The Kussmaul Auto Interlock III 120 V is an automatic AC power transfer relay designed to manage 120 VAC power between shoreline power and an auxiliary generator or inverter. Designed for fire apparatus, ambulances, rescue vehicles, command vehicles, and other specialty vehicle applications, the Auto Interlock III automatically transfers connected electrical loads between available power sources without requiring operator intervention.

When the auxiliary generator is started, the Auto Interlock III automatically disconnects the connected load from shoreline power and transfers it to the generator or inverter power source. When auxiliary power is shut down, the system automatically returns the load to shoreline power, providing convenient and dependable power source management for onboard AC electrical equipment.

Indicator lights provide clear visual identification of which power source is active and supplying the connected load. With a maximum current capacity of 15 amps, a no-wiring-needed design, and fully automatic operation, the Auto Interlock III provides a straightforward solution for integrating multiple AC power sources into emergency and specialty vehicle electrical systems.

Features

• Automatically transfers electrical loads between shoreline power and generator or inverter power
• Designed for 120 VAC electrical systems
• Maximum current capacity of 15 amps
• Automatically disconnects the load from shoreline power when auxiliary power becomes available
• Transfers connected loads to generator or inverter power without operator intervention
• Automatically returns the load to shoreline power when auxiliary power is shut down
• Indicator lights identify the active power source supplying the connected load
• Fully automatic operation requires no routine operator intervention
• No wiring needed for simplified installation
• Helps provide dependable power source management for onboard AC electrical equipment
• Easy installation simplifies integration into emergency and specialty vehicle electrical systems
• Ideal for fire apparatus, ambulances, rescue vehicles, command vehicles, and other specialty vehicle applications
• Backed by a 3-year manufacturer's warranty

Specifications

• Manufacturer: Kussmaul Electronics
• Product Type: Automatic AC Power Transfer Relay
• Model: Auto Interlock III 120 V
• Operating Voltage: 120 VAC
• Maximum Current Capacity: 15 Amps
• Transfer Sources: Shoreline Power and Auxiliary Generator or Inverter Power
• Automatic Load Transfer: Yes
• Automatic Return to Shoreline Power: Yes
• Active Power Source Indicators: Yes
• Operator Intervention Required: No
• Installation: No Wiring Needed
• Weight: 4 lbs.
• Warranty: 3-Year Manufacturer's Warranty