Cylindrical fuse link CH-22 22x58mm gG 63A 500VAC LF563G

Protection of industrial circuits and low-voltage switchgear

The cylindrical fuse link with dimensions 22x58 mm is a key element in electrical protection systems, designed for installation in fuse disconnectors and fuse bases. The device features a ceramic housing, which provides resistance to high temperatures generated during short-circuit current flow. Thanks to the use of the gG characteristic (general purpose), this element effectively protects installations against overloads and short circuits, which is essential in industrial installations, main switchgear, and when powering high-power devices.

Application and operating characteristics

This fuse is designed to operate in alternating current (AC) circuits with a rated voltage of up to 690 V, making it a universal solution for most low-voltage installations. Its main task is to protect cables and devices from the effects of short circuits and prolonged overloads. The gG characteristic signifies a general range of applications – the element reacts more slowly to short current surges, e.g., during motor starting, which prevents nuisance blowing, but quickly disconnects the circuit in the event of serious short circuits or permanent overloads. The rated current of 63 A allows for the safe passage of current at this value for a long time without degradation of protective properties, making it a typical solution for supply circuits for larger consumers or groups of sockets in industrial facilities. Additionally, the device has a short-circuit breaking capacity of up to 80 kA (in accordance with the IEC 60898-1 standard), which means it can safely interrupt the circuit even at very high short-circuit current values without being destroyed or exploding.

Energy efficiency and ceramic construction

During continuous operation under full load, the fuse link generates power losses at a level of 6.9 W at the rated current. This value is important for designers of cooling systems in tight switchgear, where the sum of losses from many elements can affect the temperature inside the control cabinet. The ceramic construction of the CH-22 model ensures mechanical and insulating stability even in difficult environmental conditions. All key technical data are strictly linked to the physical dimensions of 22 x 58 mm and the gG characteristic. The rated current is 63 A, and the maximum operating voltage reaches 690 V AC. With such large electrical parameters, power losses amount to 6.9 W, which must be taken into account when designing switchgear ventilation. The short-circuit breaking capacity at the level of 80 kA (AC) guarantees safety even in the event of a grid failure with high short-circuit power. The ceramic material not only insulates but also protects against mechanical damage during installation and operation.

Installation and compatibility

This element fits standardly into CH-22 type bases and fuse disconnectors dedicated to cylindrical fuse links with a dimension of 22x58 mm. Thanks to precise manufacturing tolerances, installation is fast and does not require additional contact processing. When replacing a damaged element, it is necessary to ensure that the new fuse has the identical time-current characteristic (gG) and the same rated current to maintain the consistency of the entire electrical installation's protection. The product is supplied in bulk packaging to facilitate logistics on construction sites or in service workshops.