ABB VM96-4 1SBN033405T1000 AF Contactor 1000 A

ABB VM96-4 (article 1SBN033405T1000) is a mechanical interlock unit that couples two contactors side-by-side without consuming additional panel width. Its core function is mutual exclusion: once one contactor closes, the unit physically prevents the second from closing until the first has reopened. It is compatible with 3-pole and 4-pole contactors in the AF40...AF96, AFC40...AFC96, and AFS40...AFS96 series.

Technical specifications:

• Series: VM96-4
• ABB article number: 1SBN033405T1000
• EAN: 3471523130937
• Type: Mechanical interlock unit
• Compatible contactor poles: 3-pole or 4-pole
• Compatible contactor ranges: AF40...AF96, AFC40...AFC96, AFS40...AFS96
• Mounting style: Side-by-side between two contactors, no additional width required
• Included accessories: 2 fixing clips BB4

Features and benefits:

• Purely mechanical mutual exclusion - one contactor cannot close while the other remains closed, eliminating the risk of simultaneous energisation
• Side-by-side installation between two contactors adds no extra width to the assembly, keeping panel layouts compact
• Broad compatibility across three ABB contactor families (AF, AFC, AFS) in the 40 A to 96 A frame size range
• Supplied with 2 fixing clips (BB4) so no separate hardware order is needed for installation

Applications:

• Reversing starter circuits requiring hard interlocking between forward and reverse contactors
• Changeover switching where only one of two supply paths may be active at a time
• Two-speed motor control assemblies using separate contactors for each speed step
• Any control panel where two ABB AF/AFC/AFS series contactors must be mutually interlocked

Also known as: ABB VM96-4, VM96-4 1SBN033405T1000, ABB mechanical interlock for contactors, contactor interlock unit AF96, BB4 interlock accessory.