Why Choose the ABB OT400DLUU3TAY 400A Aylesford Safety Switch?
The ABB OT400DLUU3TAY, manufacturer order number 1SCA022315R0720, is a 400 A industrial safety switch designed for manual electrical isolation in demanding machinery and power distribution applications. Identified in ABB's product listing as the 400A Safety Switch – Aylesford, this model belongs to the manufacturer's Metal Enclosed (Loadbreak) product group.
As a member of the ABB OT400 enclosed switch-disconnector family, the OT400DLUU3TAY provides a high-capacity isolation solution for industrial electrical systems. Its model designation identifies it as a three-pole configuration, suitable for applications requiring simultaneous disconnection of three phase conductors through a single switching mechanism.
The Aylesford designation distinguishes this particular ABB product variant from standard catalogue models. While ABB's wider OT400 safety switch range includes robust steel enclosures, externally operated handles and industrial cable-entry arrangements, the precise construction and accessories supplied with this specific variant should be confirmed against its individual manufacturer documentation.
For electrical contractors, machinery manufacturers and industrial maintenance teams, the OT400DLUU3TAY offers a clearly identified 400 A-class ABB enclosed safety switch for use in appropriately designed installations where dependable isolation and equipment safety are essential.
Key Advantages
- 400 A current classification for substantial industrial electrical installations.
- Three-pole switch configuration for simultaneous disconnection of three phase conductors.
- ABB OT400 switch-disconnector technology designed for industrial switching and isolation duties.
- Metal enclosed construction associated with ABB's heavy-duty load-break safety switch range.
- Manual isolation capability for machinery, equipment and electrical distribution circuits.
- Aylesford-specific product designation for accurate identification and replacement ordering.
- Suitable for industrial maintenance isolation when correctly selected and installed.
- High-capacity switching platform for demanding three-phase applications.
- Dedicated external isolation point for appropriately designed industrial equipment.
- ABB manufacturer traceability through the unique order number 1SCA022315R0720.
- Established OT product family supported by ABB's enclosed switch-disconnector range.
- Application flexibility across manufacturing, processing and industrial plant installations.
Key Features
- Manufacturer: ABB.
- Model: OT400DLUU3TAY.
- Manufacturer order number: 1SCA022315R0720.
- Product designation: 400A Safety Switch – Aylesford.
- ABB product group: 311019 – Metal Enclosed (Loadbreak).
- Product family: ABB OT.
- Product category: Industrial enclosed safety switches.
- Current classification: 400 A.
- Switching configuration: Three-pole.
- Primary function: Manual load switching and electrical isolation.
- Intended application: Industrial three-phase electrical systems.
- Enclosure category: Metal enclosed.
- Product variant: Aylesford.
- Operational current ratings: Subject to the manufacturer's utilisation-category and voltage specifications.
- Installation requirements: Follow the exact ABB product documentation and applicable electrical standards.
Technical Specifications
- Brand: ABB
- ABB order code: OT400DLUU3TAY
- Manufacturer article number: 1SCA022315R0720
- Manufacturer product description: 400A SAFETY SWITCH-AYLESFORD
- ABB product group: 311019 – Metal Enclosed (Loadbreak)
- Product series: ABB OT400
- Product type: Enclosed safety switch / load-break switch disconnector
- Current classification: 400 A
- Number of switched poles: 3, as indicated by the model designation
- Enclosure classification: Metal enclosed
- Switch operation: Manual
- Primary electrical function: Load switching and isolation
- Application: Industrial machinery and electrical equipment
- Variant designation: Aylesford
- Rated operational current by utilisation category: Confirm from the exact ABB product datasheet
- Rated operational voltage: Confirm from the exact ABB product datasheet
- Motor switching power: Confirm from the exact ABB product datasheet
- Enclosure ingress protection: Confirm for this Aylesford variant
- Enclosure dimensions: Confirm from the exact ABB product drawing
- Enclosure weight: Confirm from the exact ABB product documentation
- Operating handle: Confirm colour, type and included accessories
- Padlocking provision: Confirm from the exact ABB product documentation
- Cable-entry arrangement: Confirm from the exact ABB product drawing
- Auxiliary contacts: Confirm the supplied contact configuration
- Neutral terminal: Confirm whether supplied
- Protective earth terminal: Confirm termination details
- Installation standard: Select and install in accordance with applicable electrical regulations
- Relevant switch-disconnector standard: IEC/EN 60947-3, subject to the product's certification
400A Industrial Switching and Electrical Isolation
The ABB OT400DLUU3TAY is intended for industrial electrical installations requiring a substantial manual isolation device. Its 400 A classification places it within ABB's high-capacity OT400 switch-disconnector range, while its three-pole configuration makes it relevant to appropriately designed three-phase electrical systems.
In a typical three-phase installation, a three-pole switch disconnector operates the three phase conductors together. This provides a single switching point for disconnecting machinery or equipment from its electrical supply. Whether the device is suitable for a particular motor or load depends on the operating voltage, full-load current, utilisation category and the detailed ABB ratings for this exact product.
The Aylesford product designation is important when specifying or replacing the OT400DLUU3TAY. ABB offers numerous OT400 enclosed safety switch variants with different cable-entry configurations, handles, enclosure arrangements and accessory combinations. A product intended for a particular project or installation should not be assumed to have the same features as a visually similar standard model.
The product belongs to ABB's Metal Enclosed (Loadbreak) group, a range intended to provide industrial-grade enclosed switching solutions. For the OT400DLUU3TAY, the enclosure's precise ingress protection rating, construction details and cable-entry configuration should be checked against the individual Aylesford variant documentation before installation.
When selecting a 400 A safety switch, engineers should verify the relevant AC-21, AC-22 or AC-23 utilisation-category ratings, depending on the connected load. The current rating alone does not establish suitability for every switching duty, particularly where motors or other highly inductive equipment are involved.
The OT400DLUU3TAY is a switch disconnector rather than an automatic overcurrent protective device. It does not replace the need for appropriately selected circuit breakers, fuses or other protective equipment. Maintenance personnel must follow approved isolation procedures, including securing the supply against reconnection where required and verifying the absence of voltage before work begins.
Typical Applications
- 400 A industrial electrical isolation.
- Three-phase machinery and equipment switching.
- Industrial manufacturing plants.
- Processing and production facilities.
- Large motor and machinery installations, subject to confirmed switching ratings.
- Industrial pumps, fans and compressors.
- Conveyor and material handling systems.
- Electrical distribution and machinery supply circuits.
- Industrial control and power installations.
- OEM machinery and equipment manufacturing.
- Maintenance isolation points for industrial plant.
- Aylesford-specific installations requiring the exact ABB OT400DLUU3TAY product reference.
