Siemens Thermal Overload Relay 62–73 A, Class 10A, Size S2, Contactor Mounting – 3RU2136-4KB0

Product Description

The Siemens 3RU2136-4KB0 is a genuine SIRIUS 3RU2 Thermal Overload Relay designed to provide reliable overload and phase-failure protection for three-phase induction motors. With an adjustable current range of 62–73 A, Class 10A tripping characteristic, and Size S2 frame, this relay offers accurate thermal protection against overload conditions, helping extend motor life and improve system reliability. It is designed for direct contactor mounting with compatible Siemens S2 contactors, creating a compact and space-saving motor starter assembly. The relay features screw terminals for both the main and auxiliary circuits along with manual and automatic reset options for flexible operation and easy maintenance.

The Siemens 3RU2136-4KB0 is ideal for 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 protection accurately detects overload and phase-failure conditions, minimizing equipment damage, reducing downtime, and ensuring dependable motor performance 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, technical support, bulk order discounts, 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: 3RU2136-4KB0
• 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 Rugged 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
• Three-Phase Motor Protection

Benefits

• Protects motors against overload and phase-failure conditions
• Extends motor service life
• Minimizes unexpected downtime
• Compact contactor-mounted design saves panel space
• Easy installation and maintenance
• Accurate Class 10A thermal tripping
• Reliable performance in harsh industrial environments
• Genuine Siemens quality for long-term reliability

Frequently Asked Questions (FAQs)

Q1. What is the Siemens 3RU2136-4KB0 used for?

The Siemens 3RU2136-4KB0 is a thermal overload relay designed to protect three-phase induction motors against overload and phase-failure conditions. It is intended for direct mounting on compatible Siemens S2 contactors.

Q2. What is the adjustable current range?

This relay has an adjustable current setting from 62 A to 73 A, making it suitable for a wide range of industrial motor protection applications.

Q3. What type of mounting does this relay support?

The 3RU2136-4KB0 is designed for direct contactor mounting and features screw terminals for both the main and auxiliary circuits, ensuring secure electrical connections.

Q4. Does the relay support manual and automatic reset?

Yes. The relay includes both manual and automatic reset functions, allowing users to choose the reset mode that best suits their application.

Q5. Why buy Siemens 3RU2136-4KB0 from SB Smart Faridabad?

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