The ESU-002A is a compact and reliable emergency switching unit designed to perform two independent switching functions during emergency scenarios. In the event of a priority signal (e.g., a fire alarm), it can switch 100V speaker lines from a tenant's local audio program to the building's central emergency system and simultaneously disconnect two separate 230V power supplies.

This functionality is crucial in multi-tenant buildings where private audio systems must be overridden to allow alarm announcements from the main system. The unit features a priority relay module capable of handling both 100V audio signals and high-voltage mains power (up to 250 V AC).

The ESU-002A is easy to install thanks to accessible terminal blocks and defined wire stripping lengths. Housed in a durable enclosure rated IP 66, it is suitable for both indoor and harsh outdoor environments.

Technical Data:

• Model: ESU-002A
• Product type: Emergency switching unit
• Functions:
• Switching 100V speaker lines to emergency feed
• Disconnecting 2 separate 230V mains power circuits
• Relay control:
• Active: 16.8 – 30 V DC
• Inactive: 0 – 4.8 V DC
• Switching capacity (100V relay): max. 500 W
• Switching current (mains relay): 8 A AC per contact
• Switching voltage (mains relay): 250 V AC per contact
• Terminal block specifications:
• Without ferrule: 0.08 – 2.5 mm²
• With ferrule: 0.25 – 1.5 mm²
• Wire stripping length: 5.6 mm
• Enclosure: Plastic, protection class IP 66
• Dimensions (W × H × D): 85 × 85 × 50 mm

Included Items:

• 1x ESU-002A emergency switching unit
• 1x Installation manual

Special Features:

• Ideal for automatic emergency override in multi-tenant installations
• Compact and easy to install
• High protection rating (IP 66) for demanding environments
• Separate relays for 100V audio and 230V mains switching