Why Choose the ABB OTP45B3M 3-Pole IP65 Enclosed Switch Disconnector?
The ABB OTP45B3M (ABB product ID 1SCA022383R3020) is a robust 3-pole enclosed switch disconnector designed for safe manual isolation and switching of industrial electrical equipment. Featuring a grey plastic enclosure, IP65 ingress protection and black rotary selector handle, this ABB OTP series switch provides a practical solution for machinery isolation, motor control and low-voltage electrical distribution.
Designed for industrial installations, the OTP45B3M offers a 45 A AC-23A operational current rating at 380–415 V AC and a 22 kW AC-23A operational power rating at 380–415 V AC. It also supports a 15 kW AC-23A operational power rating at 690 V AC. Its three-pole construction enables simultaneous disconnection of three-phase conductors, making it suitable for compatible industrial motors and machinery.
The switch is housed in a durable RAL 7035 grey plastic enclosure measuring 145 × 200 × 90 mm (width × height × depth). With IP65 dust and water protection, IK08 impact resistance, integrated neutral and protective earth terminals, and top and bottom cable entry provisions, the ABB OTP45B3M combines dependable electrical isolation with straightforward installation and maintenance.
Key Advantages
- Reliable three-phase electrical isolation for industrial machinery and distribution equipment.
- IP65-rated enclosure provides protection against dust ingress and water jets when correctly installed.
- Grey RAL 7035 plastic housing offers durable, corrosion-resistant construction.
- 45 A AC-23A switching capability at 380–415 V AC supports demanding motor-load applications.
- 22 kW AC-23A operational power rating at 380–415 V AC for suitable motor circuits.
- 15 kW AC-23A operational power rating at 690 V AC.
- Black rotary selector handle provides clear ON/OFF operation.
- Interlocked enclosure cover supports controlled access to internal electrical connections.
- IK08 impact resistance helps protect the enclosure against mechanical impacts.
- Integrated neutral and PE terminals simplify wiring arrangements.
- Top and bottom cable entries offer flexible installation options.
- Suitable for use as a local machine isolator in appropriately designed electrical installations.
Key Features
- ABB OTP45 enclosed switch-disconnector series.
- Three-pole switching arrangement.
- 45 A AC-23A rated operational current at 380–415 V AC.
- 63 A conventional enclosed thermal current.
- 22 kW AC-23A rated operational power at 380–415 V AC.
- 15 kW AC-23A rated operational power at 690 V AC.
- IP65 ingress protection according to IEC 60529.
- IK08 housing impact resistance.
- RAL 7035 grey plastic enclosure.
- Black selector-type operating handle with I-O / ON-OFF indication.
- Cover interlocking arrangement with defeatable interlock facility.
- Three-phase disconnection through mechanically linked main contacts.
- Fixed neutral terminal supplied.
- Protective earth terminals supplied.
- Screw-clamp main circuit terminals.
- 1.5–35 mm² conductor connection capacity.
- 2 × M32 + M16 threaded cable entry provisions per side at the top and bottom.
- Provision for up to 2 NO + 2 NC auxiliary contacts using compatible accessories.
- IEC 60947-1 and IEC 60947-3 product standards.
Technical Specifications
- Manufacturer: ABB
- Series: OTP45 Enclosed Switch Disconnectors
- Model: OTP45B3M
- ABB order code: OTP45B3M
- ABB product ID: 1SCA022383R3020
- Product group: 311004 – Plastic Enclosed Switches (OTP)
- Product type: Enclosed switch disconnector
- Number of poles: 3
- Switching positions: I-O / ON-OFF
- Operating mechanism: Manual rotary selector
- Handle type: Selector handle
- Handle colour: Black
- Enclosure material: Plastic
- Enclosure colour: RAL 7035 grey
- Ingress protection: IP65
- Impact resistance: IK08
- Conventional enclosed thermal current (Ithe): 63 A
- Rated operational current AC-21A at 380–415 V AC: 63 A
- Rated operational current AC-21A at 500 V AC: 63 A
- Rated operational current AC-21A at 690 V AC: 63 A
- Rated operational current AC-22A at 380–415 V AC: 63 A
- Rated operational current AC-22A at 690 V AC: 63 A
- Rated operational current AC-23A at 380–415 V AC: 45 A
- Rated operational current AC-23A at 500 V AC: 45 A
- Rated operational current AC-23A at 690 V AC: 20 A
- Rated operational power AC-23A at 380–415 V AC: 22 kW
- Rated operational power AC-23A at 500 V AC: 22 kW
- Rated operational power AC-23A at 690 V AC: 15 kW
- Rated operational voltage: 750 V
- Rated insulation voltage (Ui): 750 V
- Rated impulse withstand voltage (Uimp): 1 kV
- Rated short-time withstand current (Icw): 1 kA for 1 s
- Rated short-circuit making capacity (Icm) at 690 V AC: 1.4 kA
- Main circuit connection: Screw-clamp terminals
- Conductor connection capacity: 1.5–35 mm²
- Main circuit tightening torque: 2 N·m
- Wire stripping length: 13 mm
- Recommended screwdriver: Pozidriv 2
- Cable entry positions: Top and bottom
- Cable entry provisions: 2 × M32 + M16 per side
- Neutral arrangement: Fixed neutral terminal
- Protective earth arrangement: PE terminals included
- Auxiliary contacts fitted: 0 NO + 0 NC
- Maximum compatible auxiliary contacts: 2 NO + 2 NC
- Enclosure width: 145 mm
- Enclosure height: 200 mm
- Enclosure depth: 90 mm
- Approximate net weight: 0.9 kg
- Power loss at rated conditions: 1.5 W per pole
- Pollution degree: 3
- Applicable standards: IEC 60947-1 and IEC 60947-3
- GTIN / EAN: 6417019124933
Reliable Three-Phase Isolation for Industrial Machinery
The ABB OTP45B3M provides a dependable means of manually disconnecting three-phase electrical equipment from its power supply. When the selector handle is moved to the OFF position, the switch opens its three main contacts, providing an isolation function for appropriately designed circuits. The clearly marked I-O positions help operators identify the selected switching state.
The AC-23A utilisation rating makes the OTP45B3M suitable for switching motor loads within its specified electrical ratings. This is particularly useful in installations requiring a local isolator near a motor, conveyor, pump, fan or industrial machine. The switch must be coordinated with suitable overload and short-circuit protection, as it is a switch disconnector rather than a circuit breaker or motor protection relay.
The IP65 plastic enclosure provides protection against dust and water jets, making the switch suitable for many industrial locations where enclosed electrical equipment is required. Its IK08 impact resistance further supports use in environments where equipment may experience incidental mechanical impacts. The black selector handle provides a clear manual operating interface, while the enclosure's interlocking arrangement supports controlled access during installation and maintenance.
Installation flexibility is enhanced by the top and bottom threaded cable entry provisions, integrated neutral and earth terminals, and screw-clamp electrical connections. The enclosure's compact dimensions make it practical for wall or machine mounting where a dedicated local isolation point is required. Correct cable glands, mounting methods and installation procedures are necessary to maintain the enclosure's environmental protection.
Typical Applications
- Industrial motor isolation and local disconnecting points.
- Three-phase machinery and production equipment.
- Conveyor and material handling systems.
- Industrial pumps and pumping stations.
- Ventilation fans and HVAC equipment.
- Compressors and auxiliary plant machinery.
- Packaging and processing equipment.
- Manufacturing and assembly lines.
- Commercial and industrial electrical installations.
- Machine-mounted electrical isolation switches.
- OEM machinery and electrical panel manufacturing.
- General-purpose enclosed load-break switching applications.
