The Edwards 3-ZA20B Zoned Amplifier represents a critical component in commercial fire alarm notification systems, engineered to provide robust audio signal distribution and reliable emergency communication. Designed for professional installers working with complex fire detection infrastructures, this 20-watt class B amplifier delivers flexible voltage output and efficient mounting capabilities in commercial and institutional settings.
Ideal for integration with addressable fire alarm control panels in large facilities such as office complexes, educational institutions, healthcare facilities, and industrial environments, the 3-ZA20B offers precise audio signal management. Its compact design allows seamless installation within limited electrical enclosure spaces, making it a versatile solution for sophisticated notification network architectures.
Key Features
- 20-watt output with selectable 25V or 70V VRMS class B configuration
- Built-in Class B notification appliance circuit (NAC) rated at 3.5 amps
- Compatible with single user interface module integration
- Compact 1 LRM space mounting profile for efficient panel installation
- Engineered for compliance with NFPA 72 fire alarm notification standards
- UL listed for reliable performance in life safety applications
Specifications
- Power Output: 20 watts
- Voltage Options: 25 VRMS or 70 VRMS
- NAC Rating: 3.5 amps
- Mounting Space: 1 LRM
- Certification: UL Listed
Fire alarm professionals will appreciate the 3-ZA20B’s robust engineering, which supports critical emergency communication infrastructure in commercial and institutional environments. Its flexible design enables precise audio signal distribution across notification zones while maintaining strict compliance with national fire protection standards.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 2 lbs |
|---|---|
| Dimensions | 14 × 7 × 4 in |
| Condition | New |
| Manufacturers | Edwards |
| Part Type | Interface Module |






