Product Description
Main Specifications
Air filtration airflow: 50 m3/h
Air ventilation airflow: 100 m3/h
Electrical requirement
Installation variants: wall-mounted (floor-free)s: single-phase 230V / 115V AC (optional)
Manual backup: included
The ARC 50 is a professional CBRN (chemical, biological, radiological and nuclear) air filtration and emergency ventilation system designed for installation in protected environments such as safe rooms, civil defence shelters, bunkers and critical infrastructure.
The system provides fresh filtered air while creating positive overpressure inside the protected space, establishing a Toxic Free Area (TFA) and ensuring safe breathing conditions during contamination scenarios.
Designed for reliability and redundancy, the ARC series combines electrical operation with manual backup to ensure functionality even during power outages.
Technical Specifications
Air Filter Unit (AFU 50)
Nominal filtration airflow: 50 m3/h
Mechanical filtration efficiency: ≥ 99.995%
Pressure drop at nominal airflow: 320 Pa
Filter unit weight: 23.3 kg
Ventilation Performance
Airflow in ventilation mode: 100 m3/h
Airflow in filtration mode: 50 m3/h
Nominal pressure (ventilation): 910 Pa
Nominal pressure (filtration): 945 Pa
Motor and Power Supply
Electric blower: single-phase motor
Rated voltage: 230V AC (optional 115V)
Operational current: approx. 3.5 A
Frequency: 50 Hz
Soft-start option available to reduce inrush current
Blast Valves
Functional pressure durability: up to 900 kPa
Maximum pressure resistance: up to 2000 kPa
Normally open and normally closed configurations available


Total estimated delivery time
After confirming your order on Portugal Bunkers & Shelters, you will receive a confirmation email with all product information, prices and taxes.
After we submit your request, you will receive an email again confirming that your order has been sent.
The total time required to receive an order is as follows:

Total shipping time is calculated from the time your order is placed to the time it is shipped. Total delivery time is divided into processing time and shipping time.
Processing Time: The time required to analyse your order and prepare the products for shipment from our warehouse. This includes, in some cases, the production or customisation of products.
Packaging time: The time required to package the products. This includes the quality control checks when products were customised.
Delivery Time: The time it takes for the product to ship from our warehouse to your shipping address.
Delivery time may be conditioned by the address you enter in your purchase.
If you require further information, please contact our customer service.
We would be happy to support you with your purchase.