Product Family Overview The XB Series offers a complete
terminal block system with a universal range of
accessories. Marking, bridging and
testing accessories are standardized
across the different clamping technologies
-- reducing inventory and logistics
costs. The modular terminal block
design allows for use of the different
terminal block types together or
individually, providing the highest
degree of flexibility.
Application Description The metal portion of the XB Series
terminal blocks are made from high-grade,
strain-crack and corrosion proof
copper alloys. They won’t experience
any electrolytic corrosion or rusting,
even when moisture is present. The
metal surfaces are protected with a
lead-free, galvanic nickel or tin plating.
The good electrical conductivity permits
only a low temperature rise. The
Polyamide 6.6 housings allow for
operating temperatures up to 125°C
and are certified for inflammability
Class V0 in accordance with UL 94.
Flexible plug-in bridge system
-- All three technologies (Screw, Spring and
IDC) use the same bridge system,
allowing for individual potential distribution
and quickly bridged connections
among the same terminal block
type or across different types. The
XB Series terminal blocks have two bridge
shafts arranged in one line, making
flexible chain bridging and skip bridging
between non-adjacent terminal
blocks possible. Plug-in bridges are
available from 2 to 50 positions.
Reducing bridges are also available to
connect a larger terminal block to a
Large surface area for marking
-- All XB Series terminal blocks have generously
sized surface areas for labeling.
This allows for clearly labeled wiring
which results in reduced start-up time
and simplifies activities such as testing
and maintenance. There are provisions
for marking individual terminal
blocks and end stops, strips of
terminal blocks, and large groups
of terminal blocks.
Standardized testing system
-- All test plugs make contact in one of the
easily accessible bridge shafts. A
2.3 mm diameter test plug is available
for individual measuring wires.
Modular test plugs are also available
for more advanced testing.
The XBPT Series incorporates a spring cage connection system
proven in applications that are sensitive to vibration. The spring
mechanism always exerts the same constant force on the wire,
resulting in a vibration proof, gas-tight connection, and independent
of the user. The space-saving front connection, with the wire and
screwdriver coming in parallel from the same direction, allows for
simple wiring in places where there is little space available.
The connection point is opened with a standard screwdriver. After the
wire has been inserted into the wire guide of the terminal block, the
screwdriver is removed and the wire automatically makes contact.
The space-saving design and front entry design make the XBPT
Series ideal for control systems where there is little space. Even so,
they offer maximum connection space, resulting in fast wiring of
stranded and solid conductors, with or without ferrules. XBPT
terminal blocks are available with cross-sections from 2.5 mm2 up to
35 mm2. The double bridge shaft can accommodate individual chain
bridging and step-down bridging from other terminal blocks.