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Siemens 3RU2126-1DB0 Thermal Overload Relay - 2.2-3.2A

Siemens 3RU2126-1DB0 Thermal Overload Relay

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ManufacturerSiemens

Part number3RU2126-1DB0

Adjustable current range 2.2-3.2A

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 3RU2126-1DB0 is a thermal overload relay from the SIRIUS 3RU2 series, engineered for robust motor protection. It offers an adjustable current range of 2.2-3.2A and a Class 10 trip rating, ensuring reliable safeguarding against overcurrents and phase imbalances. This relay is designed for direct mounting onto Size S0 Siemens contactors. It features screw terminals for both main and auxiliary circuits and supports both manual and automatic reset functions, providing flexibility for various industrial applications.

Applications for the 3RU2126-1DB0 include motor control in various industrial settings such as manufacturing plants, water treatment facilities, and HVAC systems. Its phase loss sensitivity and dependable performance make it a crucial component in ensuring operational continuity and equipment longevity.

Stanlo Automation, a veteran-owned distributor, offers the Siemens 3RU2126-1DB0 with a commitment to quality and customer satisfaction. We provide competitive pricing and efficient shipping to keep your operations running smoothly.

Technical specifications

Adjustable current range	2.2-3.2A
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

Motor control centers

Pump stations

Conveyor systems

HVAC units

Industrial machinery

Manufacturing automation

Compatible systems

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

Also known as

Siemens 3RU2126-1DB0 3RU21261DB0 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 is ambient temperature compensated from -4°F to 140°F (-20°C to 60°C), ensuring consistent performance across various environmental conditions.

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Frequently asked questions

What are the main protection functions of the Siemens 3RU2126-1DB0 overload relay?

The Siemens 3RU2126-1DB0 provides thermal overload protection and features phase loss sensitivity. It is designed to protect three-phase motors against impermissibly high temperature rises due to overload or phase failure.