Siemens (Pyro) | PAD-3-MB
Board Main Only for PAD-3
Siemens PAD-3-MB Main Board for PAD-3 Series NAC Extenders
The Siemens PAD-3-MB is the main circuit board used in the PAD-3 series of Notification Appliance Circuit (NAC) extenders. These extenders are designed to provide additional power and circuit capacity for notification appliances within Siemens fire alarm systems. The PAD-3-MB serves as the core component, managing power distribution, supervision, and control of connected notification devices.
Key Features:
• High-Capacity Power Supply: Provides up to 6 Amps at 24 VDC to support multiple notification appliances, ensuring adequate power for extensive fire alarm systems.
• Flexible NAC Configuration: Supports up to four Class B (Style Y) or two Class A (Style Z) NACs, each rated at 3 Amps, allowing for versatile system design and expansion.
• Auxiliary Power Output: Offers a dedicated auxiliary power output rated at 3 Amps, configurable as either non-resettable (always on) or resettable to conserve battery power during AC loss.
• Comprehensive Supervision: Monitors various conditions, including AC power status, battery voltage levels, ground faults, and NAC integrity (open, short, or over-current conditions), enhancing system reliability.
• Trouble Relay: Incorporates a Form C trouble relay that de-energizes upon detecting trouble conditions, facilitating integration with fire alarm control panels for prompt notification.