Why Choose the ABB 4/8EF21 Fire Protection Extension Frame?
The ABB 4/8EF21, order code 2CPX041086R9999, is a 90-minute fire protection extension frame for double-leaf facing doors within the ABB VF fire protection system. As part of the ABB DESUJ Sub Distribution product group, it provides additional installation clearance for compatible fire protection facing doors used with professional indoor electrical distribution assemblies.
The 4/8EF21 has external dimensions of 1295 mm wide × 2095 mm high × 22 mm deep and internal dimensions of 1065 mm wide × 1865 mm high × 22 mm deep. It is designed for compatible double-leaf facing doors with construction height 8 and field width 4, making it suitable for large, full-height ABB fire protection distribution arrangements.
The extension frame is intended for installations where an existing electrical distribution assembly projects by more than 20 mm from the wall and additional clearance is required for the facing door. The 4/8EF21 provides 90-minute fire resistance and 90-minute functional integrity, uses non-combustible A2-class construction and provides IP54 protection as part of the appropriate compatible ABB installation.
Key Advantages
- Purpose-designed extension frame for ABB double-leaf fire protection facing doors.
- Provides an additional 22 mm installation depth.
- Suitable where an existing distribution assembly projects more than 20 mm from the wall.
- Large 1295 × 2095 × 22 mm external dimensions.
- Generous 1065 × 1865 × 22 mm internal dimensions.
- Designed for construction height 8 and field width 4.
- 90-minute fire resistance and functional integrity.
- A2 non-combustible building-material classification.
- IP54 protection as part of the compatible fire protection system.
- System-compatible component within the ABB VF fire protection range.
Key Features
- ABB 4/8EF21 fire protection extension frame.
- ABB order code 2CPX041086R9999.
- Designed for double-leaf fire protection facing doors.
- 1295 mm overall width.
- 2095 mm overall height.
- 22 mm overall depth.
- 1065 × 1865 × 22 mm internal dimensions.
- Construction height 8.
- Field width 4.
- 90-minute fire resistance.
- 90-minute functional integrity.
- IP54 degree of protection.
- A2 non-combustible building-material classification.
- Designed for indoor installations.
- Part of the ABB VF fire protection series.
- Product weight of approximately 26 kg.
- EAN / GTIN 4011617410867.
Additional Clearance for Full-Height ABB Fire Protection Doors
An extension frame allows a compatible fire protection facing door to be installed where an existing electrical distribution assembly projects further from the wall than the standard installation permits. The ABB 4/8EF21 adds 22 mm of installation depth and is specifically designed for double-leaf facing doors with construction height 8 and field width 4.
With external dimensions of 1295 × 2095 × 22 mm and internal dimensions of 1065 × 1865 × 22 mm, the frame provides a coordinated solution for large, full-height ABB fire protection assemblies. It is particularly suitable when an existing distribution board projects by more than 20 mm from the wall and additional clearance is required to install the compatible protective facing door.
Typical Applications
- ABB fire-protected low-voltage sub-distribution systems.
- Full-height double-leaf fire protection facing-door installations.
- Existing distribution boards projecting more than 20 mm from the wall.
- Large commercial and public-building electrical distribution systems.
- Industrial electrical distribution installations.
- Emergency and safety-related electrical distribution systems.
- Electrical risers and building-services distribution areas.
- Compatible ABB VF indoor fire protection installations.
