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TR11 Thermal Breaker
The Techna TR11 Circuit Breaker for
equipment, is a single pole push-to-reset, thermally operated overload
protector, providing reliable, trip-free operation on overloads and
short circuits, within the maximum breaking capacity specified. The
latching trip mechanism maintains high contact force preventing contact
bounce and reducing the risk of contact welding.
The TR11 is a drop-in replacement to
the ETA 1140 series circuit breaker.
Typical applications
Main applications are the protection of single phase motors,
transformers, UPS, power strips, solenoids, etc., against damage due to
over-current conditions.
Operation
The mechanism of the circuit breaker is designed to open the contacts in
the event of a current flow in excess of the rated current according to
the time/current characteristics of the device. A bimetal strip, which
has the advantage of being immune to high inrush currents and line
transients is heated by an over-current and deflects, thereby releasing
the latch mechanism. The contacts open even if the reset button is
manually held in the closed position. This is known as a trip free
mechanism. The contacts open and close with a positive snap action and
the tripped state is clearly indicated by the white band visible on the
extended projection of the reset button.
Auxiliary Terminal
The circuit breaker can be supplied with an auxiliary terminal input -
this provides the ability to connect a non protected auxiliary circuit
to the breaker for signalling purposes.
Download more information
on TR11 Thermal Circuit Breakers (PDF 286KB) |
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Technical Data |
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Current ratings (A) |
0.5, 0.9,
1.0, 1.2, 1.5, 1.8, 2, 2.2, 2.5, 2.7, 3, 3.3, 4, 5, 6, 6.5, 7, 8, 9, 10,
12 and 16 |
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Rated voltage (V) |
240Vac
50/60Hz;
32V DC/24V DC (VDE) |
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Initial insulation
resistance |
> 100W |
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Di-electric strength |
1.5 KV for
one minute |
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Overload switching capacity |
6x In~, 4x In– |
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Maximum breaking capacity |
8x In for <6A
ac, 6x In or 60A dc (whichever is higher) for ³6A |
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Conditional short circuit
current |
1000 A PC1
category |
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Power loss |
1 - 2 Watts |
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Interrupting capacity (UL1077) |
1000A, 240VAC,
32VDC |
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Operating temperature |
Max. 60ºC
ambient |
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Operational life at 2 x In |
1000 cycles |
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Limited short circuit current |
1000 Amps PC 1 |
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Degree of protection |
IP 40 for
Accessible Range ; IP 00 for Termination range |
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Standards |
IEC 60934, CSA
22.2 No. 235, UL-1077 |
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Weight |
10g (without
nut) |
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UL/CSA Ratings |
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Current rating (A) |
0.5 to 16A |
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Voltage rating (V) |
240Vac / 32Vdc |
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VDE Ratings |
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Current rating (A) |
0.5 to 16A |
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Voltage rating (V) |
240Vac / 24Vdc |
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