Why Choose the ABB OTP45BA3P 3-Pole 45A Enclosed Safety Switch?
The ABB OTP45BA3P (1SCA022389R7180) is a robust 3-pole, 45 A plastic enclosed switch-disconnector designed for manual switching and electrical isolation in industrial machinery, motor installations and low-voltage electrical distribution systems. Part of the ABB OTP enclosed switch range, it combines a durable protective enclosure, a clearly identifiable red and yellow operating handle and dedicated PG-threaded cable-entry knockouts.
The OTP45BA3P provides a 45 A rated operational current under AC-23A conditions at up to 415 V AC, making it suitable for appropriately rated motor and inductive-load switching applications. It also offers a 63 A AC-22A operational current rating at up to 500 V AC for suitable mixed resistive and inductive loads. These utilisation-category ratings allow engineers to select the switch according to the characteristics of the connected electrical circuit.
Featuring an IP65-rated grey plastic enclosure, the OTP45BA3P is designed for demanding industrial environments where protection against dust and water ingress is important. Its red and yellow selector-type operating handle provides clear ON/OFF indication, while the integrated neutral and protective earth terminals simplify electrical installation. The enclosure includes 2 × Pg29 + Pg11 threaded knockouts for cable entry, with suitable compression glands ordered separately.
Key Advantages
- 3-pole enclosed switch-disconnector for reliable manual switching of three-phase electrical circuits.
- 45 A AC-23A operational current rating at up to 415 V AC.
- 63 A AC-22A operational current rating at up to 500 V AC.
- IP65 plastic enclosure provides protection against dust and water jets when correctly installed.
- Red and yellow operating handle provides clear identification of the electrical switching control.
- Selector-type rotary operation with visible I–O and ON–OFF position markings.
- PG-threaded cable-entry knockouts support suitable cable gland installations.
- 2 × Pg29 + Pg11 cable-entry configuration provides practical wiring flexibility.
- Neutral and protective earth terminals included for suitable electrical connection arrangements.
- Compact 200 × 145 × 90 mm enclosure supports installation in industrial environments.
- Complete enclosed assembly reduces the need to select a separate switch, enclosure and handle.
- Suitable for industrial motor isolation, machinery supply switching and electrical maintenance.
- Genuine ABB equipment designed for integration into appropriately rated low-voltage installations.
Key Features
- ABB OTP45BA3P plastic enclosed safety switch.
- ABB order code: OTP45BA3P.
- Manufacturer identification number: 1SCA022389R7180.
- Product series: ABB OTP.
- Number of main poles: 3.
- Rated operational current, AC-23A: 45 A at up to 415 V AC.
- Rated operational current, AC-23A at 500 V AC: 45 A.
- Rated operational current, AC-22A: 63 A at up to 500 V AC.
- Enclosure material: Plastic.
- Enclosure colour: Grey.
- Ingress protection: IP65.
- Handle type: Selector-type rotary operating handle.
- Handle colour: Red and yellow.
- Operating position indication: I–O / ON–OFF.
- Cable-entry type: PG-threaded knockouts.
- Cable-entry sizes: 2 × Pg29 + Pg11.
- Compression cable glands: Ordered separately.
- Neutral terminal: Included.
- Protective earth terminals: Included.
- Enclosure height: 200 mm.
- Enclosure width: 145 mm.
- Enclosure depth: 90 mm.
- Approximate product weight: 0.9–1.0 kg.
- Designed for manual electrical switching and isolation in compatible industrial installations.
Technical Specifications
- Manufacturer: ABB
- Series: OTP Plastic Enclosed Switches
- Model: OTP45BA3P
- Manufacturer part number: 1SCA022389R7180
- ABB order code: OTP45BA3P
- ABB product group: 311004 – Plastic Enclosed Switches (OTP)
- Product description: 3P 45A Plastic Enclosed Switch, Red/Yellow Handle, PG Thread
- Product type: Plastic enclosed switch-disconnector
- Number of poles: 3
- Switching operation: Manual rotary switching
- Rated operational current AC-22A at up to 500 V AC: 63 A
- Rated operational current AC-23A at up to 415 V AC: 45 A
- Rated operational current AC-23A at 500 V AC: 45 A
- Enclosure material: Plastic
- Enclosure colour: Grey
- Enclosure protection rating: IP65
- Operating handle: Selector-type rotary handle
- Handle colour: Red / yellow
- Position markings: I–O / ON–OFF
- Neutral terminals: Included
- Protective earth terminals: Included
- Cable-entry arrangement: Threaded knockouts
- PG cable-entry sizes: 2 × Pg29 + Pg11
- Cable-entry locations: Top and bottom
- Compression glands: Not included; order separately
- Enclosure width: 145 mm
- Enclosure height: 200 mm
- Enclosure depth: 90 mm
- Dimensions (H × W × D): 200 × 145 × 90 mm
- Approximate weight: 0.9–1.0 kg
- Installation: Enclosure mounting
- Primary application: Manual switching and electrical isolation
- Switching equipment category: Low-voltage switch-disconnector
Reliable Three-Phase Isolation with PG-Threaded Cable Entries
The ABB OTP45BA3P provides a practical means of manually switching and isolating three-phase electrical circuits. Its three-pole switching mechanism allows the main conductors to be disconnected together through a single external operating handle, supporting controlled electrical isolation during equipment maintenance and servicing.
The switch is specified for 45 A AC-23A operation at up to 415 V AC. AC-23A is a utilisation category associated with motor loads and other highly inductive circuits, while the 63 A AC-22A rating at up to 500 V AC applies to suitable mixed resistive and inductive loads. Selecting the correct rating requires consideration of the connected load, supply voltage and switching conditions.
A distinguishing feature of the OTP45BA3P is its PG-threaded cable-entry arrangement. The enclosure provides 2 × Pg29 + Pg11 knockouts, allowing appropriately selected cable glands to be fitted to the installation. Unlike the related OTP45BA3M variant, which uses metric cable-entry knockouts, the OTP45BA3P is intended for installations requiring PG-threaded entries.
The red and yellow selector-type handle provides a clear manual operating interface with ON/OFF position indication. Its highly visible colour combination helps operators identify the switching control, while the external mounting arrangement allows the electrical supply to be operated without routinely accessing the internal switching mechanism.
The IP65 grey plastic enclosure is designed to resist dust ingress and water jets when correctly installed. This makes the OTP45BA3P suitable for a range of industrial electrical environments, provided that the mounting arrangement, cable glands and complete installation preserve the required degree of protection.
The assembly includes neutral and protective earth terminals to support appropriate electrical connections. The neutral terminal is separate from the three main switched poles and should not be interpreted as a fourth switching pole.
The OTP45BA3P is a manual switch-disconnector rather than an automatic circuit breaker. It does not independently provide automatic overload or short-circuit tripping. Suitable protective devices and safe isolation procedures must therefore be incorporated into the complete electrical installation.
Typical Applications
- Industrial motor isolation: Providing local manual disconnection for suitably rated three-phase motor circuits.
- Machinery supply switching: Serving as an enclosed manual switching point for industrial equipment.
- Electrical maintenance: Supporting controlled isolation before servicing machinery and electrical installations.
- Industrial control systems: Providing a dedicated external switching interface for suitable electrical supplies.
- Manufacturing equipment: Isolating compatible production and processing machinery.
- Pumping installations: Providing manual switching and isolation for suitable pump motor circuits.
- Conveyor systems: Supporting local disconnection of appropriately rated conveyor equipment.
- Industrial ventilation: Providing enclosed switching for suitable fans and mechanical plant.
- Electrical distribution: Supporting manual switching of compatible low-voltage three-phase circuits.
- PG cable-entry installations: Providing a switch enclosure specifically configured for PG-threaded cable glands.
- OEM machinery: Integrating a complete enclosed switch-disconnector into new industrial equipment.
- Replacement installations: Replacing compatible ABB OTP switches where the electrical ratings, enclosure dimensions and cable-entry requirements match.
