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Siemens 5SY4203-7

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Marvo Stock ID MV-7R0E

HS Code 85362010

SKU 5SY4203-7

Warranty 12 months

Weight (kg) 1.00

Length (mm) 210.00

Width (mm) 170.00

Height (mm) 60.00

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Specification & Description

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Specification & Description

Specification	Description
Part Number	5SY4203-7
Alternative Part Number	5SY42037
Manufacturer	Siemens
Product Type	Miniature Circuit Breaker
Rated Voltage	400 V
Interrupt Rate	10 kA
Dimensions	90 x 36 x 76 mm
Number of Poles	2-pole
Tripping Characteristic	Type C
Rated Current	3 A
Installation Depth	70 mm
Mounting	Quick assembly system
Mounting Position	Any
Environmental Conditions	Operable in diverse environmental conditions with temperature influence resistance
Mechanical Operating Cycles	Typically 20,000
Insulation Voltage	Rated at 440 V for multi-phase operation with AC
Connectable Conductor	Solid/stranded: 0.75 - 35 mm², Finely stranded with core end processing: 0.75 - 25 mm²
Tightening Torque	2.5 - 3.5 N·m (22 - 31 lbf·in)
Product Features	Halogen-free, silicon-free, and sealable
Compliance	Complies with IEC/EN 60898-1, IEC/EN 60947-2 / UL1077 standards
Vibration Resistance	In accordance with IEC 60068-2-6
Ambient Operating Temperature	-40 °C to +70 °C
Ambient Storage Temperature	-40 °C to +75 °C
Pollution Degree	3
Overvoltage Category	3
Product Approvals	General Product Approval, EMC Declaration of Conformity, and various international certifications

The Siemens 5SY4203-7 is a robust miniature circuit breaker designed to provide reliable overcurrent protection in a variety of applications. Engineered for performance, this 400 V, 2-pole circuit breaker is capable of interrupting short-circuit currents up to 10 kA, ensuring the safety and integrity of electrical systems. With a compact form factor measuring 90 x 36 x 76 mm and an installation depth of 70 mm, it is an ideal solution for space-constrained environments.

This circuit breaker features a C tripping characteristic, which allows it to handle transient current spikes without tripping unnecessarily, making it suitable for applications with moderate inrush currents such as small motors and lighting circuits. The 3 A current rating of this device makes it well-suited for protecting circuits with lower current demands.

The 5SY4203-7 is designed with user convenience in mind, featuring a quick assembly system for ease of installation and maintenance. It is also characterised by its versatility, being suitable for use in any mounting position. The device is halogen-free and silicon-free, minimising environmental impact and ensuring compliance with stringent industry standards.

With its combination of compact size, reliable protection, and ease of use, the Siemens 5SY4203-7 miniature circuit breaker is a dependable choice for electrical protection in industrial, commercial, and residential settings.

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.

What payment methods do you accept?

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.

Is Marvo a credible parts supplier?

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.

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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Lightning-Fast Express Shipping: Receive your order in record time with our express shipping options, ensuring you minimize downtime and keep your projects on track.

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Frequently Asked Questions

What type of circuit breaker is this?

This is a miniature circuit breaker designed for quick assembly with a C tripping characteristic, suitable for AC/DC applications.

What are the voltage specifications for this circuit breaker?

The circuit breaker is rated for a supply voltage of 400V for AC, with multi-phase operation also at a rated value of 400V.

What is the interrupt rate of this circuit breaker?

The interrupt rate, or breaking capacity, for AC according to EN 60898 is 10 kA, and for DC in accordance with IEC 60947-2, it is 15 kA.

Can this circuit breaker be mounted in any position?

Yes, the circuit breaker is designed to be mounted in any position, providing flexibility in installation.

What is the rated current for this circuit breaker?

The rated current for this circuit breaker is 3A.

What are the dimensions of this circuit breaker?

The dimensions are 90 mm in height, 36 mm in width, and 76 mm in depth, with a mounting depth of 70 mm.

What is the tripping characteristic of this circuit breaker?

It has a C tripping characteristic, which means it is designed to trip at a current rating of 5 to 10 times its rated current, making it suitable for higher inrush currents typically found in inductive and motor loads.

Is this circuit breaker suitable for both residential and commercial applications?

Yes, with its C tripping characteristic and a breaking capacity of 10 kA, it is suitable for a variety of applications in both residential and commercial settings.

What is the significance of the 'C' in the tripping characteristic?

The 'C' in the tripping characteristic indicates that the circuit breaker is designed to withstand sudden high inrush currents, such as those caused by motor starts or inductive loads, without tripping unnecessarily.

How does the quick assembly system benefit installation?

The quick assembly system allows for faster and more efficient installation, reducing downtime and simplifying maintenance procedures.

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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