Siemens Sentron 5SY4 MCB, 2P, 2A Curve D, 440V AC, 10 kA Breaking Capacity

Miniature circuit breakers from Siemens, offer the highest quality and reliability. The excellent technical properties of the devices mean you are always on the safe side. Apart from that you benefit from the innovative mounting options which enable quick and easy installation. The miniature circuit breakers from Siemens can be combined as required with a wide range of supplementary components e.g. control current switches, fault signal contacts, shunt releases, under voltage releases, remote operating mechanisms or with RCCB units to provide protection for persons and against fire.

Automatic cut-out, 1, 2,3 and 4-pole
DIN rail assembly
For use in industry, and in the functional and residential construction sector
Supports fast and convenient removal from the assembly

IEC 60898 - Relates to Low Voltage Circuit Breakers for use in household and similar
Installations. In the UK traditionally known as miniature circuit breakers
(MCB’s).

A: Curve B: Tripping: 3 to 5 times the rated current.
Applications: protection of generators, persons, very long cables
Curve C: Tripping: 5 to 10 times the rated current
Applications: protection of circuits and general applications
Curve D: Tripping: 10 to 14 times the rated current
Applications: protection of high surge circuits, welders, transformers and motors

This miniature circuit breaker is essential for effective electrical management and protection, particularly in automation and electrical control systems where safety is crucial. Its Type D tripping characteristics make it suitable for diverse applications, ensuring vital circuit protection and durability.

• Compact design enables straightforward installation on a DIN rail
• 10kA breaking capacity provides reliable overcurrent protection
• Enhanced product longevity decreases the need for frequent replacements
• Mechanical service life rated for 10,000 cycles contributes to durability
• Halogen-free and silicon-free materials promote environmental safety

• Provides overload protection in industrial circuits
• Can be integrated into control panels for improved safety
• Ideal for automation systems that require efficient power management
• Used in switchgear assemblies to maintain circuit integrity
• Applicable in residential electrical installations for dependability

It operates with an AC rated voltage of 440V, making it adaptable for various electrical systems.

Yes, this circuit breaker can be mounted in any position, providing flexibility in installation.

At 60°C, the maximum operational current is rated at 1.7A, ensuring reliability under high-temperature conditions.

The quick assembly system allows for simple installation on standard DIN rails, enhancing usability.

It supports solid and stranded conductors from 0.75mm² to 35mm², ensuring compatibility across various applications.