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
| Condition |
New/Never Used Surplus |
| Brand |
Siemens |
| Category |
Fire Safety |
| Part Number |
AA-30U |
| Subcategory |
Alarm Extender Modules |
| Manufacturer |
Siemens Industry, Inc. |
| Compatibility |
Siemens System 3 FACP |
| Circuit Type |
Four-wire, polarized NACs |
| Voltage |
24 VDC nominal |
| Load Capacity |
Up to 1.5 Amps |
| Device Support |
20 bells or 10 horns/strobes (typical) |
| Compliance |
NFPA 72 ‘Class A’ (‘Style Z’) |
| Production Status |
Discontinued |
| Unit of Measurement |
EA (Each) |
| Dimensions |
N/A |
| Weight |
0.2 lbs |
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.
