1SCA128504R1001 ABB 20 A 3-Pole 9 kW 415 V Enclosed Safety Isolator

Why Choose the ABB OTU25BA3MS2 Enclosed Safety Isolator?

The ABB OTU25BA3MS2, product ID 1SCA128504R1001, is a compact 3-pole enclosed safety switch-disconnector designed for dependable local isolation of motors, machinery and industrial electrical equipment. It is rated at 20 A AC-23A at 380–415 V with a motor switching capacity of 9 kW at 415 V.

The OTU25BA3MS2 combines an ABB switch-disconnector with a durable polycarbonate enclosure and a highly visible red-yellow operating handle. The handle provides clear I-O / ON-OFF indication, making the isolation point easy to identify during normal operation, servicing and maintenance.

Designed for industrial safety isolation, the OTU25BA3MS2 has a 25 A AC-22A rating at 380–415 V and 690 V. Cable entry is provided from both the top and bottom through 2 × Ø25.5 mm openings per side, while the compact 161 × 100 × 115 mm enclosure makes the unit suitable for installations where space is limited.

Key Advantages

• Compact 3-pole enclosed safety isolator for industrial applications.
• 20 A AC-23A rating at 380–415 V.
• 9 kW motor switching capacity at 415 V.
• 25 A AC-22A rating at 380–415 V and 690 V.
• Durable polycarbonate enclosure for industrial installations.
• Highly visible red-yellow operating handle for safety isolation.
• Top and bottom cable entry for flexible installation.
• Compact 161 × 100 × 115 mm enclosure footprint.

Key Features

• ABB OTU enclosed switch-disconnector.
• 3-pole configuration.
• 20 A AC-23A at 380–415 V.
• 9 kW motor rating at 415 V.
• 25 A AC-22A at 380–415 V.
• 25 A AC-22A at 690 V.
• 20 A AC-23A at 500 V.
• 11 A AC-23A at 690 V.
• Polycarbonate enclosure.
• Red-yellow round operating handle.
• I-O / ON-OFF position indication.
• Cable entry from top and bottom.
• 2 × Ø25.5 mm cable openings per side.
• No auxiliary contacts fitted as standard.
• Supports up to 2NO + 2NC auxiliary contacts.
• Compact enclosed format for local machinery isolation.

Compact Safety Isolation for Motors and Machinery

An enclosed safety switch-disconnector provides a clearly identifiable means of disconnecting electrical equipment from its supply during servicing, inspection and maintenance. The ABB OTU25BA3MS2 combines a 3-pole switching mechanism with a red-yellow operating handle, helping operators quickly identify the local isolation point on machinery and industrial equipment.

With its 20 A AC-23A rating at 380–415 V and 9 kW motor capacity at 415 V, the OTU25BA3MS2 is particularly suited to local motor isolation. Its compact polycarbonate enclosure and top-and-bottom cable entry arrangement simplify installation close to machinery while providing a dedicated enclosed switching point.

Typical Applications

• Motor isolation up to 9 kW at 415 V.
• Three-phase machinery isolation.
• Industrial safety isolation points.
• Pumps, fans and ventilation equipment.
• Conveyors and material handling systems.
• Production and packaging machinery.
• Industrial control equipment.
• Plant maintenance isolation points.
• Commercial and industrial electrical installations.