Fuse cut-out with striker VVC3 24kV/50A 537 004250514

Medium Voltage Fuse Links – Reliable Installation Protection

VV fuse links are a proven protection element in medium voltage (MV) networks. Designed to protect cables, transformers, motors and capacitor banks from the effects of short circuits and overloads. The construction based on solid materials and precise workmanship guarantees reliable operation in demanding conditions. The VVC3 24kV/50A 537 model stands out with its high short-circuit breaking capacity, reaching 63 kA, making it a suitable choice for installations with high short-circuit currents.

Characteristics and application

VV fuse links are characterized by a fast and effective response to fault currents, minimizing the risk of damage to the installation. In the case of the VVC3 model, the lack of a thermal trigger means that it will only operate when the rated current value is exceeded. This is particularly important in applications where tripping the fuse is undesirable during short-term load surges. A striker with a force of 50N indicates the operation of the fuse link and enables the activation of the tripping mechanism of fuse disconnectors.

Rated values: AC voltage 24kV, rated current 50A and frequency 50/60Hz allow for a wide range of applications of this fuse link in various electrical installations. Cold resistance is 29 mΩ and power loss at rated current load is 110W. The minimum I²t pre-arcing integral is 5800 A²s and the maximum I²t max is as much as 44000 A²s.

Advantages for installers and users

• High reliability: Confirmed by technical reports from type tests carried out by KEMA Labs.
• Effective protection: Short-circuit breaking capacity at 63 kA level ensures safety of the installation and equipment.
• Durable construction: High-strength ceramic tube and galvanically protected contacts guarantee long life.
• Easy replacement: Improved contact cap facilitates and speeds up the fuse link replacement process.
• Precise operation: Lack of a thermal trigger ensures selective operation in the event of short-term overloads.
• Resistance to environmental conditions: Reliable sealing system protects against moisture, which increases durability and reliability.
• Silver fuse element: Provides optimal conductivity and effectiveness.