Why Choose the ABB OTP75T3B 37 kW 3-Pole IP65 Plastic Enclosed Switch-Disconnector?
The ABB OTP75T3B (1SCA022371R2910) is a robust three-pole plastic enclosed switch-disconnector designed for reliable electrical isolation and load switching in industrial and commercial installations. Part of ABB's OTP enclosed safety switch range, it combines a 37 kW motor switching rating at 400 V AC, IP65 ingress protection and convenient Type I flange cable entry provisions.
The OTP75T3B offers an 80 A AC-23A operational current rating at 380–415 V AC and a 100 A AC-22A operational current rating across its specified voltage range. Its three-pole configuration makes it suitable for appropriately rated three-phase machinery, motor circuits, pumps, fans and industrial electrical equipment.
Housed in a durable UV-protected, glass-reinforced polycarbonate enclosure, the switch provides IP65 protection and IK08 impact resistance. It features a black selector-type operating handle, an interlocked cover, a padlockable OFF position, and top and bottom I-flange cable entry provisions. The assembly includes one normally open auxiliary contact, a fixed neutral terminal and a protective earth terminal.
Key Advantages
- 37 kW motor switching capability at 400 V AC for suitable industrial applications.
- Three-pole switching configuration enables simultaneous disconnection of three conductors.
- 80 A AC-23A operational current at 380–415 V AC for appropriate motor and inductive-load switching.
- 100 A AC-22A operational current for suitable mixed resistive and inductive loads.
- IP65-rated enclosure provides dust-tight protection and resistance to water jets.
- IK08 impact resistance supports installation in demanding industrial environments.
- Type I flange cable entries offer flexible cable routing from the top or bottom.
- UV-protected glass-reinforced polycarbonate enclosure provides durable non-metallic construction.
- Black selector operating handle provides straightforward manual ON/OFF control.
- Padlockable OFF position supports controlled maintenance isolation procedures.
- Interlocked enclosure cover helps control access to the switching mechanism.
- One normally open auxiliary contact included for suitable indication or control applications.
- Fixed neutral and protective earth terminals simplify appropriate wiring arrangements.
- Suitable for industrial machinery, motor installations and electrical distribution equipment.
Key Features
- ABB OTP75T3B enclosed switch-disconnector.
- Three-pole manual switching mechanism.
- 37 kW AC-23A operational power at 380–415 V AC.
- 80 A AC-23A operational current at 380–415 V AC.
- 100 A AC-22A operational current at 380–690 V AC.
- 115 A conventional thermal current when fully enclosed.
- IP65 enclosure protection.
- IK08 impact resistance.
- Black selector-type operating handle.
- Manual I–0 / ON–OFF operation.
- Padlockable operating handle with provision for three padlocks.
- Interlocked cover with defeatable interlock function.
- Type I flange cable entry provisions at the top and bottom.
- One normally open auxiliary contact fitted.
- Maximum auxiliary contact configuration: 2 NO + 2 NC.
- Fixed neutral terminal and PE terminal included.
- Screw-clamp main terminals for 10–70 mm² conductors.
- Enclosure dimensions: 400 × 200 × 140 mm.
- Designed for fixed industrial electrical installation.
Technical Specifications
- Manufacturer: ABB
- Series: OTP Enclosed Switch-Disconnectors
- Model: OTP75T3B
- ABB order code: OTP75T3B
- ABB product ID: 1SCA022371R2910
- EAN: 6417019119496
- Product type: Plastic enclosed switch-disconnector
- Number of poles: 3
- Rated operational power AC-23A at 230 V AC: 22 kW
- Rated operational power AC-23A at 380–415 V AC: 37 kW
- Rated operational power AC-23A at 500 V AC: 37 kW
- Rated operational power AC-23A at 690 V AC: 37 kW
- Rated operational current AC-22A at 380–415 V AC: 100 A
- Rated operational current AC-22A at 500 V AC: 100 A
- Rated operational current AC-22A at 690 V AC: 100 A
- Rated operational current AC-23A at 380–415 V AC: 80 A
- Rated operational current AC-23A at 500 V AC: 60 A
- Rated operational current AC-23A at 690 V AC: 40 A
- Conventional thermal current (Ithe): 115 A, fully enclosed
- Rated insulation voltage (Ui): 750 V
- Rated short-time withstand current (Icw): 2.5 kA
- Enclosure material: UV-protected glass-reinforced polycarbonate
- Enclosure colour: Grey
- Enclosure protection rating: IP65
- Impact resistance: IK08
- Operating handle type: Selector handle
- Operating handle colour: Black
- Operating positions: I–0 / ON–OFF
- Padlocking: Provision for three padlocks
- Cover interlocking: Interlocked cover with defeatable interlock
- Cable entry arrangement: Type I flange
- Cable entry positions: Top and bottom
- Cable entry flanges: Ordered separately
- Main terminal type: Screw clamp
- Conductor connection capacity: 10–70 mm²
- Auxiliary contacts fitted: 1 NO + 0 NC
- Maximum auxiliary contacts: 2 NO + 2 NC
- Neutral arrangement: Fixed neutral terminal
- Protective earth connection: PE terminal included
- Enclosure height: 400 mm
- Enclosure width: 200 mm
- Enclosure depth: 140 mm
- Catalogue weight: Approximately 2.4 kg
- Installation type: Fixed mounting
- Product category: Plastic Enclosed Switches (OTP)
Reliable Three-Pole Motor Isolation with IP65 Protection and I-Flange Cable Entries
The ABB OTP75T3B provides dependable manual switching and isolation for three-phase electrical installations. Its three-pole mechanism operates all three switched conductors together, making it suitable for industrial machinery and motor applications requiring a clearly identifiable local isolation point. With a 37 kW AC-23A operational power rating at 400 V AC and an 80 A AC-23A operational current rating, it supports appropriately rated motor and inductive-load switching.
The IP65 plastic enclosure protects the internal switching mechanism against dust and water jets when correctly installed. Its UV-protected glass-reinforced polycarbonate construction and IK08 impact resistance support use in suitable indoor and outdoor industrial environments. The Type I flange entry provisions allow compatible cable entry accessories to be fitted at the top or bottom of the enclosure.
The black selector handle is padlockable for controlled isolation, while the interlocked cover provides an additional operational safeguard. An included normally open auxiliary contact can be used for suitable switch-position indication or control functions. Electrical designers should confirm the applicable current rating, switching duty, cable sizing, protective device coordination and installation requirements before commissioning.
Typical Applications
- Industrial three-phase motor isolation.
- Manufacturing machinery and production equipment.
- Pump and fan electrical isolation.
- Conveyor and material handling systems.
- Industrial ventilation and air handling equipment.
- Commercial building mechanical plant.
- Industrial electrical distribution systems.
- Local maintenance isolation points.
- Electrical installations requiring IP65 enclosed switching.
- Machinery installations requiring Type I flange cable entries.
- OEM industrial equipment assemblies.
- Indoor and suitable outdoor industrial electrical installations.
