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ARCA SPACE 4.0 — a reinforced concrete modular shelter of the highest protection class.
Certified ARCA SPACE Modular Shelter by BUNKEROK
Space, protection, and comfort for the private sector and business.
The ARCA SPACE 4.0 shelter is a next-generation reinforced concrete modular shelter, engineered according to the modern CPS (Civil Protection Standard) and created for a new reality where safety is not a temporary fix, but a strategic responsibility for human lives.
The ARCA SPACE shelter, with an internal width of 4.0 m and a height of 2.5 m, represents the optimal balance between:
- capacity;
- protection level;
- stay comfort;
- installation speed;
- adaptability to various deployment scenarios.
Primary Purpose of the ARCA SPACE Shelter
The ARCA SPACE shelter is designed for:
- the private sector;
- country houses;
- cottages;
- offices;
- businesses;
- manufacturing plants;
- commercial properties;
- enterprise personnel;
- public spaces.
The Ideal Solution for the Private Sector
The ARCA SPACE shelter allows for the organization of: 4–6 full-sized berths (beds) for the comfortable and safe stay of a family during prolonged threats.
The internal space accommodates setup for:
- a lounge/rest area;
- storage spaces;
- autonomous power supply;
- ventilation;
- a sanitary unit (optional).
An Effective Solution for Business and Personnel
The ARCA SPACE shelter is also perfectly suited as: a personnel shelter with a capacity of 11–13 seats.
A solution for:
- offices;
- manufacturing facilities;
- warehouses;
- logistics centers;
- the agricultural sector;
- commercial properties.
ARCA SPACE Specifications
- Number of sections: 2
- Number of vestibules: none
- Usable area: 6.8 m²
- Capacity: 4-6 berths (beds)
- Capacity: 11-13 seats
- Weight: 56 t
- Protection Class: A-I
- Ceiling thickness: 700 mm
- Wall and floor thickness: 350 mm
Dimensions
- Overall dimensions (WxLxH): 4.70 x 2.40 x 3.55 m
- Internal dimensions (usable area without vestibules): 4.00 x 1.70 x 2.50 m
Materials
- Reinforced concrete: Class C35/45.
- Embedded parts: Grade S245 steel.
- Reinforcement: Grade A500C (designed for crack resistance)
- Double reinforcement area
Calculated separately after site inspection:
- Site preparation: earthworks, additional waterproofing, connection to engineering utilities, etc.
- Delivery and unloading
Format:
A full-fledged stationary reinforced concrete modular shelter for above-ground, underground, or semi-buried installation.
ARCA SPACE is one of the most technologically advanced shelters in Ukraine
ARCA shelters:
- have been successfully battle-tested against the explosion of a Shahed-136 strike UAV warhead (47.8 kg);
- feature a lab-tested 10-fold safety margin;
- comply with the highest protection class A-I+;
- withstand blast overpressure exceeding 500 (1300) kPa;
- are engineered for modern civil defense scenarios.
Engineering Technologies of ARCA SPACE
TriCore Armor
A continuous three-tier reinforcing cage that:
- increases structural integrity;
- reduces the risk of progressive collapse;
- preserves stability even under extreme loads.
Dual Armor
An enhanced dual reinforcement area system for:
- superior distribution of impact loads;
- minimization of crack formation;
- additional protection against fragmentation damage.
Blast Comfort
An anti-explosion valve that:
- dampens the blast wave;
- reduces overpressure;
- increases the safety of people inside the shelter.
BlastLock (Optional)
Reinforced protective doors with a reinforced concrete core for additional protection against fragmentation and explosive loads.
Base Configuration
- Installation and setup
- Reinforced airtight doors
- Seating benches
- Fire extinguishers
- First-aid kit
- Power grids
- Forced ventilation
- Anti-explosion valve
- Certificate of Conformity
Additional options: sanitary unit (bathroom), air conditioning, Wi-Fi, Smart Lock, video surveillance, autonomous power supply, etc., upon request.
Installation and Additional Works
Calculated separately:
- site preparation;
- earthworks (if required);
- additional waterproofing (if required);
- connection to engineering utilities (if required);
- delivery and unloading.
ARCA SPACE is more than just a shelter
It is a modern secure space for:
- living;
- working;
- family safety;
- personnel protection;
- long-term peace of mind.
Up to a 50-year warranty on the concrete structure makes ARCA SPACE a strategic investment in safety for decades to come.
ARCA SPACE 4.0
Space. Protection. Reliability.
BUNKEROK
Safety must become the new norm.
No questions about this product, be the first and ask your question.
BUNKER-OK is a Ukrainian engineering brand providing modern shelters and civil defense solutions for the private sector, business, and civil and strategic infrastructure.
We design and manufacture protective structures, systematically improving them based on practical operational experience, analysis of shelling consequences, and the actual behavior of structures during combat strikes.
Drawing on the experience of over 400 installed shelters, the BUNKER-OK team has reached an unequivocal conclusion: not every structure that looks like a shelter is capable of providing the proper level of protection.
We have studied actual destruction and structural weaknesses of low-quality installations, and we responsibly state: effective protection is determined not by the volume of concrete, but by structural integrity and a well-engineered reinforcing cage that stops shrapnel, localizes impact damage, and saves lives.
That is why the BUNKER-OK team is the first in Ukraine to establish CPS (Civil Protection Standard) — a next-generation quality standard.
CPS was created based on physical loads, engineering expertise, and field testing against modern combat threats, including:
- 120 mm OF-843 mortar shell
- 125 mm OF A-IX-2 tank shell
- HE-Frag warhead of the Shahed-136 strike UAV (47.8 kg)
In today's reality, the legally established testing standard of 2 kg of explosives (TNT) is increasingly becoming just a basic regulatory threshold. It rarely corresponds to the scale of modern threats, cannot be considered a comprehensive indicator of protection, and is not a convincing basis for evaluating a shelter's reliability.
The CPS quality standard by BUNKER-OK significantly exceeds current state requirements and sets a new safety benchmark for the market.
We are convinced: the CPS quality standard must become the fundamental basis of choice for every buyer and a new benchmark of quality for every shelter manufacturer.
BUNKER-OK is not just a manufacturer.
We are a company shaping a new culture of protection in Ukraine and worldwide.
Act now! Your personal protection solution selection is waiting!
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- Freight transport across Ukraine
- Special transport across Ukraine
- Direct deposit
- Payment online (Visa/MasterCard)
- 100% original product
- Warranty is up to 50 years
