Why Choose the ABB OTP63BA4M 18.5kW Four-Pole IP65 Enclosed Switch-Disconnector?
The ABB OTP63BA4M is a heavy-duty four-pole plastic enclosed switch-disconnector designed for dependable electrical isolation and load switching in industrial and commercial installations. Featuring an IP65-rated enclosure and a distinctive red/yellow operating handle, it provides a practical local isolation solution for three-phase machinery, motors and electrical distribution equipment.
Part of the ABB OTP enclosed switch range, the OTP63BA4M combines a robust switching mechanism with a UV-protected, glass-fibre-reinforced polycarbonate enclosure. Its four-pole configuration supports installations requiring coordinated switching of three phase conductors and a neutral conductor, subject to the electrical system's design and earthing requirements.
The switch is specified with an 18.5 kW AC-23A motor rating at 690 V AC and a 37 kW AC-23A rating at 380–415 V AC. At 415 V AC, its rated AC-23A operational current is 75 A, while the conventional enclosed thermal current is 80 A.
With its padlockable red/yellow selector handle, interlocked cover, metric cable-entry knockouts and compact 200 × 145 × 90 mm enclosure, the OTP63BA4M is well suited to industrial machine building, electrical contracting and maintenance isolation applications.
Key Advantages
- Four-pole switching configuration for suitable three-phase and neutral isolation arrangements.
- 18.5 kW AC-23A motor rating at 690 V AC.
- 37 kW AC-23A motor rating at 380–415 V AC.
- 75 A AC-23A operational current at 380–415 V AC.
- 80 A conventional enclosed thermal current.
- IP65 enclosure protection against dust ingress and water jets.
- Red/yellow selector handle for highly visible local switching and isolation.
- Handle can be secured using up to three padlocks.
- Interlocked enclosure cover with defeatable interlocking for authorised servicing.
- UV-protected glass-fibre-reinforced polycarbonate enclosure.
- IK08 impact resistance for demanding industrial environments.
- Top and bottom metric cable-entry knockouts for flexible wiring.
- Compact construction suitable for mounting close to industrial equipment.
- Part of ABB's established OTP enclosed switch-disconnector family.
Key Features
- ABB OTP plastic enclosed switch-disconnector series.
- OTP63BA4M model designation.
- Four-pole (4P) switching arrangement.
- Manual ON/OFF operation.
- Red/yellow selector-type operating handle.
- Padlocking provision for up to three padlocks.
- Interlocked enclosure cover with defeatable interlocking.
- IP65 ingress protection rating.
- IK08 enclosure impact resistance.
- Grey, UV-protected, glass-reinforced polycarbonate housing.
- Metric threaded cable-entry knockouts.
- 2 × M32 + M16 cable-entry arrangement at the top and bottom.
- Screw-clamp terminals for conductors from 1.5–35 mm².
- Neutral and protective earth termination provision.
- No factory-mounted auxiliary contacts.
- Provision for compatible auxiliary contacts up to 2 NO + 2 NC.
- Suitable for fixed mounting within industrial electrical installations.
Technical Specifications
- Manufacturer: ABB
- Series: OTP Plastic Enclosed Switches
- Model: OTP63BA4M
- ABB order code: OTP63BA4M
- ABB manufacturer product ID: 1SCA022459R6940
- Product type: Plastic enclosed switch-disconnector
- Product group: 311004-Plastic Enclosed Switches (OTP)
- Number of poles: 4
- Pole configuration: 4P
- Rated operational power AC-23A at 380–415 V AC: 37 kW
- Rated operational power AC-23A at 500 V AC: 37 kW
- Rated operational power AC-23A at 690 V AC: 18.5 kW
- Rated operational current AC-23A at 380–415 V AC: 75 A
- Rated operational current AC-23A at 500 V AC: 58 A
- Rated operational current AC-23A at 690 V AC: 20 A
- Rated operational current AC-22A at 380–415 V AC: 80 A
- Rated operational current AC-22A at 690 V AC: 80 A
- Conventional enclosed thermal current: 80 A
- Rated operational voltage: 750 V AC
- Rated insulation voltage (Ui): 750 V
- Rated impulse withstand voltage (Uimp): 1.5 kV
- Rated short-time withstand current (Icw): 1.5 kA for 1 s
- Rated short-circuit making capacity (Icm): 2.1 kA at 690 V AC
- Ingress protection: IP65
- Impact resistance: IK08
- Enclosure material: Glass-fibre-reinforced polycarbonate plastic
- Enclosure colour: Grey, RAL 7035
- Handle colour: Red/yellow
- Handle type: Selector handle
- Operating positions: ON/OFF
- Handle locking: Up to three padlocks
- Cover interlock: Interlocked with defeatable interlocking
- Cable-entry positions: Top and bottom
- Cable-entry arrangement: 2 × M32 + M16 per side
- Main circuit connection: Screw-clamp terminals
- Conductor cross-section: 1.5–35 mm²
- Neutral arrangement: Fixed and switchable neutral provision
- Protective earth terminals: Included
- Factory-mounted auxiliary contacts: 0 NO + 0 NC
- Maximum auxiliary contact provision: 2 NO + 2 NC
- Power loss: 2.8 W per pole at rated operating conditions
- Enclosure height: 200 mm
- Enclosure width: 145 mm
- Enclosure depth: 90 mm
- Dimensions (H × W × D): 200 × 145 × 90 mm
- Net weight: Approximately 0.9 kg
- EAN / GTIN: 6417019143224
- Country of origin: Finland
- Applicable standards: IEC 60947-1 and IEC 60947-3
Reliable Four-Pole Isolation for Three-Phase Electrical Systems
The ABB OTP63BA4M provides a convenient local isolation point for industrial electrical equipment requiring four-pole switching. Its configuration is particularly relevant to suitable three-phase systems where a neutral conductor must also be disconnected as part of the isolation arrangement.
The switch uses a manually operated mechanical mechanism to provide clearly defined ON and OFF positions. Its red/yellow selector handle offers high visibility, while the padlocking provision supports controlled maintenance isolation procedures.
For motor and inductive-load applications, the electrical ratings must be selected according to the operating voltage and utilisation category. At 380–415 V AC, the OTP63BA4M has an AC-23A rating of 75 A and 37 kW. At 690 V AC, the corresponding ratings are 20 A and 18.5 kW.
The conventional enclosed thermal current of 80 A is a separate specification and must not be treated as interchangeable with the AC-23A motor-switching rating. Engineers should assess the connected load, duty cycle, protective-device coordination and installation conditions before selecting the switch.
The interlocked enclosure cover helps restrict access to the internal switching equipment, while the defeatable interlocking arrangement allows authorised maintenance personnel to access the enclosure when permitted by the manufacturer's instructions and safe working procedures.
IP65 Protection and Practical Cable Management
The OTP63BA4M incorporates a UV-protected glass-fibre-reinforced polycarbonate enclosure, providing a durable housing for industrial environments. Its IP65 rating offers dust-tight protection and resistance to water jets when the enclosure is correctly installed with suitable cable-entry components.
Top and bottom metric threaded knockouts provide a 2 × M32 + M16 cable-entry arrangement per side. This supports installation of power and control cables using appropriately selected glands, which must maintain the required enclosure protection.
The main screw-clamp terminals accept conductors from 1.5–35 mm². Neutral and protective earth termination facilities support practical installation in suitable low-voltage electrical systems.
The enclosure measures 200 × 145 × 90 mm, allowing installation near motors, pumps, conveyors and other machinery where a compact four-pole enclosed switch-disconnector is required.
Typical Applications
- Four-pole isolation of suitable three-phase electrical systems.
- Industrial motor and machinery isolation.
- Local safety switching for manufacturing equipment.
- Electrical installations requiring phase and neutral switching.
- Industrial pumping and ventilation systems.
- Conveyor and material handling machinery.
- Commercial and industrial electrical distribution installations.
- Food processing and packaging equipment.
- Outdoor electrical equipment requiring suitably installed IP65 protection.
- Industrial maintenance isolation points.
- OEM machinery and electrical equipment manufacturing.
- Electrical contracting and industrial panel building.
