Why Choose the ABB OTP16HT3M1 7.5 kW Enclosed Safety Switch?
The ABB OTP16HT3M1 (manufacturer order code 1SCA022400R9320) is a robust three-pole enclosed safety switch disconnector designed for reliable electrical isolation of industrial machinery, motors and electrical equipment. As part of the ABB OTP plastic enclosed safety switch series, it combines dependable manual switching with a durable, weather-resistant enclosure suitable for indoor and outdoor industrial installations.
This safety switch features a black selector handle, interlocked enclosure cover and padlockable OFF position, helping maintenance personnel isolate machinery before servicing or inspection. The enclosure is manufactured from rigid glass-fibre-reinforced polycarbonate, providing excellent mechanical durability, UV resistance and protection against environmental conditions. Its IP65 protection rating makes it suitable for installations exposed to dust and low-pressure water jets.
With a 16 A AC-23A operational current rating at 415 V AC and a 7.5 kW motor switching capacity at 400 V AC, the ABB OTP16HT3M1 is ideal for local isolation of three-phase motors, pumps, fans, conveyors and industrial machinery. The switch incorporates M20 threaded cable entries, fixed neutral and protective earth terminals, and a compact enclosed design that simplifies installation close to the equipment being controlled.
Key Advantages
- Reliable three-pole enclosed safety switch for industrial machinery isolation.
- 7.5 kW motor switching capacity at 400 V AC for industrial motor applications.
- 16 A AC-23A operational current rating for switching motor and other highly inductive loads.
- IP65-rated enclosure provides protection against dust and water jets.
- Black selector handle provides clear ON/OFF operation.
- Padlockable operating handle accommodates up to three padlocks for controlled maintenance isolation.
- Interlocked enclosure cover helps prevent access while the switch is in the ON position.
- UV-resistant glass-fibre-reinforced polycarbonate enclosure supports indoor and outdoor use.
- M20 threaded cable entries simplify connection to industrial wiring systems.
- Integrated fixed neutral and protective earth terminals support three-phase installations with neutral and earth conductors.
- Compact, wall-mounted construction enables convenient installation close to machinery.
- Supplied with two membrane cable glands and two pull stoppers.
Key Features
- ABB OTP plastic enclosed safety switch series.
- Manufacturer model: OTP16HT3M1.
- ABB order code: 1SCA022400R9320.
- Three-pole switch disconnector for three-phase electrical circuits.
- Rated operational current: 16 A at 415 V AC, AC-23.
- Rated motor switching power: 7.5 kW at 400 V AC, AC-23A.
- Rated insulation voltage: 750 V.
- IP65 enclosure protection for demanding industrial environments.
- Black rotary selector handle with ON/OFF indication.
- Padlockable OFF position with provision for three padlocks.
- Interlocked enclosure cover for improved operational safety.
- Grey, UV-resistant polycarbonate enclosure reinforced with glass fibre.
- M20 threaded cable entries at the top and bottom of the enclosure.
- Fixed neutral terminal for connection of the neutral conductor.
- Protective earth terminal for electrical earthing connections.
- Screw-type main circuit terminals for secure conductor connections.
- Wall or surface mounting for local equipment isolation.
- Suitable for indoor and outdoor industrial applications.
Technical Specifications
- Manufacturer: ABB
- Series: OTP Plastic Enclosed Safety Switches
- Model: OTP16HT3M1
- Manufacturer order code: 1SCA022400R9320
- ABB product group: 311004 – Plastic Enclosed Switches (OTP)
- Product type: Enclosed safety switch disconnector
- Product description: 7.5 kW three-pole plastic enclosed safety switch with black handle and metric threaded cable entries
- Number of poles: 3
- Rated operational current (AC-23, 415 V): 16 A
- Rated operational current (AC-23, 400 V): 16 A
- Rated operational current (AC-21, 400 V): 32 A
- Rated motor power (AC-23A, 230 V): 5.5 kW
- Rated motor power (AC-23A, 400 V): 7.5 kW
- Rated motor power (AC-23A, 500 V): 7.5 kW
- Rated motor power (AC-23A, 690 V): 7.5 kW
- Rated insulation voltage (Ui): 750 V
- Maximum rated operational voltage: 690 V AC
- Enclosure protection rating: IP65
- Enclosure material: Glass-fibre-reinforced polycarbonate
- Enclosure colour: Grey
- UV protection: UV-resistant enclosure
- Handle type: Rotary selector handle
- Handle colour: Black
- Handle operation: ON/OFF
- Handle locking: Padlockable OFF position
- Maximum number of padlocks: 3
- Cover interlocking: Interlocked enclosure cover
- Operating arrangement: Front operated
- Mounting type: Wall / surface mounting
- Cable entry type: Metric threaded entries
- Cable entry size: M20
- Cable entry arrangement: Top and bottom
- Cable outlets: 2 × M20 per side
- Main circuit connection: Screw terminals
- Neutral terminal: Fixed neutral terminal included
- Protective earth terminal: PE terminal included
- Auxiliary contacts included: None
- Maximum auxiliary contact configuration: 1 NO + 1 NC
- Membrane cable glands included: 2
- Pull stoppers included: 2
- Dimensions (H × W × D): approx. 120 × 85 × 60 mm
- Net weight: approx. 0.4 kg
- Applicable standard: IEC/EN 60947-3
- Country of origin: Finland
- EAN: 6417019130781
Reliable Electrical Isolation for Industrial Machinery
Enclosed safety switches such as the ABB OTP16HT3M1 provide a convenient means of disconnecting electrical power from industrial machinery and equipment. The three-pole switching mechanism allows all three phase conductors to be disconnected through a single manual operating action, supporting maintenance isolation and equipment servicing.
The 7.5 kW AC-23A motor switching rating at 400 V AC makes this model suitable for industrial motors and other demanding electrical loads within its specified ratings. The switch can be installed close to machinery, providing maintenance engineers and equipment operators with an accessible local isolation point.
The black selector handle provides clear ON/OFF operation and can be secured in the OFF position using up to three padlocks. This supports controlled maintenance isolation procedures and helps prevent unintended reconnection while electrical equipment is being serviced. The interlocked cover also helps restrict access to the internal switching components while the device is energised.
The enclosure is manufactured from glass-fibre-reinforced polycarbonate, combining mechanical strength with resistance to ultraviolet exposure and environmental conditions. Its IP65 rating provides protection against dust ingress and low-pressure water jets, making it suitable for a wide range of indoor and outdoor industrial environments when correctly installed.
The OTP16HT3M1 is designed for straightforward installation, with M20 threaded cable entries at both the top and bottom and fixed neutral and protective earth terminals. The neutral terminal is provided for conductor termination rather than as an additional switched pole. The supplied membrane glands and pull stoppers help simplify cable entry preparation and enclosure installation.
Typical Applications
- Local isolation of three-phase industrial motors.
- Industrial machinery maintenance and servicing.
- Pumps, fans and ventilation equipment.
- Conveyor systems and material handling machinery.
- Manufacturing and production equipment.
- Industrial compressors and mechanical plant.
- HVAC machinery and building services equipment.
- Packaging machinery and automated production lines.
- Outdoor machinery and industrial equipment installations.
- Industrial process control and electrical distribution systems.
- OEM machinery and electrical panel-building applications.
- Equipment requiring a padlockable local electrical isolator.
