5SY4363-7

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The Siemens 5SY4363-7 is a robust miniature circuit breaker designed to provide reliable overcurrent protection in a variety of applications. Engineered for use in commercial and industrial environments, this three-pole breaker is rated for 400 V ac and can handle a short-circuit breaking capacity of 10 kA, ensuring a high level of safety and performance. With a current rating of 63 A, it is well-suited for systems with higher power demands.

The compact dimensions of 54 x 76 x 90 mm make it an excellent choice for installations where space is at a premium, without compromising on protection capabilities. The device features a toggle switch for easy operation and a quick assembly system for efficient installation. It is designed to be sealable, halogen-free, and silicon-free, meeting stringent environmental standards and ensuring it is a sustainable choice for modern electrical setups.

The 5SY4363-7 is characterised by its C tripping curve, making it ideal for protecting circuits with moderate inrush currents, such as lighting circuits and general power distribution. Its mechanical and electrical endurance is tested rigorously to provide a reliable solution that maintains circuit integrity under challenging conditions.

This miniature circuit breaker is a testament to Siemens' commitment to quality, safety, and innovation, offering a dependable solution for protecting electrical circuits against overload and short-circuit conditions.
Specification Description
Part Number 5SY4363-7
Alternative Part Number 5SY43637
Manufacturer Siemens
Type Miniature Circuit Breaker
Operation Mechanism Toggle
Number of Poles 3 Poles
Voltage Rating 400 V ac
Interrupt Rating 10 kA
Current Rating 63 A
Dimensions 54 x 76 x 90 mm
Pollution Degree 3
Ambient Temperature Range -25 … +55 °C (operating), -40 … +75 °C (storage)
Mounting Position Any
Mechanical Operating Cycles Typical 20,000 cycles
Overvoltage Category 3
Touch Protection Yes
Shock Resistance 150m/s² at 11ms half-sine (according to IEC 60068-2-27)
Insulation Voltage Rated value 440 V ac (with multi-phase operation)
Wire Connection Solid: 0.75 … 35 mm², Stranded: 0.75 … 35 mm², Finely stranded with wire end processing: 0.75 … 25 mm²
Terminal Type Combined terminal top and bottom
Tightening Torque 2.5 … 3 N·m (screw-type terminals), 22 … 26 lbf·in (screw connection)
Product Features Sealable, silicon-free, halogen-free
Environmental Testing 6 test cycles (in accordance with IEC 60068-2-30)
Designation According to DIN EN 61346-2 F
Commodity Code 853620

What type of device is this?

This is a miniature circuit breaker designed to protect electrical circuits from damage caused by overcurrent or short circuit.

What are the electrical specifications of this circuit breaker?

The circuit breaker is rated for 400 V ac with a 10 kA interrupting capacity and a 63 A current rating.

How many poles does this circuit breaker have?

It is a 3-pole circuit breaker, suitable for three-phase applications.

Can this circuit breaker be used as a main switch in accordance with EN 60204-1?

Yes, this product has properties that make it 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 -25°C to +55°C.

Is this circuit breaker sealable?

Yes, the circuit breaker features a sealable design for added security.

What is the degree of pollution for this circuit breaker?

The circuit breaker has a degree of pollution rating of 3.

What is the insulation voltage rating for this circuit breaker?

The insulation voltage rating with multi-phase operation and AC is 440 V.

Is the circuit breaker halogen-free?

Yes, it is halogen-free, making it suitable for environments where avoiding halogenated compounds is important.

What is the mechanical operating life of this circuit breaker?

The mechanical operating life of the circuit breaker is typically 20,000 cycles.

What type of terminals does this circuit breaker have?

It comes with combined terminals at both the top and bottom for flexible installation options.

What is the tightening torque for the screw-type terminals?

The tightening torque for the screw-type terminals is between 2.5 and 3 N·m.

Does this circuit breaker provide touch protection?

Yes, it is equipped with touch-protection features to enhance safety during use.

What is the resistance against shock for this circuit breaker?

The circuit breaker can withstand shocks according to IEC 60068-2-27 with a resistance of 150m/s² at an 11ms half-sine.

  • Protection of electrical circuits against overload and short-circuit in residential and commercial buildings
  • Use in distribution boards for safeguarding lighting and power circuits
  • Integration into control panels for industrial equipment and machinery
  • Application in infrastructure projects, such as energy distribution systems
  • Installation in HVAC systems for safeguarding against electrical faults
  • Utilisation in renewable energy systems, including solar power installations
  • Implementation in manufacturing facilities to protect motors and drives
  • Deployment in data centres to ensure uninterrupted power supply to critical IT equipment
  • Use in marine applications where circuit protection is required
  • Installation in agricultural facilities to protect electrical equipment from overcurrents

This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.

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