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Siemens 3RB2016-1SB0 Class 10 Solid-State Overload Relay - 3-12A

Siemens 3RB2016-1SB0 Class 10 solid-state overload relay, 3-12A.

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ManufacturerSiemens

Part number3RB1257-0KG00

Current Range 3-12 A

Class 10

Mounting Contactor Mounting (Size S00)

Main Circuit Screw Terminal

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

Product description

The Siemens 3RB2016-1SB0 is a solid-state overload relay designed for the protection of three-phase motors. It offers an adjustable current range of 3 to 12 Amps and a Class 10 tripping characteristic, providing reliable inverse-time delayed protection against overloads, phase unbalance, and phase failures.

This relay is intended for direct mounting onto Siemens 3RT1015, 3RT1016, or 3RT1017 3-pole contactors. It features both manual and automatic reset capabilities, along with a set of auxiliary contacts (1 NO + 1 NC) for signaling and control purposes. The main and auxiliary circuits utilize screw terminals for secure connections.

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Technical specifications

Current Range	3-12 A
Class	10
Mounting	Contactor Mounting (Size S00)
Main Circuit	Screw Terminal
Aux. Circuit	Screw Terminal
Reset	Manual/Automatic
Auxiliary Contacts	1 NO + 1 NC
Voltage	690 V

Common applications

Motor Control Centers

Industrial Machinery

Pump Control

HVAC Systems

Manufacturing Automation

Conveyor Systems

Compatible systems

Designed for direct mounting on Siemens 3RT1015, 3RT1016, 3RT1017 contactors (Size S00).

Also known as

Siemens 3RB2016-1SB0 Sirius Overload Relay 3-12A Overload Relay

Replaces / compatible with

This product is phased out. The preferred successor is the Siemens SIRIUS 3RB3016-1SB0.

Technical note

Expert tip

Ensure proper mating with the specified Siemens 3RT10xx series contactors (S00 size) for correct mechanical and electrical integration.

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Frequently asked questions

What is the primary function of the Siemens 3RB2016-1SB0 overload relay?

The Siemens 3RB2016-1SB0 overload relay provides inverse-time delayed protection for three-phase motors against overloads, phase unbalance, and phase failure. It helps prevent motor damage and ensures operational reliability.