1SCA128505R1001 ABB 16 A AC-22A Enclosed Isolator

Why Choose the ABB OTU16BA3MS2 Enclosed Isolator?

The ABB OTU16BA3MS2, product ID 1SCA128505R1001, is a compact 16 A AC-22A enclosed switch-disconnector designed for dependable local electrical isolation. Part of ABB's plastic enclosed switch range, it combines a three-pole switch-disconnector with a protective enclosure for machinery, equipment and general industrial isolation applications.

The OTU16BA3MS2 features a red-yellow round operating handle with clear I-O / ON-OFF indication. The handle can be secured with up to three padlocks, helping provide controlled isolation during servicing and maintenance. Cable entry is available from the top and bottom through knock-out openings.

Rated at 16 A AC-22A up to 690 V, the OTU16BA3MS2 is also rated at 16 A AC-23A at 400 V and 10 A AC-23A at 690 V. Its compact 161 × 100 × 115 mm enclosure, 2 × M25 cable-entry provision and safety-coloured handle make it a practical solution for local isolation where clear identification and secure disconnection are required.

Key Advantages

• Compact 16 A AC-22A enclosed isolator for industrial electrical applications.
• 3-pole switch-disconnector for three-phase circuit isolation.
• Rated 16 A AC-22A up to 690 V.
• 16 A AC-23A rating at 400 V.
• Distinctive red-yellow operating handle for clear local identification.
• Padlockable handle accommodating up to three padlocks.
• Top and bottom cable entry for flexible installation.
• Compact enclosure measuring only 161 × 100 × 115 mm.

Key Features

• ABB enclosed switch-disconnector.
• 3-pole configuration.
• 16 A AC-22A rating up to 690 V.
• 16 A AC-23A rating at 400 V.
• 10 A AC-23A rating at 690 V.
• IP65 enclosed construction.
• Red-yellow round operating handle.
• I-O / ON-OFF position indication.
• Padlockable with up to three padlocks.
• Knock-out cable entries from top and bottom.
• 2 × M25 cable outlets per side.
• N and PE terminals supplied with the enclosed assembly.
• No auxiliary contacts fitted as standard.
• Supports up to 2NO + 2NC auxiliary contacts.
• Compact format for local industrial isolation.

Compact and Secure Local Electrical Isolation

An enclosed switch-disconnector provides a clearly identifiable means of disconnecting electrical equipment from its supply for operation, servicing and maintenance. The ABB OTU16BA3MS2 combines a 3-pole switching mechanism with an enclosed format and red-yellow operating handle, making the isolation point easy to identify at machinery and equipment.

The handle can be secured with up to three padlocks, helping maintain the switch in the isolated position during maintenance procedures. With its compact enclosure, top and bottom knock-out entries and 16 A AC-22A rating, the OTU16BA3MS2 is well suited to local isolation duties where space-efficient installation and straightforward operation are required.

Typical Applications

• Local electrical isolation.
• Three-phase machinery isolation.
• Industrial control equipment.
• Small motors and machinery.
• Pumps, fans and ventilation equipment.
• Conveyors and material handling equipment.
• Production and packaging machinery.
• Plant maintenance isolation points.
• Industrial and commercial electrical installations.