Cylindrical fuse link CH14x51 aM 20A/690V 002652031

Safety and protection of electrical installations

Cylindrical fuse link CH14x51 aM 20A/690V is an element used to protect electrical circuits against overloads and short circuits. It is a key component in ensuring reliable operation of the installation and protecting connected devices. This fuse link, thanks to its aM characteristic, is particularly recommended for protecting electric motors – it allows for short-term exceeding of the rated current, which is typical during motor start-up, without unnecessary circuit disconnection.

Characteristics and application

Cylindrical fuse links with aM characteristic (according to IEC 60269 standard) are designed to protect against the effects of short circuits in power supply circuits for motors. This means that in the event of a sudden increase in current, caused, for example, by a short circuit in the motor, the fuse link will quickly blow, interrupting the circuit and preventing more serious damage. The size of the fuse link 14x51 mm makes it compatible with a wide range of switchboards and holders. The rated voltage of 690V allows for use in installations with different voltages.

Construction and mounting

CH14x51 fuse links are made of high-quality materials – a body made of C110 or C410 porcelain provides insulation and mechanical strength, and contacts made of CuZn28 with the addition of Ag guarantee good electrical contact and low resistance. Installation is simple and intuitive – the fuse link is placed in an appropriate fuse holder, providing a stable connection and easy replacement in case of failure. It is important to choose the appropriate holder, compatible with the size of the fuse link (14x51 mm).