Description 

The Siemens AA-30U Alarm Extender Module is designed for use with the System 3 fire alarm control panel. It provides a four-wire circuit for operating polarized, parallel-connected 24 VDC notification appliance circuits. Supporting bells, horns, and strobes, it ensures reliable Class A circuit extension in fire safety systems.

Technical Specifications 

Information About AA-30U

The AA-30U is part of Siemens’ fire safety accessory line and is intended for integration with the System 3 control panel. It offers compliance with NFPA 72 ‘Class A’ requirements, supporting notification appliances in both bell and horn/strobe configurations. The unit can handle a circuit load up to 1.5 Amps, allowing flexible expansion based on connected device current ratings. Although discontinued by the manufacturer, the AA-30U remains a dependable solution for maintaining or expanding legacy Siemens System 3 installations.

Key Features:

• Class A Circuit Extension: Meets NFPA 72 ‘Class A’ (‘Style Z’) requirements.
• Notification Appliance Support: Operates polarized, parallel-connected 24 VDC bells, horns, and strobes.
• Load Capacity: Supports up to 20 bells or 10 horns/strobes within 1.5 Amp total.
• System Compatibility: Designed for Siemens System 3 fire alarm control panels.
• Compact Design: Lightweight module for easy integration.
• Legacy Use: Maintains functionality for existing System 3 installations.

The AA-30U delivers the reliability and precision required for extending notification appliance circuits in Siemens System 3 fire alarm systems.