Summing Junction Boxes

The Strainsert SJB Series Summing Junction Boxes are for parallel averaging of two to four similar transducers. The standard SJB is available in a NEMA-12 steel enclosure (NEMA-4X packages are also optionally available).


The NEMA-12 comes in both a connector style and a cord grip style (NEMA-4X available with cord grips only).

Cord grips accept cables with diameters between 0.250 to 0.375 inches.

The removal of a gasket-tight lid enables the user to make cable wire connections to screw type terminal blocks mounted on an internal circuit board.

Overall enclosure dimensions are 7.5″ (L) x 4.25″ (W) x 3.5″ (H).


These summing junction boxes can also be combined with other Strainsert components into a fully comprehensive force measurement system. Please request information on or have an application engineer give you a call us using the contact form link to the right. Strainsert looks forward to assisting you.

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