1SCA152718R1001 ABB 16 A 4-Pole IP65 ATEX EMC Enclosed Switch-Disconnector

Why Choose the ABB OTA16S4BX 16 A ATEX EMC Enclosed Switch?

The ABB OTA16S4BX, order number 1SCA152718R1001, is a specialist 16 A, 4-pole ATEX EMC enclosed switch-disconnector designed for dependable load breaking and electrical isolation in potentially explosive industrial environments. It combines ABB switch-disconnector technology with a rigid die-cast aluminium enclosure, IP65 protection and a black I-O / ON-OFF operating handle.

Designed for four-pole electrical isolation, the OTA16S4BX provides an AC-23A operational rating of 16 A / 7.5 kW at 380–415 V. At 690 V, its AC-23A rating is 10 A / 7.5 kW. The four-pole arrangement enables four conductors to be switched simultaneously, making it suitable for applications where complete four-pole isolation is required.

The OTA16S4BX is designed in accordance with the ATEX framework for potentially explosive atmospheres and carries an Ex tc III T70°C Dc classification for Zone 22 applications. It is EMC approved and supplied with a 1NO auxiliary contact, PE terminal, threaded top and bottom cable entries, cable glands, cable-entry plugs and safety-switch identification.

Key Advantages

• 16 A, 4-pole ATEX enclosed switch-disconnector for hazardous-area applications.
• 7.5 kW / 16 A AC-23A rating at 380–415 V.
• 7.5 kW / 10 A AC-23A rating at 690 V.
• Four-pole configuration enables simultaneous switching of four conductors.
• Designed for ATEX Zone 22 combustible-dust environments.
• Ex tc III T70°C Dc hazardous-area classification.
• IP65 rigid die-cast aluminium enclosure.
• EMC approved for installations requiring electromagnetic compatibility.
• 1NO auxiliary contact included for signalling or control functions.
• Top and bottom cable entries provide flexible installation options.

Key Features

• ABB OTA16S4BX ATEX EMC enclosed switch-disconnector.
• 16 A equipment rating.
• 4-pole switching configuration.
• 16 A AC-22A operational current at 380–415 V, 500 V and 690 V.
• 16 A AC-23A operational current at 380–415 V and 500 V.
• 10 A AC-23A operational current at 690 V.
• 7.5 kW motor switching capability at 415 V and 690 V.
• IP65 protection rating.
• Rigid die-cast aluminium enclosure.
• ATEX Zone 22 application suitability.
• Ex tc III T70°C Dc classification.
• EMC approved construction.
• Black I-O / ON-OFF operating handle.
• Interlocked enclosure cover.
• 1NO auxiliary contact included.
• Maximum auxiliary-contact capacity of 2NO+2NC.
• PE terminal included.
• Threaded cable entries at the top and bottom.
• Cable glands and cable-entry plugs included.

Reliable Four-Pole ATEX Isolation

The ABB OTA16S4BX provides four-pole electrical isolation for installations where combustible dust can create a potentially explosive atmosphere. Its Ex tc III T70°C Dc classification supports use in Zone 22 applications, while the rigid aluminium enclosure provides IP65 protection for the enclosed switching mechanism.

The switch is also EMC approved and can be integrated into EMC-sensitive installations with suitable EMC cable glands. Threaded top and bottom cable entries provide flexible incoming and outgoing cable routing, while the interlocked cover, included auxiliary contact and clearly defined I-O / ON-OFF operation support dependable local machinery isolation.

Typical Applications

• ATEX Zone 22 industrial installations.
• Four-pole isolation in potentially explosive atmospheres.
• Dusty industrial environments.
• Mills and material processing plants.
• Hazardous-area conveyor systems.
• Industrial motor isolation within the specified AC-23A ratings.
• Powder and bulk-material handling equipment.
• Processing and manufacturing machinery.
• Industrial installations requiring EMC-compatible isolation.