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Siemens 3RU1126-4CB0 SIRIUS Overload Relay — 17-22A

Siemens 3RU1126-4CB0 overload relay for motor protection.

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ManufacturerSiemens

Part number3RU1126-4CB0

Current 17-22 A

Size S0

Class 10

Reset Manual/Automatic

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Motor overload protection Adjustable current setting Class 10 tripping Manual/Automatic reset Contactor mounting

Product description

The Siemens 3RU1126-4CB0 is a Size S0 overload relay for motor protection, offering an adjustable current range of 17-22 A with a Class 10 tripping characteristic. It features screw terminals for main and auxiliary circuits and supports manual or automatic reset.

This relay is designed for direct mounting onto compatible Siemens contactors or for stand-alone installations, providing reliable protection for medium to large motors in industrial environments. It is commonly applied in manufacturing, material handling, and processing industries.

Stanlo Automation, a veteran-owned surplus parts distributor, is dedicated to supplying essential automation components. Secure your critical parts like the Siemens 3RU1126-4CB0 from our inventory to ensure the continuous operation of your machinery.

Technical specifications

Current	17-22 A
Size	S0
Class	10
Reset	Manual/Automatic
Mounting	Contactor
Terminals	Screw

Common applications

Industrial motor control

Conveyor systems

HVAC systems

Pump controls

Machine tools

Compatible systems

Siemens 3RT contactors

Also known as

3RU11264CB0 Siemens S0 overload relay 22A SIRIUS 3RU1126 motor relay

Replaces / compatible with

This phased-out product's preferred successor is the SIRIUS 3RU2126-4CB0.

Technical note

Expert tip

When mounting on a contactor, ensure the correct frame size and type are used for proper mechanical and electrical connection.

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Frequently asked questions

What is the maximum current rating for the Siemens 3RU1126-4CB0 overload relay?

The Siemens 3RU1126-4CB0 overload relay has an adjustable current range from 17 to 22 Amperes. This setting range is crucial for providing precise overload protection for motors within this capacity.