ARCA shelters by BUNKER-OK are flagship next-generation modular protection systems, built according to the modern CPS (Civil Protection Standard). They are created for a new reality where safety is not a temporary fix, but a strategic responsibility for life.
ARCA shelters are among the most technologically advanced solutions on the Ukrainian shelter market:
- successfully tested against the explosion of a Shahed-136 high-explosive fragmentation UAV (47.8 kg), as documented in the Test Protocol;
- feature a 10-fold safety margin confirmed by testing;
- possess the highest protection class in Ukraine: A-I+ and withstand blast overpressure exceeding 500 (1300) kPa;
- equipped with TriCore Armor — a proprietary continuous double three-level reinforcing cage designed for maximum structural integrity and as additional protection against overturning and progressive collapse. In a powerful explosion, the danger often lies not in the initial impact but in the cascading failure of the structure. The TriCore Armor cage maintains its shape even under partial damage, increases safety for those inside, preserves airtightness, and provides enhanced geometric stability to the door frame to prevent the exit from jamming;
- feature the Dual Armor engineering system with double reinforcement area for enhanced protection, designed for superior structural strength, better load distribution, and increased containment of fragmentation damage in modern combat threat environments. This ensures significantly higher resistance to the blast wave at peak load, better distributes impact energy, reduces the risk of local failure, minimizes secondary fragmentation, and inhibits crack formation;
- offered in three interior space formats (internal width): ARCA NOVA Shelter (2.5 m), ARCA SPACE Shelter (4.0 m), and ARCA MAX Shelter (6.0 m);
- equipped with the Blast Comfort anti-explosion valve, which effectively dampens the blast wave and reduces overpressure, protecting people inside from critical impact loads and ensuring a higher level of safety and comfort during their stay;
- equipped with protective doors featuring enhanced blast overpressure resistance of up to 800 kPa, or
- upon request, equipped with BlastLock reinforced protective doors with reinforced concrete inserts, tested against the blast of a Shahed-136 warhead. The reinforced concrete core creates an enhanced barrier against fragmentation, strengthens the door's ability to stop shrapnel, secondary impact elements, and critical loads, increases the entrance group's resistance to the blast wave, and helps maintain the shelter's protective perimeter;
- offered in three configuration levels: SAFE CORE, COMFORT, and PREMIUM.
ARCA Shelters are designed as multi-purpose modular protection systems that can adapt to various levels of tasks:
- rapid mobile shelter (delivered ready-to-use and relocated between sites without loss of protective properties);
- family safe space (individual solutions for any requirement);
- corporate solutions (Anti-Radiation Shelters, Primary Mobile Shelters, Fallout Shelters, reinforced concrete modular shelters with capacities from 5 to 100+ people);
- shelters for crowded areas: transit stop shelters for local transport;
- protection for our loved ones: playgrounds adapted as defense against modern threats;
- facilities for infrastructure protection.
Multi-functional ARCA shelters are more than just shelters.
They represent a new standard of modular safety, where technology, experience, certification, and engineering work for the ultimate goal — protecting people.
This is a strategic investment in life and safety for decades to come: up to a 50-year warranty on the concrete structure.
By investing in ARCA NOVA today, you invest in the right to live, protect, and pass a guarantee of safety to future generations.
ARCA Shelters — modular protection created to preserve life.
We are convinced: the CPS quality standard by BUNKER-OK must become the fundamental basis of choice for every buyer and a new benchmark of quality for every shelter manufacturer.
