100MCA00

Overview of Allen Bradley 100-MCA00

The Allen Bradley 100-MCA00 is a mechanical interlock specifically engineered for use with Allen Bradley 100-C series contactors. This component enables the safe mechanical interlocking of two contactors, ensuring that only one contactor can be engaged at a time, which is a crucial safety requirement in reversing motor starter assemblies and similar control schemes. The 100-MCA00 provides a direct, mechanical linkage without reliance on electrical interlocks or auxiliary contacts, reducing failure points and simplifying maintenance. Compact and easy to install, it is a commonly selected interlock for most sizes within the 100-C series, with the exception of models 100-C40 and 100-C90. Allen Bradley’s quality standards ensure durability, reliability, and compliance with global certifications such as UL, CSA, and CCC, making it an established choice for industrial automation panels where safety and performance are paramount.

Key Features of Allen Bradley 100-MCA00

• Designed for mechanical interlocking of two Allen Bradley 100-C contactors
• No auxiliary contacts – purely mechanical operation
• Quick installation between adjacent contactors
• Compatible with most 100-C models (excludes 100-C40 and 100-C90)
• Promotes safe control by preventing simultaneous engagement of both contactors
• Durable construction meets industrial safety standards

Technical Specs of 100-MCA00

• Type: Mechanical interlock device
• For use with: Allen Bradley 100-C contactors (except 100-C40, 100-C90)
• Operation: Mechanical only, no auxiliary contacts
• Included: 100 S9 Connector
• Certifications: UL, CSA, CCC, KC compliance
• Mounting: Between adjacent 100-C series contactors

Applications / Use Case

The Allen Bradley 100-MCA00 is essential in electrical control panels where safety interlocking of two contactors is mandatory, such as reversing starters for three-phase motors or changeover systems. By mechanically linking two contactors, this interlock physically prevents both from being closed at the same time, eliminating the risk of short circuits or dangerous electrical cross-connection. Its application is common in manufacturing lines, conveyor systems, and motor control centers where dependable, hardware-level safety is required. The 100-MCA00’s compatibility across most of the 100-C contactor series makes it a versatile accessory for OEM panel builders and facility maintenance personnel managing multi-motor controls, safety circuits, or redundant switching schemes.

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