Maxi 30AMPS AUTOMATIC VOLTAGE SWITCHER

MAXI VP-AVS30 Appliance Guard, an Automatic Voltage Switcher (AVS) rated at 30 Amps. [1, 2]

This microprocessor-controlled device protects heavy-duty appliances—such as air conditioners, large freezers, complete offices, or entire electrical circuits—from dangerous electrical fluctuations. It monitors incoming electricity and immediately cuts off power when it detects an over-voltage or under-voltage condition, automatically restoring connection once the power remains stable for a set delay period.

Key Technical Specifications

• Current Rating: 30 Amps
• Power Capacity: 7,200 Watts (at nominal 230V)
• Start-Up Delay: Adjustable from 10 seconds to 10 minutes (plus a manual setting option)
• Protection Mechanisms: Over-voltage, under-voltage, power-back surges, and spikes/surges
• Wiring Interface: Direct wiring via heavy-duty internal brass screw terminals

Important Installation Safety Notes

• Disconnect Mains Power: Never attempt to wire or open the unit while the main power supply is active. 
• Integrate a Circuit Breaker: Ensure a fuse or dedicated circuit breaker rated at 30 Amps or lower is installed ahead of the AVS30 to protect the unit from current overloads. 
• Avoid Over-tightening: When inserting your input and output wires into the inner brass blocks, tighten them securely but do not strip the screw threads.