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Siemens 3RB2026-1QB0 Class 10 Solid-State Overload Relay - 6-25A

Siemens 3RB2026-1QB0 Class 10 solid-state overload relay, 6-25A.

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ManufacturerSiemens

Part number3RB2026-1PB0

Current Range 6-25 A

Class 10

Mounting Contactor Mounting (Size S0)

Main Circuit Screw Terminal

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3-Phase Motor Protection Class 10 Tripping Manual/Automatic Reset Screw Terminals Direct Contactor Mounting Phase Loss Protection

Product description

The Siemens 3RB2026-1QB0 is a solid-state overload relay engineered for the protection of three-phase motors within a 6 to 25 Amp range. It features a Class 10 tripping characteristic, providing reliable inverse-time delayed protection against thermal overloads, phase unbalance, and phase failure.

This relay is designed for direct mounting onto Siemens size S0 contactors (e.g., 3RT1023, 3RT1024, 3RT1025, 3RT1026). It offers both manual and automatic reset options and includes standard auxiliary contacts (1 NO + 1 NC) for signaling and control circuits. Screw terminals are used for main and auxiliary circuit connections.

Stanlo Automation, a veteran-owned supplier of industrial surplus, offers the Siemens 3RB2026-1QB0. We ensure that you receive quality components to maintain your operational uptime. Rely on us for your industrial automation needs.

Technical specifications

Current Range	6-25 A
Class	10
Mounting	Contactor Mounting (Size S0)
Main Circuit	Screw Terminal
Aux. Circuit	Screw Terminal
Reset	Manual/Automatic
Auxiliary Contacts	1 NO + 1 NC
Voltage	690 V

Common applications

Motor Control

Industrial Automation

Medium Motors

Pumps

Compressors

HVAC

Compatible systems

Designed for direct mounting on Siemens Size S0 contactors (e.g., 3RT1023, 3RT1024, 3RT1025, 3RT1026).

Also known as

Siemens 3RB2026-1QB0 Sirius Overload Relay 6-25A Overload Relay

Replaces / compatible with

This product is phased out. The preferred successor is the Siemens SIRIUS 3RB3026-1QB0.

Technical note

Expert tip

This relay is suitable for direct mounting on specific Siemens size S0 contactors, offering a compact and reliable motor protection solution.

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Frequently asked questions

What is the maximum current rating for the Siemens 3RB2026-1QB0 overload relay?

The Siemens 3RB2026-1QB0 overload relay has a maximum adjustable current rating of 25 Amps and a minimum of 6 Amps. It is designed with a Class 10 tripping characteristic for motor protection.