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Siemens 3RU1136-4HB1 SIRIUS Thermal Overload Relay - 40-50A

Siemens 3RU1136-4HB1 Thermal Overload Relay (40-50A)

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ManufacturerSiemens

Part number3RU1136-4HB1

Adjustable Current Range 40-50A

Trip Class 10

Size S2

Mounting Stand-alone Installation

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CAGE: 9NK75

High-Capacity Motor Protection Adjustable Current Range Class 10 Tripping Manual/Automatic Reset Phase Failure Sensitivity Stand-alone Installation

Product description

The Siemens 3RU1136-4HB1 is a high-capacity thermal overload relay providing robust protection for large industrial motors. It features an adjustable current range of 40 to 50 Amps and a Class 10 tripping characteristic for reliable motor safeguarding.

This relay is designed for demanding applications in sectors such as heavy industry, power generation, and large-scale infrastructure projects. Its stand-alone installation capability and phase failure sensitivity ensure operational reliability in challenging environments.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, is your trusted source for the Siemens 3RU1136-4HB1 overload relay. We offer competitive pricing and fast, reliable shipping.

Technical specifications

Adjustable Current Range	40-50A
Trip Class	10
Size	S2
Mounting	Stand-alone Installation
Terminals	Screw
Auxiliary Contacts	1 NO, 1 NC
Voltage	690 VAC
Phase Failure Sensitivity	Yes
Reset	Manual/Automatic

Common applications

Heavy Industry

Power Generation

Large-Scale Infrastructure

Industrial Automation

Mining Equipment

Steel Mills

Compatible systems

Compatible with Siemens motor control systems requiring 40-50A protection.

Also known as

Siemens SIRIUS 3RU11 3RU11364HB1 Siemens Motor Protection Relay

Replaces / compatible with

This part is a phased-out product. The preferred successor type is 3RU2136-4HB1.

Technical note

Expert tip

This relay is suitable for stand-alone installations, offering greater flexibility in panel design and wiring compared to contactor-mounted units.

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Frequently asked questions

Can the Siemens 3RU1136-4HB1 overload relay be installed independently of a contactor?

Yes, the Siemens 3RU1136-4HB1 is designed for stand-alone installation, offering flexibility in mounting configurations.