Edwards 3-ATPINT Audio Terminal Panel (REFURBISHED)

EST 3-ATPINT – Amplifier Terminal Panel (Internal)

The EST 3-ATPINT is the internal amplifier terminal assembly for EST3 voice evacuation systems. It provides supervised connections between a 3-ASU/4 amplifier and speaker circuits, with integrated fuse protection and fault monitoring. Designed for 70 VRMS audio output, the 3-ATPINT ensures reliable distribution of emergency paging, alarms, and evacuation messages in life safety applications.

Key Features

• Interfaces 3-ASU/4 amplifier to speaker circuits

• Built-in fuses for circuit protection

• Full supervision for open, short, and ground faults

• 70 VRMS output rating

• Mounts directly in amplifier chassis