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
smaller one.
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.
SPECIFICATIONS FOR XBUT25 Terminal Width: 5.2 mm
Maximum Wire Size: 12 AWG/2.5 mm2
IEC 60 947-7-1 in V/A/AWG: 800/32/26-12
EN 50 0191 in V/A/AWG: 750/22 or 28/26-12
UL-cUL Ratings in V/A/AWG: 600/20/26-12
TECHNICAL DATA DIMENSIONS Width/Length/Cover Width in mm (in): 5.2 (0.20)/46.9 (1.85)/2.2 (0.09)
Height for 35 x 7.5/35 x 15 in mm (in): 47.5 (1.87)/55.0 (2.17)
TECHNICAL DATA IN ACCORDANCE WITH IEC Maximum Load Current in A/Cross Section in mm2: 32 / 4
Rated Surge Voltage in kV/Contamination Class: 8 / 3
Surge Voltage Category/Insulating Material Group: III / II
CONNECTION CAPACITY Stranded with Ferrule/with Ferrule and Plastic Sleeve in mm2: 0.25 to 2.5/0.25 to 2.5
MULTI-CONDUCTOR CONNECTION(SAME CROSS-SECTION) Solid/Stranded in mm2: 0.14 to 1.5/0.14 to 1.5
Stranded with Ferrules without Plastic Sleeve in mm2: 0.25 to 1.5
Stranded with Twin Ferrule with Plastic Sleeve in mm2: 0.5 to 1.5
Stripping Length in mm (in): 9 (0.35)
Thread: M3
Torque in in-lb (Nm): 5.3 to 7.1 (0.6 to 0.8)
Ordering Example: (1) XBUT25 Gray single level connection, ¥420
