Part Description & Function

The Allen-Bradley 140MT-C-W452 is a Bulletin 140MT three-phase compact busbar designed for connecting adjacent Motor Protection Circuit Breakers (MPCBs). It distributes line-side power across two compatible 140MT-C or 140MT-D frame devices, reducing the need for separate jumper wiring between starters. The busbar is a passive accessory with no operator positions, reset action, or switching behavior; it functions only as a fixed electrical interconnection after installation. Rockwell product data identifies this item as a 64 Ampere (A), 2-connection compact busbar with 45 mm (1.77 in) spacing for use with front-mounted auxiliary contacts.

Features

• Compact busbar format for grouped motor-protection-device connections.
• Front auxiliary contact clearance configuration.
• Two-position starter layout.

Applications

• Industrial motor-control panel assemblies.
• Grouped starter feeder distribution.
• Replacement accessory use in compatible Allen-Bradley 140MT busbar systems.

Specifications

• Series: Bulletin 140MT.
• Product type: three-phase compact busbar.
• Current rating: 64 A maximum continuous current.
• Connections: 2.
• Spacing: 1.77 in (45 mm).
• Compatible frame sizes: 140MT-C and 140MT-D.
• Mounting type: compact busbar connection across adjacent motor protection circuit breaker devices.
• Dimensions: 3.16 in length x 1.15 in width x 0.52 in height (80.2 mm x 29.2 mm x 13.3 mm), drawing dimensions.
• Universal Product Code (UPC): 191326737906.
• Origin Country: Spain.
• Construction type: motor protection circuit breaker accessory.
• Agency approvals: Conformité Européenne (CE), Eurasian Economic Community, and Underwriters Laboratories (UL) Listed.

Please note

This is not an exhaustive list of features, applications, and specifications. For more detailed information, compatibility details, and to verify any details listed, please refer to the manufacturer’s documentation. (v4.2a)