Product Description

Siemens Thermal Overload Relay 62–73 A, Class 10A, Size S2, Contactor Mounting – 3RU2136-4KB00-8K

Product Description

The Siemens 3RU2136-4KB00-8K is a genuine SIRIUS 3RU2 Thermal Overload Relay designed to provide dependable overload and phase-failure protection for three-phase induction motors. Featuring an adjustable current range of 62–73 A, Class 10A tripping characteristic, and a Size S2 frame, this relay ensures accurate protection against overload conditions while improving motor reliability and service life. Designed for direct contactor mounting, it integrates seamlessly with compatible Siemens S2 contactors to create a compact and efficient motor starter assembly. The relay is equipped with screw terminals for both the main and auxiliary circuits and supports manual and automatic reset for flexible operation and easy maintenance.

The Siemens 3RU2136-4KB00-8K is widely used in Motor Control Centers (MCCs), industrial control panels, OEM machinery, pumps, compressors, conveyor systems, HVAC plants, water treatment facilities, and manufacturing industries. Its temperature-compensated thermal tripping mechanism accurately detects overload and phase-failure conditions, helping reduce motor damage, minimize downtime, and enhance operational efficiency 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 offer 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: 3RU2136-4KB00-8K
• Adjustable Current Range: 62–73 A
• Class 10A 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 from overload and phase-failure conditions
• Extends motor service life
• Minimizes equipment downtime
• Space-saving contactor-mounted design
• Easy installation and maintenance
• Accurate Class 10A thermal protection
• Reliable performance in demanding industrial environments
• Genuine Siemens quality for long-term operation

Frequently Asked Questions (FAQs)

Q1. What is the Siemens 3RU2136-4KB00-8K used for?

The Siemens 3RU2136-4KB00-8K is a thermal overload relay designed to protect three-phase motors from overload and phase-failure conditions. It is designed for direct mounting on compatible Siemens S2 contactors.

Q2. What is the adjustable current range?

The relay features an adjustable overload setting from 62 A to 73 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 3RU2136-4KB00-8K supports both manual and automatic reset, providing flexibility for different industrial motor control applications.

Q5. Why buy Siemens 3RU2136-4KB00-8K 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.