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Specifications
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 |
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5SY4350-7 Product Description
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.
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.