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Marvo Part ID: MV-29QF

£49.74 (ex. VAT)


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Specification Description
Part Number 5SY4306-7
Alternative Part Number 5SY43067
Manufacturer Siemens
Type Miniature Circuit Breaker
Current Rating 6 A
Number of Poles 3 Pole
Breaking Capacity 10 kA
Voltage Rating 400 V
Dimensions 76 x 54 x 90 mm
Type of Voltage AC/DC
Ambient Temperature Range -25°C to +55°C (operating), -40°C to +75°C (storage)
Insulation Voltage Rated at 440 V for multi-phase operation with AC
Conductor Cross-Section Solid: 0.75 mm² to 35 mm², Finely stranded with wire end processing: 0.75 mm² to 25 mm²
Tightening Torque 2.5 N·m to 3 N·m
Pollution Degree 3
Mechanical Operating Cycles Typically 20,000
Overvoltage Category 3
Product Features Sealable, touch-protection
Compliance Conforms to IEC standards, KC approval

Commonly Asked Questions

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 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 countries can Marvo deliver to?

Marvo currently delivers to the United Kingdom (excluding Northern Ireland), the United States of America and Germany. If you cannot find your delivery address at checkout, this is most likely because Marvo does not currently deliver to this location. There are ongoing efforts to make Marvo accessible to a global market, keep your eyes peeled as our service expands to new locations. All orders are sold with a streamlined delivery process ensuring that you get your part, fast. Marvo is designed to offer you quick, easy and reliable access to critical components and uses well established global shipping services, including but not limited to DHL, UPS and FedEx.


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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.


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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5SY4306-7 Product Description

The Siemens 5SY4306-7 is a robust miniature circuit breaker designed to provide reliable overcurrent protection in a variety of applications. Engineered for quick assembly, this three-pole breaker is suitable for both AC and DC operations, with a rated supply voltage of 400 V for AC. It features a C tripping characteristic, ensuring a precise response to overcurrent conditions, safeguarding equipment from potential damage.

With a compact form factor, the breaker measures 76 x 54 x 90 mm and can be installed in any mounting position, offering flexibility in system design. It boasts a high switching capacity current of 10 kA in accordance with EN 60898, indicating its capability to handle high fault currents, which is essential for industrial and commercial electrical systems.

The 5SY4306-7 is designed with safety in mind, featuring touch-protection and a sealable design to prevent unauthorized adjustments. It has a mechanical service life of typically 20,000 operating cycles, demonstrating its durability and reliability in demanding environments. The breaker also conforms to overvoltage category III and pollution degree 3, making it suitable for use in environments with a certain level of contamination.

This miniature circuit breaker is an essential component for electrical safety, providing both protection and peace of mind in a wide range of electrical installations.

Frequently Asked Questions

What are the key features of this miniature circuit breaker?

This Siemens miniature circuit breaker is designed with a 6 A current rating, 3 poles, and a 10 kA breaking capacity. It's suitable for quick assembly systems, can be mounted in any position, and has a tripping characteristic class of C. It's also halogen-free and offers touch-protection.

Can this circuit breaker be used in both AC and DC applications?

Yes, the circuit breaker is rated for both AC and DC applications, with a rated voltage of 400 V for AC.

What is the tripping characteristic of this circuit breaker?

The tripping characteristic of this circuit breaker is class C, which means it is designed to trip for higher surge currents typically associated with inductive or capacitive loads.

What is the significance of the breaking capacity rating?

The breaking capacity rating of 10 kA indicates the maximum fault current that the circuit breaker can safely interrupt without damage, ensuring protection against electrical faults.

Is this circuit breaker suitable for use as a main switch in accordance with EN 60204-1?

Yes, this circuit breaker has properties that make it suitable for use as a main switch in accordance with EN 60204-1.

What is the insulation voltage rating for this device?

The insulation voltage rating for this device is 440 V when used in multi-phase operation with AC.

How many mechanical operating cycles can this circuit breaker handle?

This circuit breaker is designed to handle 20,000 mechanical operating cycles as operating time, which is typical for this type of device.

What is the ambient temperature range for operating this circuit breaker?

The circuit breaker can operate within an ambient temperature range of -25°C to +55°C, and during storage, it can withstand temperatures from -40°C to +75°C.

Can the terminals of this circuit breaker accommodate different types of wires?

Yes, the combined terminals at the top and bottom can accommodate solid, multistrand, and finely stranded wires with or without wire end processing, within the specified conductor cross-section range.

Is this circuit breaker halogen-free and silicon-free?

Yes, this circuit breaker is both halogen-free and silicon-free, making it suitable for environments where these properties are required.