

The relay features an adjustable overload setting from 36 A to 45 A, making it suitable for a variety of industrial motor applications.

Q3. What type of mounting and terminals does it use?

It is designed for direct contactor mounting and includes screw terminals for both the main circuit and auxiliary circuit, ensuring secure and reliable electrical connections.

Q4. Does the relay support manual and automatic reset?

Yes. The 3RU2136-4GB00-8K supports both manual and automatic reset, allowing users to select the most suitable reset mode for their application.

Q5. Why buy Siemens 3RU2136-4GB00-8K from SB Smart Faridabad?

SB Smart, Faridabad supplies 100% genuine Siemens industrial automation products with competitive pricing, GST invoices, expert technical support, bulk order assistance, and fast delivery across India for OEMs, panel builders, contractors, and industrial customers.