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Siemens 3RU2136-4FD0 SIRIUS Thermal Overload Relay - 28-40A

Siemens 3RU2136-4FD0 SIRIUS thermal overload relay.

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ManufacturerSiemens

Part number3RU2136-4FD0

Adjustable Current Range 28-40A

Size S2

Trip Class 10

Mounting Contactor Mounting

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Thermal overload protection Phase failure sensitivity Manual or automatic reset Direct contactor mounting Class 10 tripping Spring-type auxiliary terminals

Product description

The Siemens 3RU2136-4FD0 is a high-performance thermal overload relay engineered for essential motor protection. It offers an adjustable current range of 28 to 40 Amps and is built to the stringent Size S2 and Class 10 specifications. This model is designed for direct integration with Siemens Sirius 3RT203 size S2 contactors.

This overload relay is critical for safeguarding three-phase motors from thermal stress caused by overloads, phase unbalance, and phase failure. It finds applications in diverse sectors including industrial automation, machine building, and critical infrastructure systems. The relay provides both manual and automatic reset functionalities for user convenience and operational flexibility.

Stanlo Automation, a veteran-owned provider of industrial surplus, ensures you can source the Siemens 3RU2136-4FD0 with confidence. We offer a curated selection of high-quality automation parts, competitive pricing, and prompt service to support your maintenance and operational needs.

Technical specifications

Adjustable Current Range	28-40A
Size	S2
Trip Class	10
Mounting	Contactor Mounting
Main Circuit Connection	Screw
Auxiliary Circuit Connection	Spring-type terminal
Reset	Manual/Automatic
Rated Voltage	690V AC

Common applications

Motor Protection

Industrial Automation

Machine Control

Power Distribution

Manufacturing

Critical Infrastructure

Compatible systems

Siemens 3RT203 size S2 contactors

Also known as

Siemens 3RU2136-4FD0 Overload Relay SIRIUS 3RU2136-4FD0 Siemens Motor Starter Protection

Replaces / compatible with

This relay is designed for direct mounting on Siemens 3RT203 size S2 contactors and serves as a direct replacement for older 3RU11 series models with similar electrical specifications.

Technical note

Expert tip

This relay is an updated successor to the 3RU1136-4FD0, offering enhanced performance and compatibility within the SIRIUS line of motor control products.

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Frequently asked questions

What are the main circuit and auxiliary circuit connection types for the Siemens 3RU2136-4FD0?

The Siemens 3RU2136-4FD0 features screw terminals for its main circuit connections and spring-type terminals for its auxiliary circuit connections. This combination ensures robust electrical contact and secure mounting.