What makes our enclosures PAS 63100 compliant
- External Installation (Primary PAS requirement)
- Designed for external wall mounting
- Supports PAS63100 recommendation for outdoor placement
- IP 55 ingress rating
- IK 10 impact protection
👉 PAS explicitly states outdoor installation is preferred
2. Fire Separation & Containment
- Galvanized 1.5 mm steel is a non-combustible enclosure material
- Fire-rated backing board available as an option
- A1 and B1 fire rated materials (gaskets, insulation, enclosure)
👉 PAS requires mitigation of fire spread and separation
3. Ventilation & Thermal Management
- Passive/active ventilation with 2 or 4 thermostatically controlled fans
- Prevents overheating / thermal build-up
👉 PAS references ventilation as a core safety factor
4. Electrical Safety Integration
- Pre-installed AC/DC isolators (option)
- Correct cable entry (10 glands to separate cable entries)
- Designed for BS 7671 compliant installation
👉 This aligns with PAS linking to BS7671 and safe interconnection
5. Detection & Risk Mitigation
- Optional fire detection / suppression
- Controlled environment vs loft installs
👉 PAS recommends fire detection in certain locations
Find the Right Enclosure for Your Installation
Key Features
Weatherproof Construction
Built for outdoor use in UK conditions.
The IP55-rated enclosure protects against dust and water ingress for reliable long-term performance.
Controlled Ventilation & Cooling
Integrated thermostatically controlled ventilation and cooling
Supports battery performance and lifespan
Helps prevent overheating in PAS 63100 compliant setups
Secure Battery
Containment
Strong, lockable steel enclosure for maximum protection.
Prevents unauthorised access
Adds an extra layer of safety for installed systems
ATS Ready for
Future Upgrades
Prepared for system expansion.
Pre-drilled for Automatic Transfer Switch (ATS) installation
Enables simple future integration without modification.
Designed Around Risk Mitigation Principles
Eco-ESS external battery & inverter enclosures are purpose-built to support PAS 63100 compliant installations. Although PAS 63100 governs installation rather than product certification, our enclosures help installers effectively manage risk by providing:
- External containment to reduce fire spread
- Controlled environmental protection against heat, moisture, and weather
- Secure structural mounting for safe, long-term installation
- Serviceable inspection access for easy maintenance
- Thermostatically controlled ventilation to maintain stable internal temperatures
These enclosures align with PAS 63100:2024 guidelines, reflecting best practices for battery energy storage system (BESS) safety, fire risk mitigation, and system integrity. Final compliance remains the responsibility of the installing contractor.
Built for Permanent UK Outdoor Installation
Engineered for long-term outdoor deployment in UK environmental conditions.
Available Versions
Battery & Inverter Option (Standard)
Supports an inverter and up to 5 rack batteries
Battery Only Option (Standard)
Accommodates up to 9 rack batteries
Housing Association cabinet (UA-U range)
Wall-mounted inverter and batteries
Battery & Inverter Option (Slim)
Wall-mounted inverter and wall mounted or stackable batteries
String Inverter AL Enclosures (Lite)
Compact solution for string inverters
Custom BESS Enclosures
Built-to-order for larger or customized battery energy storage systems
Each version is designed for safe, PAS 63100 compliant installations and installer-friendly integration.
Benefits
Extended Battery Life
Thermostatically controlled ventilation and cooling help prolong battery lifespan.
Increased Efficiency
Maintains consistent battery performance in all climates.
Space Saving
Enables safe outdoor installation, freeing up valuable indoor space.
Choose Eco-ESS external battery & inverter enclosures for reliable, efficient, and safe outdoor battery storage that supports PAS 63100 compliant installations.
Specification Sheets & Manual
Click to download
Enclosures are officially approved by:
