Bosch EVAX 4Z Class “A” Converter, EVX-ZA Features
The EVX-ZA is an advanced converter designed to transform 4 Class “B” 2-wire circuits into 4 Class “A” 4-wire circuits, enhancing your fire alarm system’s reliability and performance. It offers seamless integration with various speaker lines, ensuring optimal power distribution for speakers and strobes.
- Power Supply: 24VDC power is supplied at TB-7, ensuring reliable performance for all connected devices.
- Connection Points: Speaker or strobe power connections are made at TB1 and TB2, facilitating easy and efficient installation.
- Field Wiring Connections: Multiple connection options at TB3, TB4, TB5, and TB6 support versatile field wiring configurations.
- Power-Limited Wiring: All wiring is power-limited, enhancing safety and compliance with industry standards.
- Mounting Options: Easily mounts to snaptrack or 5/8” nylon standoffs for flexible installation.
- Compatibility: Compatible with 25VRMS or 70VRMS speaker lines, allowing for diverse application scenarios.
- Output Capacity: Maximum speaker output of 50 watts per circuit ensures powerful audio performance.
- Strobe Output: Maximum strobe output of 1 amp per circuit supports reliable visual alerts.
Bosch EVAX 4Z Class “A” Converter, EVX-ZA Specifications
| Feature | Details |
| Model | EVX-ZA |
| Input Type | 4 Class “B” 2-wire circuits |
| Output Type | 4 Class “A” 4-wire circuits |
| Power Supply | 24VDC |
| Speaker Power Connection | TB1, TB2 |
| Field Wiring Connections | TB3, TB4, TB5, TB6 |
| Wiring Type | Power-limited |
| Mounting Options | Snaptrack or 5/8” nylon standoffs |
| Speaker Compatibility | 25VRMS or 70VRMS |
| Max Speaker Output | 50 watts per circuit |
| Max Strobe Output | 1 amp per circuit |



















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