1SCA152725R1001 ABB OTA25S4YX 20 A 4-Pole 9 kW ATEX EMC IP65 Aluminium Enclosed Safety Switch

Why Choose the ABB OTA25S4YX ATEX EMC Safety Switch?

The ABB OTA25S4YX, product ID 1SCA152725R1001, is a 4-pole ATEX EMC enclosed safety switch-disconnector designed for reliable isolation in potentially explosive and dusty industrial environments. It provides a 20 A AC-23A rating at 415 V with a motor switching capacity of 9 kW at 415 V.

The OTA25S4YX is housed in a rigid die-cast aluminium enclosure with IP65 protection. Its red-yellow I-O / ON-OFF operating handle provides clear safety identification, while the interlocked cover helps control enclosure access. The switch is designed in accordance with the ATEX requirements for potentially explosive atmospheres and carries the classification Ex tc III T70°C Dc for Zone 22 applications.

The complete assembly is EMC approved and is supplied with ATEX cable glands, cable-entry plugs, a PE terminal and 1NO auxiliary contact. Threaded cable entries are provided at the top and bottom, making the OTA25S4YX a purpose-built solution for local machinery isolation in hazardous dust environments.

Key Advantages

• 4-pole ATEX enclosed safety switch-disconnector for hazardous-area isolation.
• 20 A AC-23A at 415 V.
• 9 kW motor switching capacity at 415 V.
• ATEX classification Ex tc III T70°C Dc for Zone 22 applications.
• IP65 die-cast aluminium enclosure for demanding industrial environments.
• EMC-approved design for installations requiring electromagnetic compatibility.
• Red-yellow safety handle with I-O / ON-OFF indication.
• Supplied with ATEX cable glands and a 1NO auxiliary contact.

Key Features

• ABB OTA ATEX EMC safety switch.
• 4-pole configuration.
• 20 A AC-23A at 415 V.
• 9 kW AC-23A motor rating at 415 V.
• 11 A AC-23A at 690 V.
• 9 kW AC-23A motor rating at 690 V.
• ATEX Zone 22 suitability.
• ATEX classification: Ex tc III T70°C Dc.
• IP65 protection rating.
• Rigid die-cast aluminium enclosure.
• EMC-approved enclosed switch design.
• Red-yellow I-O / ON-OFF operating handle.
• Interlocked enclosure cover.
• Threaded cable entries from top and bottom.
• ATEX cable glands and cable-entry plugs supplied.
• 1NO auxiliary contact included.
• Supports up to 2NO + 2NC auxiliary contacts.
• PE terminal included.

ATEX Safety Isolation for Hazardous Dust Environments

Electrical isolation equipment used in potentially explosive atmospheres must be designed for the hazards present in the installation. The ABB OTA25S4YX is an ATEX enclosed safety switch classified Ex tc III T70°C Dc for Zone 22, making it suitable for relevant applications where combustible dust may occasionally create an explosive atmosphere.

With a 20 A AC-23A rating and 9 kW motor capacity at 415 V, the OTA25S4YX provides four-pole local isolation for motors and machinery. Its aluminium IP65 enclosure, red-yellow handle, included auxiliary contact and supplied ATEX cable glands make it particularly suitable for dusty process environments, conveyors, mills and other hazardous-area machinery installations.

Typical Applications

• ATEX Zone 22 industrial installations.
• Motor isolation up to 9 kW at 415 V.
• Four-pole machinery isolation in hazardous areas.
• Flour mills and other dusty processing environments.
• Conveyors operating in hazardous dust areas.
• Refineries and process installations where the specified ATEX classification is applicable.
• Bulk material handling equipment.
• Industrial production equipment requiring EMC-compatible isolation.
• Local maintenance and safety isolation in potentially explosive dust atmospheres.