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Siemens 3RB3123-4VB0

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3RB3123-4VB0
3RB3123-4VB0

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Marvo Stock ID MV-7BQ8
HS Code 85364900
SKU 3RB3123-4VB0
Condition Used
Warranty 12 months
Weight (kg) 1.00
Length (mm) 300.00
Width (mm) 190.00
Height (mm) 150.00

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Specification & Description

Specification Description
Part Number 3RB3123-4VB0
Alternative Part Number 3RB31234VB0
Manufacturer Siemens
Product Type Overload Relay
Size S0
Number of Poles 3
Insulation Voltage Rated at 690 V with degree of pollution 3
Impulse Voltage Resistance Rated at 6 kV
Protection Class IP IP20 for terminals and front
Electrical Shock Protection Finger-safe
Overload Protection Yes
Phase Disturbance Recognition Yes
Short-Circuit to Earth Recognition Yes
Auxiliary Switch Yes
Trip Indicator Yes
Main Circuit Connection Type Screw Connection
Auxiliary Circuit Connection Type Screw Connection
Manual-Automatic-Reset Integrated Ground Fault Detection
Ambient Operating Temperature -25 to +60 °C
Relative Humidity Up to 95% during operating phase
EMC Immunity to Interference Corresponds to degree of severity 3 according to IEC 60947-1
EMC Emitted Interference CISPR 11, environment B (residential area)
Electrostatic Discharge 6 kV contact discharge / 8 kV air discharge
Operating Current at AC-3 40 A at 400 V
Auxiliary Contacts Operating Current 4 A at AC-15 at 24 V
Control Circuit/Control Type of assignment 2
Active Power Loss Total typical 3 W
Contactor Size Compatibility Can be combined with size S0 contactors

The Siemens 3RB3123-4VB0 is a state-of-the-art solid-state overload relay designed for motor protection. This component is part of the SIRIUS product family and is engineered to provide reliable protection for motors in a variety of industrial applications. With a size S0 footprint, it is compact and suitable for direct mounting, making it an ideal choice for integration into existing systems.

This overload relay offers adjustable trip classes (CLASS 5E, 10E, 20E, and 30E), allowing for precise protection settings tailored to specific motor requirements. The adjustable response current ranges from 10 to 40 A, ensuring versatility across different motor sizes and applications. The relay also features integrated auxiliary contacts, with one normally closed (NC) and one normally open (NO) contact, to facilitate straightforward status signalling.

The 3RB3123-4VB0 is designed to withstand challenging industrial environments, with an insulation voltage rated at 690 V and a surge voltage resistance of 6 kV. It is also equipped with ground fault detection, enhancing the safety and protection of your motor systems. The relay operates effectively within a wide temperature range, from -25 to +60 °C, and at installation altitudes of up to 2000 metres above sea level, ensuring consistent performance even in extreme conditions.

With its robust construction and comprehensive protective features, the Siemens 3RB3123-4VB0 overload relay is a reliable and efficient solution for safeguarding motors against overload, phase imbalance, and ground faults, contributing to the longevity and uninterrupted operation of your industrial equipment.

Commonly Asked Questions

Is my order covered by a warranty?

Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.

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We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.

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Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.

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Have steps been taken to ensure quality control?

Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.

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Frequently Asked Questions

What is the function of this overload relay?

The overload relay is designed to protect motors from overcurrent situations, ensuring safe operation by tripping the circuit when current exceeds a preset level.

Can this overload relay be used with high-efficiency motors?

Yes, it is suitable for use with high-efficiency motors and helps to reduce nuisance tripping while saving on energy costs.

What are the main features of this overload relay?

Key features include adjustable trip classes, phase disturbance recognition, short-circuit to earth recognition, and manual or automatic reset options.

How can I mount this overload relay?

The relay is designed for direct mounting and can be positioned in any orientation, providing flexibility in installation.

What type of terminals does this overload relay have?

It comes with screw-type terminals for both the main current circuit and the auxiliary and control current circuit.

Is there a specific ambient temperature range for operating this overload relay?

The relay operates effectively within an ambient temperature range of -25 to +60 degrees Celsius.

What is the insulation voltage rating for this overload relay?

The insulation voltage rating with a degree of pollution 3 is 690 V.

What is the maximum operating altitude for this overload relay?

The maximum operating altitude for the relay is 2,000 meters above sea level.

Does this overload relay have any certifications for use in hazardous locations?

Yes, it has certifications according to the ATEX directive for use in potentially explosive atmospheres.

What is the thermal current rating for this overload relay?

The thermal current rating for this relay is 40 A.

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Part conditions explained

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New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.

Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.

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