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Siemens 3RU2126-1EB0 Thermal Overload Relay - 2.8-4.0A

Siemens 3RU2126-1EB0 Thermal Overload Relay

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ManufacturerSiemens

Part number3RU2126-1EB0

Adjustable current range 2.8-4.0A

Trip Class 10

Size S0

Mounting Contactor mounting

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Thermal overload protection Phase loss sensitivity Manual/Automatic reset Direct mounting on S0 contactors Screw terminals Class 10 trip class

Product description

The Siemens 3RU2126-1EB0 is a thermal overload relay within the SIRIUS 3RU2 family, offering robust motor protection. It features an adjustable current range of 2.8-4.0A and a Class 10 trip rating, providing essential safeguards against overloads and phase failures. Designed for direct mounting onto Size S0 Siemens contactors, this relay utilizes screw terminals for both main and auxiliary circuits. It supports manual or automatic reset options, allowing for flexible integration into diverse industrial control systems.

This overload relay is commonly applied in industrial settings such as manufacturing automation, pump control, and HVAC systems, where reliable motor protection is paramount. Its phase loss sensitivity and dependable operation contribute to extended equipment life and operational efficiency.

Stanlo Automation, a veteran-owned supplier of industrial automation parts, offers the Siemens 3RU2126-1EB0. We ensure quality products, competitive pricing, and prompt delivery to support your operational needs.

Technical specifications

Adjustable current range	2.8-4.0A
Trip Class	10
Size	S0
Mounting	Contactor mounting
Main circuit connection	Screw
Auxiliary circuit connection	Screw
Reset function	Manual/Automatic
Poles	3
Rated operational voltage	690V AC

Common applications

Industrial automation

Pump control

HVAC systems

Conveyor systems

Machine tools

Manufacturing equipment

Compatible systems

Compatible with Siemens 3RT2 size S0 contactors (e.g., 3RT2023, 3RT2024, 3RT2025, 3RT2026, 3RT2027, 3RT2028).

Also known as

Siemens 3RU2126-1EB0 3RU21261EB0 SIRIUS 3RU2 overload relay

Replaces / compatible with

This relay is part of the Siemens SIRIUS 3RU2 series and is designed for direct mounting onto Siemens 3RT2 size S0 contactors. For older 3RU1126 overloads, a separate mounting bracket or contactor replacement may be needed.

Technical note

Expert tip

The relay offers a TEST function for verifying correct operation and a STOP function for immediate shutdown, enhancing safety and maintenance procedures.

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Frequently asked questions

What is the trip class of the Siemens 3RU2126-1EB0 overload relay?

The Siemens 3RU2126-1EB0 overload relay has a Trip Class of 10. This means it is designed to trip within 10 seconds or less under specific overload conditions, providing fast and effective motor protection.