Why Choose the ABB OT630KLAA4B 630 A 4-Pole IP54 Steel Enclosed Switch-Disconnector?
The ABB OT630KLAA4B (1SCA022341R1710) is a heavy-duty 630 A, four-pole steel enclosed switch-disconnector designed for dependable manual electrical isolation and load switching in industrial and commercial power distribution installations. Part of ABB's OT enclosed switch range, it combines a high-current switching assembly with a robust IP54-rated steel enclosure and open top and bottom cable entry provisions.
The OT630KLAA4B provides a 570 A AC-22A operational current rating at 690 V AC and a 570 A AC-23A operational current rating at 415 V AC. Its four-pole configuration allows four conductors to be switched together, making it suitable for appropriately designed three-phase distribution systems where neutral switching is required.
Supplied with a black pistol-grip operating handle, neutral and protective earth terminals, the OT630KLAA4B offers a practical enclosed isolation solution for industrial installations. The 1000 × 400 × 230 mm steel enclosure features open top and bottom cable entry areas, with compatible cable entry components and flanges selected separately to suit the installation.
Key Advantages
- 630 A nominal current rating for demanding industrial power distribution applications.
- Four-pole switching configuration enables simultaneous disconnection of four conductors.
- 570 A AC-23A operational current at 415 V AC supports appropriately rated industrial load-switching duties.
- 570 A AC-22A operational current at 690 V AC provides a defined switching capability for mixed resistive and inductive loads.
- IP54 steel enclosure provides protection against harmful dust ingress and splashing water when correctly assembled.
- Robust steel sheet construction protects the internal switch-disconnector assembly.
- Open top and bottom cable entries support flexible incoming and outgoing cable routing.
- Black pistol-grip handle provides clear manual ON/OFF operation.
- Neutral terminal included for suitable four-pole wiring arrangements.
- Protective earth terminal included for appropriate enclosure earthing.
- 1000 mm enclosure height provides space for the high-current switching assembly and cable connections.
- Separate cable entry accessories allow the installation to be configured for the required cable arrangement.
- Suitable for industrial electrical distribution, feeder isolation and machinery supply applications.
- Provides a dedicated local electrical isolation point for maintenance and operational switching.
Key Features
- ABB OT630KLAA4B enclosed switch-disconnector.
- 630 A nominal current rating.
- Four-pole switching mechanism.
- 570 A AC-22A operational current at 690 V AC.
- 570 A AC-23A operational current at 415 V AC.
- IP54-rated steel sheet enclosure.
- Manual I–0 / ON–OFF switching.
- Black pistol-grip operating handle.
- Open top cable entry.
- Open bottom cable entry.
- Neutral terminal included.
- Protective earth terminal included.
- Enclosure height: 1000 mm.
- Enclosure width: 400 mm.
- Enclosure depth: 230 mm.
- Catalogue weight: 30 kg.
- Cable entry components and flanges: Ordered separately.
- Suitable for fixed industrial electrical installations.
Technical Specifications
- Manufacturer: ABB
- Series: OT Enclosed Switch-Disconnectors
- Model: OT630KLAA4B
- ABB order code: OT630KLAA4B
- ABB product ID: 1SCA022341R1710
- Product type: Steel enclosed switch-disconnector
- Nominal current rating: 630 A
- Number of poles: 4
- Rated operational current AC-22A at 690 V AC: 570 A
- Rated operational current AC-23A at 415 V AC: 570 A
- Enclosure material: Steel sheet
- Enclosure protection rating: IP54
- Operating method: Manual
- Operating handle: Pistol-grip handle
- Operating handle colour: Black
- Operating positions: I–0 / ON–OFF
- Switching function: Load breaking and electrical isolation
- Top cable entry: Open
- Bottom cable entry: Open
- Cable entry arrangement: Provision for separately ordered cable entry components
- Compatible cable entry options: C-flange or ring-flange arrangements using suitable accessories
- Cable entry flanges: Ordered separately
- Neutral terminal: Included
- Protective earth terminal: Included
- Enclosure height: 1000 mm
- Enclosure width: 400 mm
- Enclosure depth: 230 mm
- Catalogue weight: 30 kg
- Installation type: Fixed mounting
- ABB product group: Metal Enclosed (Loadbreak)
- Product category: Metal Enclosed Switch-Disconnectors
Reliable 630 A Four-Pole Isolation with IP54 Steel Enclosure Protection
The ABB OT630KLAA4B provides a dedicated manual switching and isolation point for high-current electrical distribution circuits. Its four-pole mechanism operates the four switched conductors together, supporting installations where the electrical design requires three-phase and neutral disconnection. The switch has a 570 A AC-23A operational current rating at 415 V AC, with the applicable current determined by the circuit voltage, utilisation category and installation conditions.
The IP54 steel enclosure provides mechanical protection for the internal switching components and helps prevent harmful dust ingress and water splashing. Its open top and bottom cable entry areas accommodate separately selected cable entry arrangements. ABB specifies that suitable entry components are also used when fixing the enclosed switch assembly, making correct accessory selection important for the completed installation.
The supplied black pistol-grip handle provides manual I–0 / ON–OFF operation. Neutral and protective earth terminals are included to support appropriate electrical connections. The completed installation must maintain the required enclosure protection rating through correctly fitted cable entry components and suitable sealing.
As a non-fused switch-disconnector, the OT630KLAA4B provides manual switching and isolation rather than automatic overload or short-circuit protection. Appropriate protective devices must be selected separately, and the electrical designer should verify the switching duty, conductor sizing, fault protection and neutral isolation requirements before commissioning.
Typical Applications
- Industrial four-pole electrical isolation.
- High-current electrical feeder switching.
- Three-phase distribution systems requiring neutral switching.
- Industrial electrical distribution boards.
- Manufacturing and production facilities.
- Commercial building power distribution.
- Industrial machinery supply isolation.
- Large mechanical plant electrical installations.
- Industrial pump and ventilation systems.
- Electrical distribution and sub-distribution equipment.
- Local maintenance isolation points.
- Fixed industrial switchgear installations.
- Projects requiring open top and bottom cable entry arrangements.
- Industrial installations requiring IP54 steel enclosed switching.
