Why Choose the ABB OT630KLAA3T 630 A 3-Pole IP54 Steel Enclosed Safety Switch?
The ABB OT630KLAA3T (1SCA022277R0140) is a heavy-duty 630 A, three-pole steel enclosed safety switch-disconnector designed for dependable manual load switching and electrical isolation in industrial and commercial power distribution systems. Part of ABB's OT enclosed safety switch range, it combines a high-capacity switching mechanism with a robust IP54-rated steel enclosure and open top and bottom cable entry arrangements.
Designed for demanding three-phase installations, the OT630KLAA3T provides a 570 A AC-23A operational current rating at 380–415 V AC and a 315 kW AC-23A motor switching rating at 400 V AC. Its three-pole switching configuration enables simultaneous disconnection of three phase conductors, making it suitable for appropriately rated industrial machinery, motor supplies and electrical distribution circuits.
The assembly features a black pistol-grip operating handle, two normally open and one normally closed auxiliary contacts, and a protective earth terminal. The steel enclosure measures 1000 × 400 × 230 mm and provides open cable entry arrangements at the top and bottom, allowing suitable installation-specific cable entry components to be selected.
Key Advantages
- 630 A nominal current rating for demanding industrial electrical installations.
- Three-pole switching enables simultaneous isolation of three phase conductors.
- 570 A AC-23A operational current at 380–415 V AC for suitable load-switching duties.
- 315 kW AC-23A motor switching capability at 400 V AC supports high-power industrial motor applications.
- IP54-rated steel enclosure provides protection against harmful dust ingress and splashing water.
- Robust steel sheet construction protects the internal switch-disconnector assembly.
- Open top and bottom cable entries provide flexibility for incoming and outgoing cable routing.
- Black pistol-grip handle provides straightforward manual ON/OFF operation.
- Two normally open auxiliary contacts support suitable control and indication circuits.
- One normally closed auxiliary contact provides an additional signalling or interlocking option.
- Protective earth terminal included for appropriate enclosure earthing.
- Top-in, bottom-out terminal arrangement supports organised power cable connections.
- 400 × 230 mm cable entry provision accommodates suitable cable entry accessories.
- Suitable for industrial distribution, machinery isolation and high-current switching applications.
- Part of ABB's established OT enclosed safety switch range.
Key Features
- ABB OT630KLAA3T enclosed safety switch-disconnector.
- 630 A nominal current rating.
- Three-pole switching mechanism.
- 570 A AC-23A operational current at 380–415 V AC.
- 315 kW AC-23A motor switching power at 400 V AC.
- IP54 steel sheet enclosure.
- Open top and bottom cable entry arrangement.
- Black pistol-grip operating handle.
- Manual I–0 / ON–OFF operation.
- Auxiliary contacts included: 2 NO + 1 NC.
- Protective earth terminal included.
- Top-in, bottom-out main terminal arrangement.
- AC-23A motor switching power: 180 kW at 230 V AC.
- AC-23A motor switching power: 400 kW at 500 V AC.
- AC-23A motor switching power: 560 kW at 690 V AC.
- Enclosure dimensions: 1000 × 400 × 230 mm.
- Product net weight: Approximately 27 kg.
- Designed for fixed industrial electrical installation.
Technical Specifications
- Manufacturer: ABB
- Series: OT Enclosed Safety Switches
- Model: OT630KLAA3T
- ABB order code: OT630KLAA3T
- ABB product ID: 1SCA022277R0140
- EAN: 6417019063621
- Product type: Steel enclosed safety switch-disconnector
- Nominal current rating: 630 A
- Number of poles: 3
- Conventional thermal current (Ithe), fully enclosed: 460 A
- Rated operational current AC-22A at 500 V AC: 570 A
- Rated operational current AC-22A at 690 V AC: 570 A
- Rated operational current AC-23A at 380–415 V AC: 570 A
- Rated operational current AC-23A at 500 V AC: 570 A
- Rated operational current AC-23A at 690 V AC: 570 A
- AC-23A operational power at 220–240 V AC: 180 kW
- AC-23A operational power at 400 V AC: 315 kW
- AC-23A operational power at 500 V AC: 400 kW
- AC-23A operational power at 690 V AC: 560 kW
- Rated operational voltage: Up to 1000 V AC
- Enclosure material: Steel sheet
- 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: 400 × 230 mm
- Main terminal arrangement: Top in, bottom out
- Protective earth terminal arrangement: Top in, bottom out
- Normally open auxiliary contacts included: 2 NO
- Normally closed auxiliary contacts included: 1 NC
- Auxiliary contact configuration: 2 NO + 1 NC
- Protective earth terminal: Included
- Enclosure height: 1000 mm
- Enclosure width: 400 mm
- Enclosure depth: 230 mm
- Product net weight: Approximately 27 kg
- Installation type: Fixed mounting
- ABB product group: Metal Enclosed (Loadbreak)
- Product category: Metal Enclosed Switch-Disconnectors
Reliable 630 A Three-Pole Isolation with IP54 Steel Enclosure Protection
The ABB OT630KLAA3T provides a dedicated manual switching and isolation point for high-current three-phase electrical circuits. Its three-pole switch-disconnector mechanism operates all three switched conductors together, supporting controlled disconnection of appropriately rated industrial loads. The assembly's 570 A AC-23A operational current rating at 380–415 V AC and 315 kW motor switching rating at 400 V AC make it suitable for substantial industrial motor and distribution applications.
The IP54 steel sheet enclosure provides mechanical protection and helps protect the internal switching equipment against dust and splashing water. Its open top and bottom cable entry arrangement allows installers to select suitable cable entry components for the required cable routing. The specified enclosure protection level must be maintained through correct installation and sealing of all cable entries.
The supplied black pistol-grip operating handle provides clear manual ON/OFF operation. The 2 NO + 1 NC auxiliary contacts can be incorporated into appropriately designed indication or electrical interlocking circuits, while the protective earth terminal supports correct earthing of the steel enclosure.
The OT630KLAA3T is a non-fused switch-disconnector and does not provide automatic overload or short-circuit protection. Suitable protective devices must be selected separately, and the circuit designer should verify the applicable operational current, utilisation category, conductor sizing and short-circuit coordination before installation.
Typical Applications
- Industrial three-phase electrical isolation.
- High-current industrial feeder switching.
- Manufacturing and production machinery.
- Large motor supply isolation within the applicable switching ratings.
- Industrial electrical distribution systems.
- Commercial and industrial building electrical plant.
- Industrial pumps, fans and mechanical equipment.
- Conveyor and material handling installations.
- Industrial process and automation equipment.
- Local maintenance isolation points.
- Electrical installations requiring auxiliary switch-position indication.
- Fixed steel enclosed switchgear installations.
- Projects requiring open top and bottom cable entry arrangements.
- Industrial installations requiring IP54 enclosure protection.
