CIRCUIT BREAKERS FOR EQUIPMENT
Product description
The TS-line consists of a series of low cost thermally operated CBEs
available in three frame sizes for rated currents up to 40 A.
They are intended to provide protection against sustained overloads.
All CBEs of the TS-line use a thermo-bimetal to simulate the thermal
behavior of the protected components, which could be conductors in
wiring, motors, transformers etc.
The snap-action type of bimetal opens the contact when the tempe-
rature of the bimetal has reached a certain threshold level. The circuit
will then remain open unless the reset (or ON-) button is permanently
depressed. In this case the snap-action contact will momentarily re-
close until the bimetal has reached its trip-temperature again and
effects the automatic opening operation. This behavior is termed
«cycling trip-free». The «cycling» indicates the momentary re-closings
which do occur, the «trip-free» indicates that the opening operation of
the contacts can not be prevented by pressing the ON or the RESET
button.
Every CBE of the TS-line can well cope with overload currents up to 6
times the rated currents without any back-up assistance. If the fault
current could be higher, CBEs require back-up protection. In many
instances, this back-up protection is provided by the protective devi-
ces of the building installation.
The TS-Line is designed for automatic interruption and non-automatic
(manual) resetting only (R-type CBEs). They utilize a reliable snap-
action bimetal to achieve the automatic opening operation and quick
connect terminals for easy connection.
Common features are:
•
•
•
•
Attractive prices
Wide range of ratings
Reliable design
Approvals
TS-LINE
The TS-701 line has a threaded neck for panel mounting. The overall
dimensions are slightly bigger, but the available ratings are
considerably higher (up to 40 A).
The TS-709 line is a push to reset type CBE for panel mounting
(threaded neck). Its strong points are the small size and the attractive
price. Rated current are from 3A to 16A.
The TS-710 line fits into the mounting cut-off of miniature fuseholders.
Where the advantage of having a reusable protective device counts,
this CBE has its application.
47
C
www.schurterinc.com
CIRCUIT BREAKERS FOR EQUIPMENT
Effect of ambient
temperature
The unit is calibrated for an ambient tem-
perature of +25°C. To determine the rated
current for a lower or higher ambient
temperature, use a correction factor from
the table below:
TS-701
Tripping characteristic
[ min ] [ sec ]
10'000
Rated current
3– 4 A
5–40 A
60
30
20
10
2`000
1`00
500
200
100
1
50
20
10
5
2
1
0,5
Tripping time
0,3
0,2
0,1
1,05
1,5 1,65
2
3
4
5
Ambient temp.
+25
°C
Ambient
temperature [°C]
+10
+15
+20
+25
+30
+35
+40
+45
+50
+55
+60
Correction factor
Rated current
3-5 A
6-40 A
0,69
0,74
0,83
1,0
1,43
1,82
2,22
0,8
0,87
0,91
1,0
1,18
1,25
1,39
1,54
1,67
1,82
2,0
5
8
10
Multiple of rated current
[ x In
Example
Rated current at +25°C
Ambient temperature
Correction factor
Chosen rated current at
+40°C ambient temperature
10 A x 1,39 = 14 A
10,0 A
+40°C
1,39
Technical data
Rated voltage Ue
Rated current In
Conditional short circuit current Inc
Short circuit capacity Icn
Dielectric strength
Endurance
Type of actuation
Type of tripping
Number of cycles at 1,5 x I n (AC 125 V)
• Reset type
• Thermal
• Cycling trip-free
See approvals, page 47E
See approvals, page 47E
PC1, AC 250 V
AC 240 V
AC 125; 250 V
3
–
40 A
1000 A
200 A
AC 1500 V
500
R
TO
DC 50 V
Weight
approx. 24 g
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47
D
CIRCUIT BREAKERS FOR EQUIPMENT
TS-701
Approvals
Type TS-701-HT
Rated
current range
Rated
voltage AC
Type TS-701-HC
Rated
current range
Rated
voltage AC
UL
CSA
1077
C 22,2
3
–
30 A
3
–
30 A
250 V
125 V
3 – 30 A
3 – 30 A
250 V
125 V
Order code
Basic type
TS-701 Single pole thermal overload protection switch,
cycling trip-free
Mounting style
HT
HC
Threaded neck type 3/8” x 28T
Snap-in type (Plastic double spring)
Standard configuration for HT + HC
Actuation type
Reset type
Terminal type
6,3 x 0,8 mm quick connect terminals
Rated current
3
35
4
40
5
6
8
10
12
15
16
20
25
28
30
See approvals above
Accessories
P
K
H
Plastic knurled nut
Metal knurled nut
Metal hexagonal nut
T
S
–
7
0 1
–
HT
–
12
–
P
Order example
47
E
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