Why Choose the ABB OTP45B3P 45A Plastic Enclosed Switch-Disconnector?
The ABB OTP45B3P (1SCA022383R2990) is a robust and reliable 45 A three-pole plastic enclosed switch-disconnector designed for local electrical isolation and manual ON/OFF switching in industrial machinery, commercial installations and electrical distribution systems. As part of the ABB OTP plastic enclosed switch series, it provides dependable isolation for three-phase electrical equipment and industrial control applications.
This enclosed switch features a black rectangular selector-type operating handle, a three-pole switching mechanism and a durable plastic enclosure. The handle provides clear ON/OFF position indication and supports padlocking in the OFF position, helping prevent unintended operation during machinery maintenance and electrical servicing.
The OTP45B3P features a 45 A AC-23A operational current rating at up to 500 V AC, with a separate AC-22A rating of 45 A at voltages up to 500 V AC. Its IP65-rated enclosure measures 200 × 145 × 90 mm and incorporates PG-threaded cable entry knockouts, making it suitable for surface mounting near industrial machinery, motors and electrical equipment.
Key Advantages
- Robust 45 A three-pole enclosed switch-disconnector for industrial electrical isolation.
- Three-pole switching configuration enables simultaneous disconnection of three phase conductors.
- 45 A AC-22A operational current rating for mixed resistive and inductive loads at up to 500 V AC.
- 45 A AC-23A operational current rating for suitable motor and highly inductive loads at up to 500 V AC.
- Black rectangular selector handle provides clear manual ON/OFF operation.
- Padlockable OFF position supports controlled isolation during maintenance.
- IP65-rated plastic enclosure provides protection against dust and water jets when correctly installed.
- PG-threaded cable entry knockouts offer flexible cable connection arrangements.
- Integrated neutral and protective earth terminals simplify installation in suitable three-phase systems.
- Surface-mounted construction allows convenient positioning near machinery and electrical equipment.
- Compact 200 × 145 × 90 mm enclosure provides a practical solution for local isolation points.
- Suitable for industrial machinery, motors, pumps, fans and electrical distribution equipment.
Key Features
- ABB OTP plastic enclosed switch-disconnector series.
- 45 A rated operational current under the specified AC-22A and AC-23A conditions.
- Three-pole (3P) main switching configuration.
- Manual I-O / ON-OFF switching operation.
- Black rectangular selector-type handle with position indication.
- Padlockable operating mechanism for maintenance isolation.
- IP65 enclosure protection rating when correctly installed.
- Durable plastic enclosure suitable for industrial environments.
- PG29 and PG11 threaded cable entry knockouts.
- Two PG29 and one PG11 cable entry provisions per side.
- Neutral and protective earth terminals included.
- Surface-mounted enclosure design for local electrical isolation.
- 200 mm enclosure height.
- 145 mm enclosure width.
- 90 mm enclosure depth.
- Approximately 0.9 kg product weight.
- Compatible compression cable glands can be selected separately for the required cable sizes.
Technical Specifications
- Manufacturer: ABB
- Series: OTP Plastic Enclosed Switch-Disconnectors
- Model: OTP45B3P
- ABB order code: OTP45B3P
- ABB product ID: 1SCA022383R2990
- ABB product group: 311004-Plastic Enclosed Switches (Otp)
- Product type: Plastic enclosed switch-disconnector
- Application: Local electrical isolation and manual load switching
- Rated operational current: 45 A
- Number of poles: 3
- Switching positions: I-O / ON-OFF
- Operating mechanism: Manual rotary selector
- Rated operational current AC-22A at up to 500 V AC: 45 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
- Handle type: Rectangular selector-type handle
- Handle colour: Black
- Handle position indication: I-O / ON-OFF
- Padlocking: OFF-position padlocking provision
- Enclosure material: Plastic
- Enclosure colour: Grey
- Enclosure protection rating: IP65
- Mounting type: Surface mounting
- Operating direction: Front operation
- Cable entry type: PG-threaded knockouts
- Cable entry configuration: 2 × PG29 + PG11 per side
- Cable entry positions: Top and bottom
- Compression cable glands: Ordered separately
- Neutral terminal: Included
- Protective earth terminal: Included
- Enclosure height: 200 mm
- Enclosure width: 145 mm
- Enclosure depth: 90 mm
- Dimensions (H × W × D): 200 × 145 × 90 mm
- Net weight: approx. 0.9 kg
- Applicable product standard: IEC 60947-3
Reliable Electrical Isolation for Industrial Machinery
Enclosed switch-disconnectors such as the ABB OTP45B3P provide a practical means of manually disconnecting electrical equipment from its power supply. The three-pole switching mechanism allows all three phase conductors to be disconnected together, supporting electrical isolation procedures during machinery maintenance, inspection and repair.
The black rectangular selector handle provides straightforward ON/OFF operation, allowing an operator to identify the selected switching position. The handle incorporates a padlocking provision for the OFF position, supporting maintenance procedures where equipment must remain isolated while authorised personnel carry out electrical or mechanical work.
The OTP45B3P is housed in a plastic enclosure with IP65 protection, helping protect the internal switching components against dust ingress and water jets. This makes it suitable for industrial environments where electrical isolation equipment may be exposed to dust, moisture or routine cleaning, provided the enclosure and cable entries are correctly installed and sealed.
Its PG-threaded cable entry arrangement provides flexibility when connecting incoming and outgoing cables. The enclosure includes provisions for two PG29 and one PG11 cable entries at both the top and bottom. Suitable compression cable glands must be selected separately to match the installation requirements and maintain the intended enclosure protection.
The integrated neutral and protective earth terminals simplify wiring arrangements for suitable three-phase electrical systems. The three main switching poles disconnect the phase conductors, while the neutral and protective earth connections are provided separately. The OTP45B3P is a switch-disconnector rather than a circuit breaker or overload relay, so appropriate upstream short-circuit and overload protection must be incorporated into the installation.
Typical Applications
- Local isolation of three-phase industrial machinery.
- Industrial motor and equipment isolation points.
- Conveyor and material handling systems.
- Pumps and pumping station equipment.
- Fans, ventilation and extraction systems.
- Manufacturing and production machinery.
- Packaging and processing equipment.
- Industrial electrical distribution installations.
- Commercial building services and plant rooms.
- Heating, ventilation and air conditioning equipment.
- Workshop machinery and maintenance isolation points.
- OEM machine building and industrial automation installations.
