Description
The Siemens 5SY4540-6 is a premium MCB (Miniature Circuit Breaker) from the Sentron series, offering dependable circuit protection for a wide array of electrical applications. This high-performance device features a 40A current rating and a 1+N pole configuration, ensuring efficient protection for single-phase circuits. Its Curve B tripping characteristic is designed to respond to moderate overcurrents, making it suitable for resistive and lightly inductive loads.
Operating at 230V AC, the Siemens 5SY4540-6 boasts an impressive 10 kA breaking capacity, meaning it can safely interrupt fault currents up to this level, thereby protecting your electrical infrastructure from damage. This robust capability ensures that the MCB can handle severe short-circuit events without compromising safety or reliability. It is a critical component for preventing electrical fires and equipment failures.
This MCB is ideal for use in residential, commercial, and industrial distribution boards where reliable overcurrent and short-circuit protection is paramount. The Siemens 5SY4540-6 is designed for easy installation and integration into existing electrical systems, offering a compact and efficient solution. Its consistent performance ensures peace of mind for users.
Choose the Siemens 5SY4540-6 for a superior combination of performance, safety, and reliability in circuit protection. This MCB is a testament to Siemens’ commitment to providing high-quality electrical components for demanding environments.







