Why Choose the ABB OTP75T4M 37kW 4-Pole IP65 Enclosed Switch Disconnector?
The ABB OTP75T4M (ABB product ID 1SCA022812R3010) is a robust 4-pole, 37 kW enclosed switch disconnector designed for reliable manual isolation and load switching in industrial and commercial low-voltage electrical installations. Part of the ABB OTP plastic enclosed safety switch range, it combines a durable grey enclosure, black operating handle, metric threaded cable entry knockouts and IP65 ingress protection in a complete industrial switching assembly.
Designed for demanding electrical applications, the OTP75T4M provides an 80 A AC-23A operational current rating at 415 V AC and a 37 kW AC-23A operational power rating at 415 V AC. Its four-pole construction enables simultaneous disconnection of four conductors, making it suitable for three-phase installations requiring switched-neutral isolation or other compatible four-pole switching arrangements.
The switch is housed in a UV-protected glass-reinforced polycarbonate enclosure measuring 400 × 200 × 140 mm (height × width × depth). It features top and bottom metric threaded knockouts, a padlockable black operating handle, an interlocked enclosure cover, protective earth terminals and a fixed neutral terminal. With one normally open auxiliary contact included, the ABB OTP75T4M provides a practical solution for industrial machinery isolation, electrical distribution and maintenance switching applications.
Key Advantages
- 37 kW AC-23A switching capability at 415 V AC for compatible industrial motor loads.
- Four-pole switching configuration enables simultaneous isolation of four electrical conductors.
- 80 A AC-23A operational current rating at 415 V AC supports demanding load-switching applications.
- IP65 enclosure protection helps prevent dust ingress and protects against water jets.
- UV-protected glass-reinforced polycarbonate housing provides durable, corrosion-resistant construction.
- Black padlockable operating handle supports controlled maintenance isolation procedures.
- Metric threaded cable entry knockouts simplify installation with suitable cable glands.
- Top and bottom cable entry provisions offer flexible cable routing.
- One normally open auxiliary contact included for switch-position signalling.
- Interlocked enclosure cover supports controlled access to internal electrical connections.
- Fixed neutral and protective earth terminals facilitate electrical installation.
- 400 × 200 × 140 mm enclosure provides space for high-current connections and cable termination.
- Suitable for industrial machinery, motor circuits and electrical distribution equipment.
- ABB enclosed switching technology provides dependable manual load-break operation and isolation.
Key Features
- ABB OTP75 enclosed safety switch series.
- Four mechanically linked switching poles.
- 37 kW AC-23A motor-load switching rating at 415 V AC.
- 80 A AC-23A operational current rating at 415 V AC.
- 37 kW AC-23A operational power rating at 690 V AC.
- 40 A AC-23A operational current rating at 690 V AC.
- IP65-rated plastic enclosure.
- Grey, UV-protected glass-reinforced polycarbonate construction.
- Black manual operating handle with I-O / ON-OFF indication.
- Padlocking provision for up to three padlocks.
- Interlocked cover with defeatable interlock facility.
- Metric threaded knockouts for power and control cables.
- 2 × M50 + M16 cable entry provisions at both the top and bottom.
- One normally open auxiliary contact supplied.
- Maximum auxiliary contact configuration of 2 NO + 2 NC.
- Fixed neutral terminal included.
- Protective earth terminals included.
- Screw-clamp electrical connections.
- 750 V AC rated operational voltage.
- Surface-mounted enclosure design for industrial installations.
- Designed for switching and isolation duties in accordance with the applicable IEC 60947 switch-disconnector standards.
Technical Specifications
- Manufacturer: ABB
- Series: OTP Enclosed Switch Disconnectors
- Model: OTP75T4M
- ABB order code: OTP75T4M
- ABB product ID: 1SCA022812R3010
- Product group: 311004 – Plastic Enclosed Switches (OTP)
- Product type: Plastic enclosed safety switch / switch disconnector
- Number of poles: 4
- Operating positions: I-O / ON-OFF
- Operating mechanism: Manual
- Handle colour: Black
- Handle arrangement: Padlockable
- Enclosure material: Glass-reinforced polycarbonate
- Enclosure colour: Grey
- UV protection: Yes
- Ingress protection: IP65
- Rated operational voltage: 750 V AC
- AC-23A operational current at 415 V AC: 80 A
- AC-23A operational current at 690 V AC: 40 A
- AC-23A operational power at 230 V AC: 22 kW
- AC-23A operational power at 415 V AC: 37 kW
- AC-23A operational power at 500 V AC: 37 kW
- AC-23A operational power at 690 V AC: 37 kW
- Rated continuous current: 115 A
- Rated short-time withstand current: 2.5 kA
- Switching function: Load-break switching and electrical isolation
- Main circuit connection: Screw-clamp terminals
- Cable entry configuration: Metric threaded knockouts
- Cable entry positions: Top and bottom
- Cable entry provisions: 2 × M50 + M16 per side
- Cable gland arrangement: Compression glands ordered separately
- Neutral terminal: Fixed neutral terminal included
- Protective earth terminals: Included
- Cover arrangement: Interlocked with defeatable interlock
- Padlocking facility: Up to 3 padlocks
- Auxiliary contacts included: 1 NO
- Maximum auxiliary contact configuration: 2 NO + 2 NC
- Enclosure height: 400 mm
- Enclosure width: 200 mm
- Enclosure depth: 140 mm
- Net weight: 2.5 kg
- Mounting arrangement: Enclosed surface-mounted assembly
- Country of origin: Finland
- GTIN / EAN: 6417019274461
- Applicable product standards: IEC 60947-1 and IEC 60947-3
- Ingress protection standard: IEC 60529
Reliable Four-Pole Electrical Isolation for Industrial Motors and Machinery
The ABB OTP75T4M provides a dependable method of manually disconnecting industrial electrical equipment from its power supply. Its four mechanically linked main poles open together when the operating handle is moved to the OFF position, allowing simultaneous isolation of four conductors. This makes the switch suitable for three-phase installations requiring a switched neutral or other compatible four-pole isolation arrangements.
The switch is designed for AC-23A motor-load switching duties within its rated electrical limits. At 415 V AC, it provides an 80 A operational current rating and a 37 kW operational power rating. These ratings make it suitable for industrial machinery, motors, fans, pumps and other equipment requiring a dedicated local disconnecting point. Actual suitability depends on the supply voltage, motor characteristics, operating duty and protection arrangements.
The IP65 glass-reinforced polycarbonate enclosure provides robust environmental protection against dust and water jets when correctly installed. Its UV-protected construction supports use in industrial environments where exposure to sunlight and moisture may occur. The grey enclosure is suitable for installation near machinery, on walls or within appropriately designed industrial electrical installations.
A distinguishing feature of the OTP75T4M is its metric threaded cable entry arrangement. The enclosure provides two M50 power cable entry provisions and one M16 control cable entry provision at both the top and bottom. This arrangement supports flexible routing of larger power cables and smaller auxiliary control wiring. Suitable compression glands must be selected and installed separately to maintain the enclosure's IP65 rating.
The black padlockable operating handle supports safe maintenance practices by allowing the switch to be secured in the OFF position. The enclosure cover is interlocked with the switching mechanism, restricting normal access while the switch is ON. A defeatable interlock facility is provided for authorised personnel following appropriate electrical safety procedures.
The OTP75T4M is supplied with one normally open auxiliary contact, enabling basic switch-position signalling to a compatible control circuit or monitoring system. Additional compatible auxiliary contacts may be fitted within the manufacturer's specified configuration limits. Fixed neutral and protective earth terminals are also provided for electrical installation convenience.
As a switch disconnector, the OTP75T4M provides manual switching and electrical isolation rather than automatic overload or short-circuit protection. Appropriate protective devices must therefore be selected and installed separately according to the electrical installation requirements.
Typical Applications
- Industrial motor isolation and local disconnecting points.
- Four-pole isolation in three-phase electrical systems.
- Industrial machinery and manufacturing 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 distribution.
- Electrical installations requiring switched-neutral isolation.
- Local maintenance isolation switches.
- Machine-mounted electrical disconnectors.
- OEM machinery and industrial electrical panel manufacturing.
- Indoor and appropriately installed outdoor industrial applications.
