Why Choose the ABB OTP45B4M 15kW 4-Pole IP65 Plastic Enclosed Switch?
The ABB OTP45B4M (1SCA022401R4750) is a robust four-pole plastic enclosed switch-disconnector designed for dependable local electrical isolation and manual load switching in industrial and commercial installations. Part of the ABB OTP enclosed switch range, it combines a durable enclosure, black selector handle and four-pole switching arrangement to provide a practical isolation solution for machinery, motors and electrical distribution equipment.
Specified as a 15 kW, four-pole, IP65 plastic enclosed switch, the OTP45B4M offers a rated operational current of 45 A in the AC-23A utilisation category at 380–415 V AC. ABB also specifies a switching power of 22 kW at 380–415 V AC and 15 kW at 690 V AC, making it important to select the device according to the actual supply voltage, load and utilisation category.
The switch is housed in a glass-fibre-reinforced plastic enclosure with an IP65 protection rating and a black, padlockable selector handle. With M32 and M16 threaded cable entry knockouts, integrated neutral and protective earth connection facilities, and an enclosure measuring 200 × 145 × 90 mm, the OTP45B4M is designed for convenient surface mounting close to electrical equipment requiring a clearly identifiable local isolation point.
Key Advantages
- Four-pole switch-disconnector for simultaneous switching of four conductors.
- 15 kW specified motor power capability, with voltage-dependent AC-23A ratings.
- 45 A AC-23A operational current at 380–415 V AC for suitable motor and inductive loads.
- 63 A AC-22A operational current at 380–415 V AC for appropriately rated mixed loads.
- IP65 plastic enclosure provides protection against dust ingress and water jets when correctly installed.
- Black selector-type handle provides straightforward manual ON/OFF operation.
- Padlockable OFF position supports controlled machinery isolation during maintenance.
- Cover interlocking mechanism helps restrict enclosure access while the switch is ON.
- Defeatable cover interlock supports authorised inspection procedures in accordance with ABB instructions.
- Glass-fibre-reinforced polycarbonate construction offers durability for demanding environments.
- Top and bottom cable entry provisions provide installation flexibility.
- Neutral and protective earth terminals support convenient wiring arrangements.
- Surface-mounted design makes the unit suitable for local installation near industrial equipment.
Key Features
- ABB OTP plastic enclosed switch-disconnector series.
- Four-pole (4P) switching configuration.
- 15 kW AC-23A switching power at 690 V AC.
- 22 kW AC-23A switching power at 380–415 V AC.
- 45 A AC-23A operational current at 380–415 V AC.
- 20 A AC-23A operational current at 690 V AC.
- 63 A AC-22A operational current at 380–415 V AC.
- 63 A conventional enclosed thermal current.
- Manual I-O / ON-OFF operation.
- Black selector handle with OFF-position padlocking.
- Interlocked enclosure cover with defeatable interlock function.
- IP65 enclosure protection in accordance with IEC 60529.
- IK08 enclosure impact resistance.
- Plastic enclosure with glass-fibre-reinforced construction.
- Two M32 and one M16 cable entry knockouts at both the top and bottom.
- Screw-clamp main circuit terminals.
- 1.5–35 mm² main circuit conductor connection capacity.
- Neutral and protective earth connection facilities.
- No auxiliary contacts fitted as standard.
- Provision for up to 2NO + 2NC auxiliary contacts using compatible accessories.
- Compact surface-mounted enclosure measuring 200 × 145 × 90 mm.
Technical Specifications
- Manufacturer: ABB
- Series: OTP Plastic Enclosed Switch-Disconnectors
- Model: OTP45B4M
- ABB order code: OTP45B4M
- ABB product ID: 1SCA022401R4750
- ABB product group: 311004-Plastic Enclosed Switches (Otp)
- Product type: Plastic enclosed switch-disconnector
- Specified power rating: 15 kW
- Number of poles: 4
- Switching positions: I-O / ON-OFF
- Operating mechanism: Manual rotary selector
- 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
- Conventional enclosed thermal current (Ithe): 63 A
- Rated operational voltage: 750 V
- Rated insulation voltage (Ui): 750 V
- Rated short-time withstand current (Icw): 1 kA for 1 s
- Rated short-circuit making capacity at 690 V AC: 1.4 kA
- Power loss per pole: 1.5 W at rated operating conditions
- Auxiliary contacts fitted: 0NO + 0NC
- Maximum auxiliary contact capacity: 2NO + 2NC
- Handle type: Selector handle
- Handle colour: Black
- Padlocking: OFF-position padlocking provision
- Cover interlock: Yes, with defeatable interlock function
- Enclosure material: Plastic, glass-fibre-reinforced polycarbonate construction
- Enclosure protection rating: IP65
- Enclosure impact resistance: IK08
- Mounting type: Surface mounting
- Operating direction: Front operation
- Cable entry positions: Top and bottom
- Cable entry type: Metric threaded knockouts
- Cable outlets per side: 2 × M32 + M16
- Compression cable glands: Ordered separately
- Main circuit terminal type: Screw clamp
- Main circuit conductor capacity: 1.5–35 mm²
- Neutral connection: Fixed neutral terminal provision
- Protective earth connection: PE terminals included
- Enclosure height: 200 mm
- Enclosure width: 145 mm
- Enclosure depth: 90 mm
- Dimensions (H × W × D): 200 × 145 × 90 mm
- Catalogue weight: approximately 1.0 kg
- EAN: 6417019131320
- Applicable standards: IEC 60947-1 and IEC 60947-3
Dependable Four-Pole Isolation for Industrial Electrical Equipment
The ABB OTP45B4M is designed to provide a clearly identifiable local isolation point for industrial electrical equipment. Its four-pole switching mechanism allows four conductors to be disconnected together, including a neutral conductor where required by the electrical installation design. This makes the switch particularly useful in three-phase systems where four-pole isolation is specified.
The black selector handle provides simple manual operation between the ON and OFF positions. Its padlocking facility helps prevent unintended re-energisation while authorised personnel perform maintenance. The enclosure also incorporates a cover interlock, with a defeatable function intended for authorised procedures carried out in accordance with the manufacturer's instructions.
The IP65-rated glass-fibre-reinforced plastic enclosure protects the internal switching assembly against dust and water jets when properly installed. Its compact dimensions allow the switch to be mounted close to motors, pumps, conveyors and other machinery, reducing the need for operators to return to a distant distribution board when local isolation is required.
The OTP45B4M provides metric cable entry knockouts at the top and bottom of the enclosure, with provision for two M32 entries and one M16 entry on each side. Suitable compression glands should be selected separately to suit the cables and maintain the enclosure's intended protection rating.
The switch is supplied without fitted auxiliary contacts, although compatible accessories can be added where control or indication functions are required. As a switch-disconnector rather than a circuit breaker, it must be used with correctly selected upstream overcurrent and short-circuit protection. The installation must also account for the different AC-21A, AC-22A and AC-23A current ratings applicable to the connected load.
Typical Applications
- Four-pole isolation of industrial electrical machinery.
- Three-phase motor and equipment isolation.
- Local isolation points in manufacturing facilities.
- Industrial pumps and pumping stations.
- Conveyor and material handling equipment.
- Fans, ventilation and extraction systems.
- Packaging and processing machinery.
- Industrial and commercial electrical distribution installations.
- Building services and plant room equipment.
- Heating, ventilation and air conditioning installations.
- Water treatment and process equipment.
- OEM machine building and electrical panel installations.
