350
Type Réf. Type Réf. Type Réf.
Type Réf. Type Réf. Type Réf.
NFC-UTE
UL CSA
NFC-UTE
UL CSA
NFC-UTE
UL CSANFC DIN UL CSA
MTC 6
MTC 6 0115 206.22
500 V Gr.C
31 mm max. / 1.22"
0,4-0,6 Nm / 3.5-5.3 Ib.in
FEM6 2,8 0118 368.16
CBM5 0,5 0178 745.14
CBM8 0,8 0178 746.15
1
2
3
T01102 001229
R
BADL V0 0199 408.02
BAM 0103 002.26
35 x 7,5 x 1
35 x 15 x 2,3 PR4 0168 500.12
35 x 15 x 1,5
32 x 15 PR1Z2 0163 050.04
11 12
End stop
th. 9,1 mm
End stop
th. 9,1 mm
Other end stops : See Accessories section
Rail PR30
prepunched
0173 220.05
Rail
Rail PR5
prepunched
0101 598.26
Rail
Other rails : See Accessories section
Accessories
Wire size
mm² / AWG
Rated voltage V
Rated current
Rated wire size
Wire stripping length mm / inches
Recommended torque Nm / Ib.in
Characteristics
Type Part number
Block standard Grey body
Type Part number
Spacing 6 mm .238"
6 mm block for thermocouple
wires.
Thermocouple terminal blocks
Compression clamp
DIN 1 - 3
2 conductors for
thermocouple
(DIA. 0,5 - 1,5 mm)
1End section grey
3Shield connector
RSee section on markers
marking method
When running extended or intermittent lengths of thermocouple wire, to a
measurement instrument, two solutions are available :
1. When signals are carried over a long distance, a thermocouple
transmitter is required. The thermocouple signal, in millivolts (mV), is
converted to a milliampere (mA) signal (i.e. 4-20 mA) for ease of
transmission.
2. When thermocouple wire is of insufficient length, termination and
interconnection, using terminal blocks, will extend its length.
Universal terminal block
Other thermocouple terminal blocks are available with hardware (screws,
clamps and connecting bar) which match the thermocouple material being
used. This requires inventory of many different terminal block types.
Thermocouple terminal blocks
Entrelec's MTC 6 thermocouple ter-
minal block provides an interface for
connecting thermocouple wire with
virtually no loss of signal integrity. The
interface design ensures positive wire
continuity and allows selection and
inventory of one terminal block for all
thermocouple material.
The thermocouple principle is based
on the reaction of different metals to
temperature. When thermocouple
wires are terminated or connected,
the "metal balance" must be
maintained. The introduction of a
foreign material (such as copper)
results in loss of signal strength and
integrity.
Figure 1. MTC 6 with shield connector
Entrelec's MTC 6 terminal block adapts to all thermocouple material. This
"neutral" method of connection limits the introduction of foreign materials to
an insignificant level. The thermocouple wire insulation is stripped (31 mm
maximum) and the bare wires are superimposed on one another. The
thermocouple wires are in contact over their complete 31 mm length and
tightened at two points by round tip screws (see figure 2). The screws, made
of plated brass, have only a mechanical function, that of holding the wires
together with a point contact. Thus, the pressure points are not relevant in the
connection environment.
One thermocouple lead connects through one terminal block (see figure 2).
The MTC 6 requires only 6 mm of space, allowing 50 terminals per foot of rail.
Thermocouple shield wire connector bar
The MTC 6 can be field or factory equipped with a shield connector bar (see
figure 1). This bar, made of treated brass, mounts in the lower part of the
terminal block. It ensures the continuity of the thermocouple wire shield
through the terminal block or to ground with no additional spacing.
th.
th.
th.
Sides of block Top of block
