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3-ZA40B | Edwards EST 40W Zoned Audio Amplifier with 25/70 VRMS Output and NAC Circuit
- Regular price
- $907.00
- Sale price
- $907.00
- Regular price
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Product Description P/N: 3-ZA40B
Description
The Edwards™ 3-ZA40B is a 40-watt zoned amplifier module for the EST3 fire alarm and voice evacuation system. It provides digital audio channel selection with built-in de-multiplexing circuitry and supports either 25 VRMS or 70 VRMS speaker circuits. Designed for reliable emergency communication, it also includes a 24 VDC NAC output for strobe synchronization.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Edwards / EST |
| Category | Flame Safety Products |
| Part Number | 3-ZA40B |
| Subcategory | Flame Safety Amplifier |
| Type | Zoned Amplifier |
| Power Rating | 40 W |
| Output Voltage | 25 VRMS or 70 VRMS (selectable) |
| Input | 8-channel multiplexed digitized audio |
| Wiring | Class A or Class B |
| Frequency Response | 400 Hz to 4 kHz ±3 dB |
| Harmonic Distortion | < 7% |
| NAC Output | 24 VDC, 3.5 A |
| EOL Resistor | 15 kΩ (internal) |
| Wire Size | 12–18 AWG (1.0–4.0 mm²) |
| Space Requirement | 1 LRM rail space |
| Operating Temp | 32–120 °F (0–49 °C) |
| Relative Humidity | 93% non-condensing |
| Mounting | Cabinet rail-mounted |
| Weight | 1.20 lbs |
Information About 3-ZA40B
The 3-ZA40B is part of the EST3 audio amplifier family, engineered to deliver high-quality voice and tone signals in life safety applications. It mounts in the EST3 cabinet, occupying one LRM rail space, and receives power and data through the system rail assembly. With software-controlled audio channel selection, the module can output live paging or stored messages from any of eight multiplexed channels. The amplifier supports Class A or B wiring, has selectable 25 VRMS or 70 VRMS outputs, and includes a dedicated 24 VDC NAC rated at 3.5 A for visual signaling devices such as strobes. Its rugged, digitally controlled design ensures compliance with fire alarm and emergency communication standards.
Key Features:
- Digital Audio Distribution: 8-channel multiplexed input with built-in de-multiplexing.
- Flexible Output Voltage: Selectable 25 VRMS or 70 VRMS operation.
- 40-Watt Power Rating: Provides reliable output for medium-sized zones.
- Integrated NAC Output: 24 VDC, 3.5 A power-limited NAC included for strobes.
- Software Controlled: Audio channel selection managed through network programming.
- Compact Design: Occupies only one LRM rail space in the cabinet.
- Removable Terminals: Simplifies field wiring connections.
- Frequency Response: 400 Hz to 4 kHz with less than 7% harmonic distortion.
- Fault Tolerance: Supports Class A or Class B wiring configurations.
- Environmental Performance: Operates in temperatures from 0 °C to 49 °C with up to 93% RH.
The 3-ZA40B delivers the reliability and clarity required for fire alarm voice evacuation and signaling applications.
Description
The Edwards™ 3-ZA40B is a 40-watt zoned amplifier module for the EST3 fire alarm and voice evacuation system. It provides digital audio channel selection with built-in de-multiplexing circuitry and supports either 25 VRMS or 70 VRMS speaker circuits. Designed for reliable emergency communication, it also includes a 24 VDC NAC output for strobe synchronization.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Edwards / EST |
| Category | Flame Safety Products |
| Part Number | 3-ZA40B |
| Subcategory | Flame Safety Amplifier |
| Type | Zoned Amplifier |
| Power Rating | 40 W |
| Output Voltage | 25 VRMS or 70 VRMS (selectable) |
| Input | 8-channel multiplexed digitized audio |
| Wiring | Class A or Class B |
| Frequency Response | 400 Hz to 4 kHz ±3 dB |
| Harmonic Distortion | < 7% |
| NAC Output | 24 VDC, 3.5 A |
| EOL Resistor | 15 kΩ (internal) |
| Wire Size | 12–18 AWG (1.0–4.0 mm²) |
| Space Requirement | 1 LRM rail space |
| Operating Temp | 32–120 °F (0–49 °C) |
| Relative Humidity | 93% non-condensing |
| Mounting | Cabinet rail-mounted |
| Weight | 1.20 lbs |
Information About 3-ZA40B
The 3-ZA40B is part of the EST3 audio amplifier family, engineered to deliver high-quality voice and tone signals in life safety applications. It mounts in the EST3 cabinet, occupying one LRM rail space, and receives power and data through the system rail assembly. With software-controlled audio channel selection, the module can output live paging or stored messages from any of eight multiplexed channels. The amplifier supports Class A or B wiring, has selectable 25 VRMS or 70 VRMS outputs, and includes a dedicated 24 VDC NAC rated at 3.5 A for visual signaling devices such as strobes. Its rugged, digitally controlled design ensures compliance with fire alarm and emergency communication standards.
Key Features:
- Digital Audio Distribution: 8-channel multiplexed input with built-in de-multiplexing.
- Flexible Output Voltage: Selectable 25 VRMS or 70 VRMS operation.
- 40-Watt Power Rating: Provides reliable output for medium-sized zones.
- Integrated NAC Output: 24 VDC, 3.5 A power-limited NAC included for strobes.
- Software Controlled: Audio channel selection managed through network programming.
- Compact Design: Occupies only one LRM rail space in the cabinet.
- Removable Terminals: Simplifies field wiring connections.
- Frequency Response: 400 Hz to 4 kHz with less than 7% harmonic distortion.
- Fault Tolerance: Supports Class A or Class B wiring configurations.
- Environmental Performance: Operates in temperatures from 0 °C to 49 °C with up to 93% RH.
The 3-ZA40B delivers the reliability and clarity required for fire alarm voice evacuation and signaling applications.