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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 5SY5203-7 |
| Manufacturer | Siemens |
| Product Type | Miniature Circuit Breaker |
| Rated Operational Voltage | 400 V AC / 440 V DC |
| Interrupt Rate | 10 kA |
| Number of Poles | 2-pole |
| Tripping Characteristic | Type C |
| Rated Current | 3 A |
| Dimensions | 90 x 36 x 76 mm |
| Protection Class | IP20 with connected conductors |
| Mechanical Life | Typically 10,000 operating cycles |
| Overvoltage Category | III |
| Pollution Degree | 3 |
| Energy Limiting Class | 3 |
| Loss Power | 1.3 W per pole at rated current in warm operating condition |
| Suitability for Use | Universal current (AC/DC) |
| Features | Halogen-free, plombierbar (sealable), silicon-free |
| Installation | Any position, with quick fastening system |
| Environmental Considerations | Vibration and shock resistant according to IEC 60068-2-6, operational temperature -40°C to 70°C |
| Weight | Approximately 318 g |
The Siemens 5SY5203-7 is a robust miniature circuit breaker designed to provide reliable overcurrent protection for electrical circuits. Engineered for both AC and DC applications, this versatile breaker is rated for a 400 V ac supply voltage and can handle a DC voltage of up to 440 V. It boasts an impressive interrupt rate of 10 kA, ensuring quick and effective disconnection in the event of a fault, which helps to safeguard both equipment and personnel.
With a compact form factor measuring 90 x 36 x 76 mm, the 5SY5203-7 is a two-pole device featuring a C tripping characteristic, making it suitable for a wide range of applications where space is at a premium but protection cannot be compromised. The device's quick assembly system facilitates easy installation, while its ability to be mounted in any position offers flexibility in system design.
The circuit breaker is designed with safety in mind, featuring touch protection to prevent accidental contact. Its halogen-free construction and the ability to seal the device contribute to its safe operation and compliance with environmental standards. The 5SY5203-7 is also silicon-free, making it suitable for use in environments where silicon could interfere with processes or equipment.
This miniature circuit breaker is an ideal choice for those seeking a reliable and efficient solution to protect against overcurrents in both commercial and industrial settings. Its universal current capability and compliance with relevant standards make it a dependable component in any electrical distribution system.
Commonly Asked Questions
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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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Read more...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.
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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 type of circuit breaker is this?
This is a miniature circuit breaker designed for universal current applications, capable of interrupting short-circuit currents up to 10kA. It is a 2-pole breaker with a C tripping characteristic.
Can this circuit breaker be used with both AC and DC power supplies?
Yes, it is suitable for both AC and DC power supplies, with a rated operational voltage of 400 V for AC and 440 V for DC.
What are the dimensions of this circuit breaker?
The dimensions are 90 mm in height, 36 mm in width, and 76 mm in depth.
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 applications with motors or similar inductive loads.
What is the installation method for this circuit breaker?
It features a quick assembly system, allowing for easy and fast installation.
What is the rated current of this circuit breaker?
The rated current for this circuit breaker is 3 A.
What is the breaking capacity of this circuit breaker?
The breaking capacity is 10 kA according to EN 60898 and 15 kA according to IEC 60947-2 when used in DC circuits.
Is this circuit breaker halogen-free?
Yes, it is halogen-free, which means it does not release halogenated gases under normal operating conditions, making it environmentally friendly and safer in the event of a fire.
Can this circuit breaker be used as a main switch according to EN 60204-1?
Yes, it has the properties suitable for use as a main switch in accordance with EN 60204-1.
What is the ambient temperature range for operating this circuit breaker?
The circuit breaker can operate within an ambient temperature range of -40 °C to +70 °C.
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.
