Why Choose the ABB OT400DLAA6T 400 A 6-Pole IP54 Steel Enclosed Safety Switch?
The ABB OT400DLAA6T (1SCA022276R9720) is a heavy-duty 400 A, six-pole steel enclosed safety switch-disconnector designed for reliable manual load switching and electrical isolation in industrial power distribution and machinery installations. Part of ABB's OT enclosed safety switch range, it combines six-pole operation with a robust IP54-rated steel enclosure and open top and bottom cable entry arrangements.
Designed for applications requiring the simultaneous disconnection of six conductors, the OT400DLAA6T is suitable for complex industrial switching arrangements and equipment with multiple electrical circuits. ABB specifies AC-23A motor switching capabilities of 220 kW at 400 V AC, making this model suitable for appropriately rated industrial motor and inductive-load applications.
The switch is supplied with a black pistol-grip operating handle, protective earth terminal and four normally open plus two normally closed auxiliary contacts. Its open top and bottom configuration accommodates installation-specific cable entry arrangements, with suitable cable entry components and flanges ordered separately.
Key Advantages
- 400 A nominal current rating for demanding industrial electrical applications.
- Six-pole switching configuration enables simultaneous operation of six electrical conductors.
- 220 kW AC-23A motor switching capability at 400 V AC for appropriately rated loads.
- IP54 steel enclosure provides protection against harmful dust ingress and splashing water when correctly installed.
- Robust metal construction protects the internal switching mechanism.
- Open top and bottom cable entries provide flexibility for industrial cable routing.
- Black pistol-grip handle provides straightforward manual ON/OFF operation.
- Four normally open auxiliary contacts support suitable signalling and control arrangements.
- Two normally closed auxiliary contacts provide additional switching-state indication options.
- Protective earth terminal included for appropriate enclosure earthing.
- Suitable for industrial machinery, distribution systems and multi-conductor electrical installations.
- Enclosed switch-disconnector construction provides a dedicated local isolation point.
- ABB OT switching technology supports dependable operation in fixed industrial installations.
Key Features
- ABB OT400DLAA6T enclosed safety switch-disconnector.
- 400 A nominal current rating.
- Six-pole switching mechanism.
- IP54-rated steel enclosure.
- Open top and bottom cable entry arrangement.
- Black pistol-grip operating handle.
- Manual I–0 / ON–OFF switching.
- AC-23A motor switching power at 230 V AC: 110 kW.
- AC-23A motor switching power at 400 V AC: 220 kW.
- AC-23A motor switching power at 500 V AC: 280 kW.
- AC-23A motor switching power at 690 V AC: 355 kW.
- Auxiliary contacts included: 4 NO + 2 NC.
- Protective earth terminal included.
- Suitable cable entry opening: 800 × 230 mm.
- Catalogue weight: Approximately 37 kg.
- Cable entry components and flanges selected separately.
- Designed for fixed industrial electrical installation.
Technical Specifications
- Manufacturer: ABB
- Series: OT Enclosed Safety Switches
- Model: OT400DLAA6T
- ABB order code: OT400DLAA6T
- ABB product ID: 1SCA022276R9720
- Product type: Steel enclosed safety switch-disconnector
- Nominal current rating: 400 A
- Number of poles: 6
- Enclosure material: Steel sheet
- Enclosure colour: Grey
- Enclosure protection rating: IP54
- Operating handle: Pistol-grip handle
- Operating handle colour: Black
- Operating positions: I–0 / ON–OFF
- Operating principle: Manual switch-disconnector
- Top cable entry: Open
- Bottom cable entry: Open
- Suitable cable entry size: 800 × 230 mm
- Cable entry components and flanges: Ordered separately
- AC-23A maximum motor output at 230 V AC: 110 kW
- AC-23A maximum motor output at 400 V AC: 220 kW
- AC-23A maximum motor output at 500 V AC: 280 kW
- AC-23A maximum motor output at 690 V AC: 355 kW
- Normally open auxiliary contacts included: 4 NO
- Normally closed auxiliary contacts included: 2 NC
- Maximum auxiliary contact configuration: 4 NO + 2 NC
- Protective earth terminal: Included
- Catalogue weight: Approximately 37 kg
- Installation type: Fixed mounting
- ABB product group: Metal Enclosed (Loadbreak)
- Product category: Metal Enclosed Switch-Disconnectors
Reliable Six-Pole Isolation with High-Capacity Motor Switching
The ABB OT400DLAA6T provides simultaneous switching of six electrical conductors through a common manually operated switch-disconnector mechanism. Its 400 A nominal rating and substantial AC-23A motor switching capabilities make it suitable for appropriately designed industrial distribution and machinery applications where six-pole disconnection is required.
The steel enclosure provides mechanical protection for the internal switching equipment. Its IP54 protection rating applies when the completed enclosure installation is correctly assembled and sealed. Because the OT400DLAA6T features open top and bottom cable entry areas, suitable entry components, fixing profiles and cable sealing arrangements must be selected to preserve the required enclosure protection.
The included 4 NO + 2 NC auxiliary contact arrangement supports electrical indication and control functions associated with the switch position. A protective earth terminal is also supplied for appropriate earthing of the metal enclosure. The switch-disconnector itself does not provide automatic overload or short-circuit protection, so correctly coordinated protective devices must be included in the electrical installation.
Typical Applications
- Industrial six-pole electrical isolation.
- 400 A industrial feeder switching.
- Manufacturing and production machinery.
- Industrial motor supply switching within the applicable utilisation ratings.
- Multiple-circuit machinery isolation arrangements.
- Industrial electrical distribution systems.
- Large pump, fan and mechanical plant installations.
- Industrial process equipment.
- Electrical installations requiring auxiliary switch-position signalling.
- Fixed steel enclosed switchgear installations.
- Commercial and industrial building services.
- Projects requiring open top and bottom cable entry arrangements.
