Page 69 - Wago_PCB_TerminalBlocksConnectors_Volume2_2015_US

Commoning Strips for PCB Terminal Strips
236, 255, 256, 257, 736, 737 and 738 Series 1
67

Horizontal commoning Vertical commoning
for 736 and 737 Series only 1
starting from 7.5 mm (0.295 in.) pin spacing

Horizontal commoning Vertical commoning
Indicates the connection of adjacent The solder pins of a terminal block (in line) are
potentials commoned to one potential
• for example, to common the “+” and “-” supply lines • for example, in vertical direction to allow bussing of a
when using terminal blocks for 3-conductor supply and distribution terminal
sensor and actuator applications up to 10 A.
• for example, as a ground (earth) commoning strip, Also, in some instances, wiring changes can be made
where use of the printed circuit traces without resorting to new PCB schematics and marking.
is not permitted by regulations for continuous looping
of ground circuits.

Horizontal commoning Vertical commoning New “commoning” strips are now available for commoning
custom-designed PCB terminal strips.
Connection of adjacent terminals Connection of terminals arranged in front of each other They allow commoning of pins in either the direction along
• for example, as “-” supply line in terminal blocks for • for example, as 3-conductor supply and distribution the assembly, or of all levels in a multi-level terminal strip for
actuators (max. 10 A total current) terminal block (up to 10 A) each pole.
The commoning strips are factory fitted, so please refer to
• for example, As ground (earth) commoning strip, where the order form on pages 1.68 and 1.69.

printed circuit traces are not permitted
by regulations for continuous looping of
ground circuits (max. short-time withstand Commoning allows terminal blocks of common potentials
2
current 70 A/mm for 1 sec. Standard to be created.
compliance must be ensured for end use!)
These commoning strips are available for the following pin
Note: Interruption of horizontal commoning reduces spacings:
spacing to the adjacent solder pins. • 5 mm, 5.08 mm (up to 20 poles)
• 7.5 mm, 7.62 mm (up to 16 poles)
• 10 mm, 10.16 mm (up to 12 poles).

In cases where not all pins use the commoning
strip, unequal height is compensated for by a spacer.