Fuse link - NH2 gTr 91A/400V/63kVA - transformer fuse 004114399

Professional transformer protection in a compact form

The NH2 gTr fuse link with a rated current of 91A and a voltage of 400V AC has been specially designed for the protection of transformers against the effects of short circuits and overloads. It features a gTr characteristic, which optimizes the response time relative to the specifics of transformer loads, while simultaneously ensuring operational selectivity in distribution installations.

The NH2 size construction offers a rated AC breaking capacity of 100kA, guaranteeing effective interruption even of very large short-circuit currents. Equipped with a combined (double) indicator, it enables rapid identification of the fuse link's status—both visually and mechanically—which significantly facilitates operational inspections.

Operating parameters and electrical characteristics

The device operates at a rated voltage of 400V AC and a current of 91A, providing protection for transformers with a power up to 63kVA. Power losses Pd of 8.2W demonstrate the energy efficiency of the design—minimal thermal losses prevent unnecessary strain on the installation.

Key energy parameters include a breaking \(I^2t\) integral of 140000 A²s and a pre-arc \(I^2t\) integral of 37000 A²s. These values determine the fuse link's ability to safely interrupt various types of faults—from mild overloads to extreme arc faults.

Normative compliance and operating conditions

The fuse link meets the requirements of the VDE 0636-21 standard, confirming its compliance with European safety standards for low-voltage fuse links. The ETIM EC000055 classification "Low Voltage HRC fuse" confirms its belonging to the high-quality category of fuse links.

Logistical parameters: single units weigh 580g, the basic packaging contains 3 pieces (1.784 kg), and the transport packaging contains 15 pieces (9.268 kg). The product EAN code is 3838895815402.