Why Choose the ABB OT400DLAA4T 400 A 4-Pole IP54 Steel Enclosed Safety Switch?
The ABB OT400DLAA4T (1SCA022461R4860) is a heavy-duty 400 A, four-pole steel enclosed safety switch-disconnector designed for manual electrical isolation and load switching in industrial and commercial power distribution systems. Part of ABB's OT enclosed switch range, it combines a high-current switching assembly with a robust metal enclosure rated to IP54.
Designed for applications requiring four-pole isolation, the OT400DLAA4T provides a practical switching solution for three-phase electrical installations where a fourth conductor must also be switched. Its open top and bottom cable entry arrangement allows suitable cable entry accessories to be selected for the installation.
The steel enclosure offers mechanical protection for the switching equipment, while the enclosed switch-disconnector provides a clearly defined local isolation point. The ABB OT400DLAA4T is particularly suited to industrial distribution equipment, machinery supplies and fixed electrical installations requiring a 400 A four-pole safety switch.
Key Advantages
- 400 A rated switching capacity for high-current industrial electrical applications.
- Four-pole configuration enables simultaneous switching of four conductors.
- IP54 enclosure protection provides resistance to dust ingress and splashing water.
- Steel enclosure construction provides a robust housing for industrial switchgear.
- Open top and bottom cable entry arrangement allows flexibility when planning cable routes.
- Manual load-break switching supports controlled disconnection of appropriately rated electrical loads.
- Enclosed safety switch design provides a dedicated local electrical isolation point.
- Suitable for industrial power distribution and machinery supply applications.
- Four-pole operation supports installations requiring switching of three phases and a neutral conductor, where permitted by the electrical design.
- Separate cable entry accessories can be selected to suit installation requirements.
- ABB OT switch-disconnector technology provides an established solution for industrial electrical isolation.
- Suitable for fixed installation by qualified electrical personnel.
Key Features
- ABB OT400DLAA4T enclosed safety switch-disconnector.
- 400 A nominal current rating.
- Four-pole switching arrangement.
- IP54-rated enclosure.
- Steel enclosure construction.
- Open top cable entry.
- Open bottom cable entry.
- Manual switch-disconnector operation.
- Load-break switching function for appropriately rated circuits.
- Enclosed construction for industrial electrical isolation.
- Designed for fixed electrical installation.
- Suitable for integration into industrial distribution and machinery supply systems.
- Compatible cable entry arrangements must be selected to suit the enclosure and required protection level.
Technical Specifications
- Manufacturer: ABB
- Series: OT Enclosed Switch-Disconnectors
- Model: OT400DLAA4T
- ABB order code: OT400DLAA4T
- ABB product ID: 1SCA022461R4860
- Product type: Steel enclosed safety switch-disconnector
- Nominal current rating: 400 A
- Number of poles: 4
- Enclosure material: Steel
- Enclosure protection rating: IP54
- Top cable entry: Open
- Bottom cable entry: Open
- Cable entry configuration: Open top and bottom, requiring suitable installation-specific entry arrangements
- Operating principle: Manual switch-disconnector
- Switching function: Load breaking and electrical isolation
- Installation: Fixed mounting
- Product group: Metal Enclosed (Loadbreak)
- Product category: Metal Enclosed Switch-Disconnectors
Reliable 400 A Four-Pole Isolation with Open Top and Bottom Cable Entries
The ABB OT400DLAA4T is designed to disconnect four electrical conductors through a common switching arrangement. Its 400 A nominal rating makes it suitable for appropriately designed high-current distribution and machinery supply circuits. The four-pole configuration is particularly useful where the electrical design requires all three phase conductors and a fourth conductor to be switched together.
The steel enclosure protects the internal switching equipment against mechanical exposure and provides an IP54-rated housing when the completed installation maintains the specified degree of protection. The open top and bottom facilitate cable routing, but suitable cable entry plates, flanges or other compatible accessories must be selected and installed as required.
As a switch-disconnector, the OT400DLAA4T provides switching and isolation rather than automatic overcurrent protection. Appropriate upstream or associated protective devices must therefore be selected according to the circuit design. Electrical installers should verify the applicable utilisation-category ratings, conductor sizes, short-circuit coordination and isolation requirements before commissioning.
Typical Applications
- Industrial electrical distribution systems.
- 400 A feeder isolation.
- Three-phase and neutral switching arrangements.
- Industrial machinery supply isolation.
- Manufacturing and production facilities.
- Commercial building electrical plant.
- Industrial motor supply circuits within the applicable switching ratings.
- Electrical distribution and sub-distribution equipment.
- Fixed industrial switchgear installations.
- Local maintenance isolation points.
- Electrical installations requiring IP54 steel enclosed switching.
- Projects requiring open top and bottom cable entry arrangements.
