Why Choose the ABB OTP75A6M 37kW 6-Pole IP65 Enclosed Safety Switch?
The ABB OTP75A6M, manufacturer order number 1SCA022812R3940, is a heavy-duty six-pole plastic enclosed safety switch designed for dependable manual switching and electrical isolation in industrial and commercial installations. Part of the ABB OTP enclosed safety switch range, it combines a six-pole switch disconnector, an IP65 protective enclosure and a distinctive red/yellow operating handle in a complete assembly suitable for installation close to machinery and electrical equipment.
With a 37 kW AC-23A motor switching rating at 415 V AC and a rated operational current of 80 A at 415 V AC under AC-23A conditions, the OTP75A6M is designed for demanding motor isolation duties. Its six-pole configuration enables six conductors to be switched together, making it useful for installations requiring more switched poles than a conventional three-pole isolator. The switch is also specified for 37 kW motor switching at 690 V AC, subject to the corresponding electrical ratings and installation requirements.
The OTP75A6M features a red/yellow pistol-type operating handle, a cover interlock, a padlockable OFF position and an included 1 NO auxiliary contact. Its rigid, glass-fibre-reinforced polycarbonate enclosure provides IP65 protection and incorporates threaded metric cable-entry knockouts for power and control cables. Fixed neutral and protective earth terminals are also included, making this ABB enclosed switch a practical choice for industrial machinery, maintenance isolation and equipment installations.
Key Advantages
- Six-pole switching arrangement allows simultaneous disconnection of six electrical conductors.
- 37 kW AC-23A motor switching capacity at 415 V AC for appropriately rated industrial motor circuits.
- 80 A AC-23A operational current rating at 415 V AC for motor and highly inductive switching duties.
- IP65-rated enclosure provides protection against dust ingress and water jets.
- Red/yellow pistol handle provides clear visual identification of the isolation control.
- Padlockable OFF position accommodates up to three padlocks for controlled maintenance isolation.
- Interlocked enclosure cover helps restrict access while the switch is ON.
- Defeatable cover interlock permits authorised access in accordance with safe working procedures.
- One normally open auxiliary contact included for supplementary indication or control functions.
- Metric cable-entry knockouts provide convenient top and bottom cable routing.
- UV-protected polycarbonate enclosure supports indoor and appropriately assessed outdoor installations.
- Fixed neutral and protective earth terminals simplify associated conductor termination.
- ABB OTP safety switch construction provides a complete enclosed solution for machinery isolation.
Key Features
- Manufacturer: ABB.
- Product model: OTP75A6M.
- Manufacturer order number: 1SCA022812R3940.
- Product family: OTP Plastic Enclosed Safety Switches.
- Product type: Enclosed safety switch / switch disconnector.
- Number of switched poles: 6.
- Motor switching rating at 415 V AC: 37 kW, AC-23A.
- Motor switching rating at 690 V AC: 37 kW, AC-23A.
- Rated operational current at 415 V AC: 80 A, AC-23A.
- Enclosure ingress protection: IP65.
- Enclosure material: Glass-fibre-reinforced polycarbonate.
- Enclosure colour: Grey.
- Operating handle: Red/yellow pistol-type handle.
- Handle indication: I–0 / ON–OFF.
- Handle locking: Padlockable in OFF position.
- Maximum padlocks: 3.
- Cover interlock: Included, with defeatable interlocking.
- Cable-entry arrangement: 2 × M50 + M16 at the top and bottom.
- Auxiliary contacts supplied: 1 NO.
- Maximum auxiliary contact configuration: 2 NO + 2 NC.
- Neutral terminal: Fixed neutral terminal included.
- Protective earth terminal: Included.
- Mounting arrangement: Surface mounting.
Technical Specifications
- Manufacturer: ABB
- Model: OTP75A6M
- Manufacturer order number: 1SCA022812R3940
- ABB product group: 311004 – Plastic Enclosed Switches (OTP)
- Product description: 6-pole, 37 kW, IP65 plastic enclosed safety switch with red/yellow handle
- Product category: Enclosed safety switches and switch disconnectors
- Product series: ABB OTP
- Number of switched poles: 6
- Rated operational current (AC-23A, 415 V AC): 80 A
- Maximum motor output (AC-23A, 230 V AC): 22 kW
- Maximum motor output (AC-23A, 400–415 V AC): 37 kW
- Maximum motor output (AC-23A, 500 V AC): 37 kW
- Maximum motor output (AC-23A, 690 V AC): 37 kW
- Utilisation category: AC-23A motor and highly inductive load switching
- Switching function: Manual load switching and electrical isolation
- Enclosure protection rating: IP65
- Enclosure material: Rigid glass-fibre-reinforced polycarbonate
- Enclosure UV protection: UV-protected
- Enclosure colour: Grey
- Operating handle type: Pistol-type handle
- Handle colour: Red/yellow
- Operating positions: I–0 / ON–OFF
- Handle locking: Padlockable in OFF position
- Maximum number of padlocks: 3
- Cover interlocking: Included
- Interlock override: Defeatable by authorised personnel
- Operating arrangement: Front operated
- Mounting arrangement: Surface mounting
- Cable-entry positions: Top and bottom
- Cable-entry type: Threaded metric knockouts
- Cable-entry arrangement per side: 2 × M50 + M16
- Compression cable glands: Ordered separately
- Auxiliary contacts included: 1 NO + 0 NC
- Maximum auxiliary contacts: 2 NO + 2 NC
- Neutral terminal: Fixed neutral terminal included
- Protective earth terminal: Included
- Approximate unit weight: 3.2 kg
- Applicable product standard: IEC/EN 60947-3
Six-Pole Motor Isolation and Industrial Safety Switching
The ABB OTP75A6M is designed for local electrical isolation of industrial machinery and equipment. Its six-pole switching mechanism allows six conductors to be disconnected through a single operating handle. This provides flexibility for applications involving multiple three-phase circuits or other engineered switching arrangements where a conventional three-pole switch would not provide sufficient switched poles.
The switch's 37 kW AC-23A motor switching rating at 415 V AC makes it suitable for appropriately rated motor installations. ABB also specifies 37 kW AC-23A motor switching capability at 500 V and 690 V AC. AC-23A is a utilisation category covering motor loads and other highly inductive switching duties, so selection should always consider the connected equipment's operating voltage, load current and switching requirements.
The red/yellow pistol-type handle is clearly identifiable as a machinery isolation control and operates the switch from outside the enclosure. The handle can be secured in the OFF position using up to three padlocks, supporting maintenance isolation and lockout procedures. The enclosure cover is interlocked with the switch mechanism, while a defeatable interlock allows authorised personnel to access the enclosure when permitted by the manufacturer's instructions and applicable electrical safety procedures.
The IP65 plastic enclosure is manufactured from rigid, glass-fibre-reinforced polycarbonate and incorporates UV protection. This construction is suitable for industrial environments where dust, moisture and outdoor exposure must be considered. Top and bottom cable-entry arrangements provide two M50 threaded knockouts and one M16 knockout per side, accommodating appropriately selected power and control cable glands. Suitable compression glands must be purchased separately and correctly fitted to maintain the enclosure's ingress protection.
Unlike some basic enclosed switch disconnectors, the OTP75A6M is supplied with one normally open auxiliary contact. This can be used as part of an appropriately designed indication or control circuit, while the product also supports selected additional auxiliary contact configurations. Fixed neutral and protective earth terminals are included. The OTP75A6M is a manual switch disconnector rather than an automatic overcurrent protective device; suitable fuses, circuit breakers and other protective equipment must therefore be provided as required by the electrical installation.
Typical Applications
- Industrial machinery requiring six-pole electrical isolation.
- Local isolation of appropriately rated three-phase motor circuits.
- 37 kW motor applications at 415 V AC under AC-23A conditions.
- Manufacturing machinery and production equipment.
- Industrial pumps, fans and compressors.
- Conveyor systems and material handling machinery.
- Packaging equipment and automated production lines.
- Electrical installations requiring simultaneous switching of six conductors.
- Industrial control and power distribution equipment.
- HVAC plant and mechanical services machinery.
- OEM machinery and equipment manufacturing.
- Maintenance isolation points requiring a red/yellow padlockable safety switch.
