Product Description
AVR 6GA2-491-1A
The Siemens 6GA2-491-1A is a high-performance analog Automatic Voltage Regulator (AVR) designed to provide precise voltage control for Siemens 1FC4 and 1FC5 series synchronous generators. This robust regulator ensures a stable and reliable voltage output under varying load conditions, protecting both the generator and connected equipment. It features under-frequency protection to safeguard the system during speed drops and is equipped for parallel operation with other generators via a quadrature droop input. As a genuine Siemens component, the 6GA2-491-1A guarantees optimal compatibility, reliability, and longevity for your power generation system.
Technical Specifications:
- Model: 6GA2 491-1A
- Type: Analog Automatic Voltage Regulator (AVR)
- Compatibility: Designed for Siemens 1FC4 & 1FC5 synchronous generators
- Sensing Voltage Input: Selectable 230V / 400V AC, 50/60 Hz
- Excitation Output: Max. 63V DC, 5A continuous
- Voltage Regulation Accuracy: ±0.5% of rated voltage (with 4% engine governing)
- Key Features: Under-frequency (V/Hz) protection, parallel operation capability (droop)

AVR 6GA2-491-1A
Buy the genuine Siemens 6GA2-491-1A Automatic Voltage Regulator (AVR). This analog AVR provides stable voltage control for 1FC4 and 1FC5 Siemens generators, ensuring reliable performance and system protection.








