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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 5SY4350-7 |
| Alternative Part Number | 5SY43507 |
| Manufacturer | Siemens |
| Type | Miniature Circuit Breaker |
| Number of Poles | 3 Poles |
| Voltage Rating | 400 V ac |
| Interrupting Capacity | 10 kA |
| Current Rating | 50 A |
| Dimensions | 54 x 76 x 90 mm |
| Operating Temperature Range | -25 … +55 °C |
| Storage Temperature Range | -40 … +75 °C |
| Pollution Degree | 3 |
| Insulation Voltage | Rated at 440 V ac for multi-phase operation |
| Mechanical Operating Cycles | Typically 20,000 |
| Overvoltage Category | 3 |
| Touch Protection | Yes |
| Shock Resistance | 150m/s² at 11ms half-sine |
| Wire Connection Cross-Section | Solid: 0.75 … 35 mm², Stranded: 0.75 … 35 mm², Finely Stranded with End Processing: 0.75 … 25 mm² |
| Terminal Type | Combined terminal top and bottom |
| Tightening Torque | 2.5 … 3 N·m (22 … 26 lbf·in) |
| Product Features | Sealable, Silicon-free, Halogen-free |
| Compliance | Conforms to IEC standards and suitable for use as main switches in accordance with EN 60204-1 |
The Siemens 5SY4350-7 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 systems, with a rated AC voltage of 400 V and a rated current of 50 A. Its compact dimensions, 54 x 76 x 90 mm, allow for efficient use of space inside electrical enclosures.
Featuring a C tripping characteristic, the 5SY4350-7 ensures a precise response to overloads and short-circuit conditions, safeguarding equipment and reducing downtime. The breaker boasts a high switching capacity of 10 kA according to EN 60898 standards, and 15 kA in accordance with IEC 60947-2, highlighting its capability to handle challenging industrial environments.
The unit is designed for versatility, with a mounting position that can be adjusted to suit various installation requirements. It also offers touch protection and can be sealed for added security against unauthorised adjustments. The 5SY4350-7 is constructed to withstand a wide range of ambient temperatures, from -25°C to +55°C, ensuring consistent performance in diverse operating conditions.
This miniature circuit breaker is a testament to Siemens' commitment to quality, reliability, and innovation, making it an essential component for electrical safety and circuit management in industrial settings across the United Kingdom and beyond.
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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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.
Read more...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 type of device is this?
This is a miniature circuit breaker designed to protect an electrical circuit from damage caused by excess current resulting from an overload or short circuit.
What are the key specifications of this circuit breaker?
The key specifications include a 3-pole configuration, a 400 V ac supply voltage, a 10 kA breaking capacity, a 50 A current rating, and dimensions of 54 x 76 x 90 mm.
Can this circuit breaker be used in any mounting position?
Yes, the circuit breaker is designed to be mounted in any position, providing flexibility in installation.
What is the tripping characteristic of this circuit breaker?
This circuit breaker has a 'C' tripping characteristic, which means it is suitable for commercial and industrial applications with a moderate surge current risk.
Is the device suitable for use in environments with vibration and shock?
Yes, the circuit breaker is designed to withstand environmental conditions including vibration and shock, making it robust for industrial use.
What is the ambient temperature range for the operation of this circuit breaker?
The circuit breaker can operate within an ambient temperature range of -25 °C to +55 °C, ensuring reliable performance in various climatic conditions.
Is the circuit breaker sealable for safety purposes?
Yes, it features a sealable design which allows for locking and preventing unauthorised or accidental switching.
What is the insulation voltage rating for this circuit breaker?
The insulation voltage rating with AC is 440 V, which provides a measure of the electrical strength of the insulating materials used in the device.
Does this circuit breaker have touch-protection?
Yes, it is equipped with touch-protection to enhance safety by preventing direct contact with live parts.
How many mechanical operating cycles does the circuit breaker support?
The circuit breaker supports approximately 20,000 mechanical operating cycles, indicating its durability and longevity.
