Fuse cut-out with striker VVC3 12kV/16A 442 004230508

Medium Voltage VV Fuse Links – Reliable Installation Protection

VV series fuse links are a proven protection element in medium voltage circuits. Designed to protect electrical and power equipment such as cables, transformers, motors, and capacitor banks, against the effects of short circuits and overloads. The construction of the fuse links ensures a quick and effective response to irregularities in the circuit, minimizing the risk of damage and downtime.

Choosing the right fuse link depends on the specifics of the installation and the requirements for protection. The offer includes variants with different striker forces (50N or 80N) and with a thermal trigger (VVT-D3), which additionally protects against overheating. It is worth remembering that thermal triggers react to the temperature increase of the fuse link body, which is particularly important in SF6 switchgear.

Characteristics and application

VVC3 12kV/16A 442 fuse link is an element designed for operation in alternating current (AC) circuits with a rated voltage of 6/12 kV and a frequency of 50/60 Hz. The breaking capacity of 63 kA guarantees effective short-circuit interruption even at high currents. The striker force is 50 N, which provides a clear indication of the fuse link operation and the activation of the fuse disconnectors.

These types of fuse links are used in:

• Medium voltage switchgear

• Transformer stations

• Protection of motors and generators

• Protection of cable and overhead lines

• Industrial and power installations

Key features and benefits

• High reliability: confirmed by technical reports from type tests conducted by KEMA Labs.

• Effective protection: breaking capacity of 63 kA ensures fast short-circuit interruption.

• Durable construction: high-strength ceramic tube and galvanically protected contacts ensure long life.

• Easy replacement: improved contact cap facilitates mounting and disassembly of the fuse link.

• Silver fuse element: guarantees stable operating parameters and high precision.

• Wide range of applications: possibility of adaptation to various types of medium voltage installations.

• Cold resistance: a value of 70 mΩ affects the power loss at the level of 23 W at the rated current.

• Pre-arcing integral I²t min: a value of 320 A²s indicates the energy needed to start melting the fuse element.

• Switching integral I²t max: a value of 5200 A²s determines the total energy required to interrupt the short-circuit current.