Eaton Electrical
TB Series Modular Terminal Blocks

Key Features

Blocks—Design Features

  • Compact design permits mounting 48–600V or 90–300V terminals per foot
  • Fully shielded construction, 600V spacings 
  • Nylon construction provides anti-tracking and impact resistance
  • TBA types are available in rail mounted, base mounted and  power distribution types
  • Terminal blocks easily snap on or off mounting rails; not necessary to disturb adjacent units
  • No end pieces or backing plates are needed when rail mounting
  • A 12 circuit subminiature blocks, rated 20A at 300V, is available for “high density” applications 
  • Popular blocks are also available in dual mount for use with standard TBA or 35 mm DIN rails

Terminals—Design Features

  • Insulated walls of lug guide wire into lug
  • Blocks are shipped with clamping screw backed out
  • Constant locking torque keeps terminal screws in position
  • Terminal screws are captive; cannot be lost in shipment or handling
  • Hardened stainless steel clamping collar eliminates stripped threads
  • Large opening in clamping collar accommodates oversized conductors; smallest collar will accept three 14 AWG stranded conductors

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TBA and TBD modular terminal blocks are designed to conserve space, while allowing maximum flexibility and ease of installation. Available as one-, two- and three-pole circuits, simple and uniform installation is possible because their design is based on 5/8 in (15.9 mm) modules. Standard blocks are white nylon.

Breathing Action Clamping Collar 

The unique design of the clamping collar permits the collar to breathe as the wire expands and contracts, maintaining a constant and permanent clamping pressure. This eliminates loose connections resulting from the gradual flattening of conductors and joint deterioration caused by heating and cooling cycles. 

Standards and Certifications

  • UL recognized: File No. E56797
  • CE approved

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