TS-709-12

**CIRCUIT BREAKERS FOR EQUIPMENT** 

**TS-LINE** 

## **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 temperature 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 reclose 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 devices 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 snapaction 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 

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. 

_www.schurterinc.com_ 

_47_ C 

**CIRCUIT BREAKERS FOR EQUIPMENT** 

**TS-709** 

## **Effect of ambient temperature** 

## **Tripping characteristic** 

The unit is calibrated for an ambient temperature of +25°C. To determine the rated current for a lower or higher ambient temperature, use a correction factor from the table below: 

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||||
|---|---|---|
|Ambient|Correction factor|
|temperature [°C]|Rated current|
|3-4 A|5-16 A|
|+10|0,74|0,83|
|+15|0,83|0,92|
|+20|0,91|0,94|
|+25|1,00|1,00|
|+30|1,25|1,09|
|+35|1,43|1,16|
|+40|1,82|1,25|
|+45|1,33|
|+50|1,43|
|+55|1,67|
|+60|2,00|
|Example|
|Rated current at +25°C|4,0 A|
|Ambient temperature|+30°C|
|Correction factor|1,25|
|Chosen rated current at|
|+30°C ambient temperature|
|4 A x 1,25 = 5 A|

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[ min ] [ sec ]<br>10'000<br>Rated current<br>3–16 A<br>60 Ambient temp. +25  ° C<br>30 2`000<br>20<br>1`00<br>10<br>500<br>5<br>200<br>100<br>1<br>50<br>20<br>10<br>5<br>2<br>1<br>0,5<br>0,3<br>0,2<br>0,1<br>1,05 1,35 2 3 4 5 8 10<br>Multiple of rated current [ x In<br>Tripping time<br>**----- End of picture text -----**<br>


## **Technical data** 

Rated voltage Ue See approvals, page 47H AC 125; 250 V     DC 32 V * Rated current In See approvals, page 47H 3 – 16 A Conditional short circuit current Inc PC1, AC 125 V 1000 A * Short circuit capacity Icn AC 250 V 200 A Dielectric strength AC 1500 V Endurance Number of cycles at 1,5 x In (AC 125 V)                500 Type of actuation • Reset type R Type of tripping • Thermal TO • Cycling trip-free Weight approx. 15 g 

G _www.schurterinc.com_ 

_47_ 

**CIRCUIT BREAKERS FOR EQUIPMENT** 

**TS-709** 

## **Approvals** 

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Rated current range Rated voltage AC<br>UL 1077 4 – 15 A 125 V<br>CSA C 22,2 3 – 15 A 120 V 125 V<br>**----- End of picture text -----**<br>


## **Order code** 

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Basic type<br>TS-709 Single pole thermal overload protection switch, cycling trip-free<br>Standard configuration<br>Mounting style<br>Threaded neck type 7/16” x 28T (Plastic)<br>Actuation type<br>Reset type<br>Terminal type<br>6,3 x 0,8 mm quick connect terminals<br>Rated current<br>3 4 5 7,5 10 12,5 15 16<br>See approvals above<br>Other rated currents by request<br>Accessories<br>P Plastic knurled nut<br>K Metal knurled nut<br>H Metal hexagonal nut<br>T S – 7 0 9 – 12,5 – K Order example<br>**----- End of picture text -----**<br>


> _www.schurterinc.com 47_ H 

**CIRCUIT BREAKERS FOR EQUIPMENT** 

**TS-709** 

## Threaded neck typeSnap-in type 

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TS-709<br>29.5 7/16”7/"–28T<br>10 Ø 7.6<br>Cut-out<br>6.3 0.8<br>17.5 4.5 10.3<br>14.3<br>Schematic diagram – accessories<br>Schematic diagram Accessories<br>( 16.2 ) Ø 24<br>10.8<br>M 10x1<br>47 J www.schurterinc.com<br>B<br>TO<br>T- R<br>S<br>I<br>R<br>E<br>11.1<br>10.8<br>U<br>E<br>A<br>S<br>11.1<br>C<br>S<br>K<br>E<br>E<br>R<br>IR<br>E<br>R<br>P<br>C<br>T<br>15.7<br>11.1 9.7<br>1.8<br>22.5<br>11.6<br>2.5<br>14 Ø 12<br>0.5<br>**----- End of picture text -----**<br>