Leroy-Somer Varistor Z500HPRL – Product Description

Overview
The Leroy-Somer Z500HPRL Varistor is a high-energy surge protection device designed for brushless alternators used in industrial generators. It shields the rotating rectifier and excitation system from harmful voltage spikes caused by sudden load changes, switching surges, or electrical faults. By clamping these transients, the Z500HPRL ensures stable alternator performance and long-term reliability.

Key Features

• Purpose-built for Leroy-Somer LSA-series alternators

• High-capacity MOV (Metal Oxide Varistor) for superior surge absorption

• Protects rotating diodes and rectifier bridges from over-voltage damage

• Rugged, heat-resistant design suitable for industrial generator environments

• Easy installation during alternator servicing or diode replacement

• Improves excitation stability and prolongs alternator lifespan