The NDA-200 H is a specially designed 2-channel emergency amplifier module from the VARES-1500 series, intended as a retrofit kit for the NVC series. Delivering 2x 100 W of output power, it provides dependable backup amplification for failover operation, as required in critical voice alarm systems (VAS).

Unlike the standard NDA-200 A amplifier, the NDA-200 H is purpose-built for emergency use. In the event of a failure, it automatically takes over from a faulty amplifier, maintaining continuous operation of the system. The module installs directly into existing NVC-series enclosures without the need for additional space or modification.

As part of the VARES-1500 series, the NDA-200 H is fully compatible with the system architecture and control logic. Both amplifier channels operate at 100 V constant voltage, making them ideal for long speaker lines or installations in fire protection-compliant buildings.

Technical Specifications:

General:

• Product type: 2-channel emergency amplifier module
• Series: VARES-1500
• Function: Backup amplifier for redundancy (failover operation)
• Application: Retrofit kit for NVC series
• Design: Compact module for direct integration

Performance:

• Output power: 2x 100 W (RMS)
• Output voltage: 100 V constant voltage
• Number of channels: 2 (auto failover capability)

Integration & Compatibility:

• Fully compatible with VARES-1500 system architecture
• Plug-and-play installation in existing NVC enclosures
• No additional wiring required

Applications:

• Voice alarm systems (VAS)
• Redundant solutions for safety-critical audio zones
• Public buildings, transportation hubs, industrial facilities

Included in Delivery:

• NDA-200 H emergency amplifier module
• Installation accessories
• Quick start guide