Why Choose the ABB 1/2UF2121 Fire Protection Enclosure?
The ABB 1/2UF2121, order code 2CPX040077R9999, is a 90-minute fire protection flush-mounted wall enclosure designed for indoor low-voltage sub-distribution installations. As part of the ABB DESUJ Sub Distribution product group and UF enclosure range, it combines a non-combustible enclosure construction with defined fire resistance and functional integrity for demanding electrical distribution applications.
The enclosure measures 332 mm wide × 982 mm high × 205 mm deep and provides an internal installation area of approximately 250 × 900 × 118 mm. It offers 6 RE, one field width and 72 space units, providing a structured platform for compatible distribution panels, combination sets and CombiLine modules on an EDF mounting frame.
Designed for 90-minute fire protection, the 1/2UF2121 provides 90-minute fire resistance, fire-load insulation and functional integrity. It features IP41 protection, Class II protective insulation, smoke and cold-smoke resistance, a single left-hinged door with a 180° opening angle, and cable entry through fire-protection cable barriers at the top and bottom.
Key Advantages
- 90-minute fire resistance for demanding electrical distribution installations.
- 90-minute functional integrity for compatible electrical systems.
- Non-combustible A2-class construction.
- Practical 332 × 982 × 205 mm external dimensions.
- IP41 ingress protection for indoor applications.
- Class II protective insulation.
- Smoke-resistant and cold-smoke-resistant enclosure design.
- 72 space units across six installation rows.
- Prepared for compatible ABB distribution panels, combination sets and CombiLine modules.
Key Features
- ABB 1/2UF2121 fire protection wall enclosure.
- ABB order code 2CPX040077R9999.
- Flush-mounted installation.
- 332 mm overall width.
- 982 mm overall height.
- 205 mm overall depth.
- 118 mm internal installation depth.
- 90-minute fire resistance.
- 90-minute fire-load insulation.
- 90-minute functional integrity.
- IP41 degree of protection.
- Protection Class II protective insulation.
- 6 RE with 72 space units.
- Left-hinged single door with 180° opening angle.
- Swing-handle lock with half cylinder.
- Top and bottom cable entry through fire-protection cable barriers.
- Rated for 400 V AC at 50/60 Hz.
- Rated insulation voltage of 690 V.
- Maximum permissible power loss of 14 W at 25 °C ambient temperature.
90-Minute Fire Protection for Electrical Distribution Systems
Fire protection enclosures are designed to provide additional protection for electrical distribution equipment where maintaining separation from fire and supporting continued system operation are important design requirements. The ABB 1/2UF2121 combines 90-minute fire resistance, fire-load insulation and functional integrity with non-combustible A2 construction for specialist indoor distribution applications.
Its 982 × 332 × 205 mm enclosure format provides six installation rows and 72 space units, while the internal 118 mm installation depth supports compatible ABB distribution equipment. Smoke resistance, IP41 protection, fire-protection cable entries and a securely locking single door provide a coordinated enclosure solution for professionally designed fire-protected electrical installations.
Typical Applications
- Fire-protected low-voltage sub-distribution systems.
- Electrical installations requiring 90-minute functional integrity.
- Commercial and public building electrical distribution.
- Emergency and safety-related electrical distribution systems.
- Flush-mounted indoor distribution-board installations.
- Compatible ABB distribution panels and combination sets.
- ABB CombiLine modules installed on EDF mounting frameworks.
