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Download complete set of Spec. Sheets!


Download complete set of Spec. Sheets!

Superior Interlock Corporation - Key Interlocks System Manufacturer

Type B-4003
Superior Interlock Unit for Flat Mounting

Printable Technical Information
Printable Unit with TPIN - Molded Case Circuit Breaker Application
Viewable Online Unit with TPIN - Molded Case Circuit Breaker Application

Type B-4003 The Superior Locking Unit, type B-4003, is a key actuated bolt mechanism designed for many flat, surface, or sub mounting applications where mounting space is limited and facilities are available to permit the use of a mechanical locking bolt device. Compact in design, its small profile is helpful when size is an issue. This device is suitable for many OEM and existing applications. Some uses include but are not limited to, disconnect switches, circuit breakers, ground switches, transformer rectifiers, valves, and many other mechanical and electrical devices.


Type B-4003 Type B-4003

A suitable compact switch element or multiple auxiliary contacts are also available for use when it is necessary to provide additional electrical protection, provide feedback, signal PLCs, operate indicating circuits, or open and close other electrical circuits of the interlocked equipment.

Type B-4003 Type B-4003


Type B-4003 It is constructed entirely of non-ferrous material, and, for this reason may be used for outdoor service, provided dust covers are used to protect the lock mechanism. The case is available in bronze or stainless steel for harsh environments. The interior parts are all non-ferrous or stainless steel and are precisely adjusted to insure perfect key release.

Type B-4003 is available for single key, two key, and up to six key operations, with and without auxiliary contacts. Many accessories and options are available for these units. Please see cut sheet or call our factory for details.


Type B-4003 Type B-4003
Type B-4003


More Info on Products:
Key B-1088 Key B-3003 Key B-4003 Key B-5003 Key B-6003 Key B-7003
Key B-8003 Key B-857 Key B-1496 Key B-986 Key B-1088-2T




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Phone: (718) 821-8949