Noise Limiter

Adastra NPC30A sound limiter

SKU: 952.801

£429.60 £515.52 incl. VAT

Noise pollution controller

In stock

Frequently Bought Together

Adastra NPR4 remote indicator

Remote indicator for noise pollution controller

Out of stock



The Adastra NPC30A is a sound limiter which is easy to install and operate. The system automatically monitors and limits the sound output from PA sound systems (by coloured warning lamp indication and eventually by cutting mains power the sound system) in venues such as clubs, public houses, wine bars etc, avoiding possible fines and closure of premises

Available separately the NPR4 is a “Traffic Light” type remote indicator for use with the NPC30A Noise Pollution Control System is is housed in a metal enclosure with adjustable wall or ceiling mounting bracket

  • Installation and setting up by qualified electricians only
  • Trigger level, reset time and frequency response are adjustable
  • Automatic operation
  • Fire alarm interface
  • Remote microphone (supplied) monitors the sound level
  • Built-in contactor with 30A switching capability
  • Approved by Environmental Health Departments
  • Robust steel case
  • NPR4 remote status indicators available separately
  • Power supply: 230Vac, 50Hz
  • NPC30A Dimensions: 239 x 317 x 80mm
  • NPC30A Weight: 7.6kg



Founded in 1949, Adastra has earned a reputation for delivering high quality public address systems. Adastra strives to provide complete and versatile solutions for commercial 100v line PA sound installations, with specialist products provided for zoning, noise pollution control, portable public address and induction loop systems. A comprehensive range of associated products are also available, including speaker brackets, rack cabinets, cables and microphones. These products have been created with the user in mind, offering a flexible and modular approach to installation sound systems. For over 60 years Adastra has serviced the needs of the public address sector as a fully established brand name, celebrated for quality and excellence, and will continue to develop and diversify its range in order to remain at the forefront of the industry.

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