XINGNUO AS420 Automatic Voltage Regulator (AVR)
Upgrade and maintain your generator’s power stability with the XINGNUO AS420 Automatic Voltage Regulator (AVR). This high-performance module features 50Hz/60Hz switchable frequencies, adjustable voltage and stability settings, and a heavy-duty aluminum heatsink for superior cooling. An ideal, reliable replacement part for precise generator voltage control.
XINGNUO AS420 Automatic Voltage Regulator (AVR)
The XINGNUO AS420 Automatic Voltage Regulator (AVR) is a premium, highly reliable control module engineered for precise generator output voltage regulation. Built to withstand demanding operational environments, this unit features a large, integrated aluminum heatsink that provides exceptional thermal management to ensure consistent performance. The AS420 is designed for versatility and ease of use, equipped with standard terminal blocks (A1, A2, EXT) and dedicated adjustment potentiometers for TRIM, STAB (Stability), and VOLTS (Voltage). Operators can easily customize the generator’s performance using the built-in DIP switches to select between 50Hz and 60Hz operating frequencies, as well as Normal (NORM) and Fast (FAST) response modes. Please note the strict safety warnings: this module contains live terminals and a live heatsink, presenting an electric shock risk. Installation and calibration must be performed by qualified electrical technicians.
Technical Specifications:
- Brand & Model: XINGNUO AS420 (Part Numbers: E00-10057A, E000-24202)
- Frequency Configuration: DIP Switch selectable for 50Hz (ON position) or 60Hz (OFF position)
- Response Mode: DIP Switch selectable for NORM (ON position) or FAST (OFF position)
- Manual Adjustments: Integrated potentiometers for TRIM, STAB, and VOLTS tuning
- Connection Terminals: A1, A2, and EXT terminal blocks for secure wiring
- Thermal Management: Heavy-duty aluminum heatsink (Warning: Live Heatsink / Electric Shock Risk)

| Brand | XINGNUO |
|---|---|
| Model | AS420 |
GENERAL DELIVERY INFORMATION
Thank you for visiting and shopping at www.zxanhyd.com. Following are the terms and conditions for the Shipping Policy for ZXAN Hydraulic.
Orders will be processed and shipping during standard working hours (0830 – 1730 BST) Monday to Friday (excluding Bank Holidays)., are processed and despatched on the same business day. If we are experiencing a high volume of orders, shipments may be delayed by 1-2 Days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.
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Our Return & Refund Policy provides detailed information about options and procedures for returning your order.

