| Part | RoHS | Manufacturer | Circuit Protection Type | Mounting Feature | Rated AC Voltage | Rated DC Voltage | Rated Current | Terminal Shape | Minimum Operating Temperature | Terminal Finish | Rated Breaking Capacity | Manufacturer Series | Trip Time/Delay | Additional Features | Actuator Type | Packing Method | Body Length/Diameter | Body Width | Environmental Characteristics | JESD-609 Code | Dimensions | Circuit Function | Body Height | Reference Standard | No. of Poles | Maximum Operating Temperature | Blow Characteristic |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Littelfuse |
Thermal Circuit Breaker |
Panel Mount |
12 V |
25 A |
Quick Connect |
Automatic Reset |
SAE |
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|
E-t-a Elektrotechnische Apparate |
Thermal Magnetic Circuit Breaker |
Panel Mount |
250 V |
65 V |
10 A |
Screw |
-30 °C (-22 °F) |
800 A |
Rated breaking capacity at 32 VDC: 2500 A |
Toggle |
1.772 in (45 mm) |
0.492 in (12.5 mm) |
1.772 x 0.492 x 0.122 in (45 x 12.5 x 3.09 mm) |
Manual On/Off |
0.122 in (3.09 mm) |
CSA; GL; UL; VDE |
1 |
60 °C (140 °F) |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
15 A |
Quick Connect |
5 kA |
2.2 s |
Toggle |
50.8mm X 38.1mm X 51.89mm |
Series Trip |
2 |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
30 A |
Quick Connect |
2.5 kA |
2.2 s |
Toggle |
Series Trip |
2 |
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|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
20 A |
Quick Connect |
1 kA |
3 s |
Rocker |
1.89 in (48.01 mm) |
0.98 in (24.89 mm) |
Series Trip |
1.724 in (43.79 mm) |
2 |
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|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
10 A |
Quick Connect |
1 kA |
3 s |
Rocker |
1.89 in (48.01 mm) |
0.98 in (24.89 mm) |
Series Trip |
1.724 in (43.79 mm) |
2 |
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|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
5 A |
Quick Connect |
1 kA |
3 s |
Rocker |
1.89 in (48.01 mm) |
0.98 in (24.89 mm) |
Series Trip |
1.724 in (43.79 mm) |
2 |
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|
|
E-t-a Elektrotechnische Apparate |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
20 A |
Quick Connect |
-30 °C (-22 °F) |
20 A |
Rocker |
2.126 in (54 mm) |
0.827 in (21 mm) |
Corrosion Resistant |
2.126 x 0.827 x 1.299 in (54 x 21 x 33 mm) |
Manual On/Off |
1.299 in (33 mm) |
CCC; CSA; UL; VDE |
2 |
60 °C (140 °F) |
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|
E-t-a Elektrotechnische Apparate |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
5 A |
Quick Connect |
-30 °C (-22 °F) |
5 A |
Rocker |
2.126 in (54 mm) |
0.827 in (21 mm) |
Corrosion Resistant |
2.126 x 0.827 x 1.299 in (54 x 21 x 33 mm) |
Manual On/Off |
1.299 in (33 mm) |
CCC; CSA; UL; VDE |
2 |
60 °C (140 °F) |
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|
E-t-a Elektrotechnische Apparate |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
10 A |
Quick Connect |
-30 °C (-22 °F) |
100 A |
Rocker |
2.205 in (56 mm) |
0.827 in (21 mm) |
Corrosion Resistant |
2.205 x 0.827 x 1.299 in (56 x 21 x 33 mm) |
Manual On/Off |
1.299 in (33 mm) |
CCC; CSA; UL; VDE |
2 |
60 °C (140 °F) |
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|
E-t-a Elektrotechnische Apparate |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
6 A |
Quick Connect |
-30 °C (-22 °F) |
6 A |
Rocker |
2.205 in (56 mm) |
0.827 in (21 mm) |
Corrosion Resistant |
2.205 x 0.827 x 1.299 in (56 x 21 x 33 mm) |
Manual On/Off |
1.299 in (33 mm) |
CCC; CSA; UL; VDE |
2 |
60 °C (140 °F) |
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|
|
Siemens |
Thermal Circuit Breaker |
Panel Mount |
400 V |
2 A |
Screw |
-25 °C (-13 °F) |
10 kA |
5SY |
Sealed Bat |
3.543 in (90 mm) |
0.709 in (18 mm) |
IP20 |
3.543 x 0.709 x 2.756 in (90 x 18 x 70 mm) |
Under Voltage Release |
2.756 in (70 mm) |
CCC; CUL; EN; GOST; IMQ; UL; VDE |
1 |
45 °C (113 °F) |
Standard |
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|
Carling Technologies |
Magnetic Circuit Breaker |
Panel Mount |
50 V |
3 A |
Screw |
-40 °C (-40 °F) |
3 kA |
Standards: MIL-PRF-55629, MIL-STD-202 |
Toggle |
1.375 in (34.93 mm) |
0.656 in (16.66 mm) |
IP68 |
Series Trip |
1.634 in (41.5 mm) |
1 |
85 °C (185 °F) |
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|
Carling Technologies |
Magnetic Circuit Breaker |
Panel Mount |
50 V |
30 A |
Screw |
-40 °C (-40 °F) |
3 kA |
Standards: MIL-PRF-55629, MIL-STD-202 |
Toggle |
1.375 in (34.93 mm) |
0.656 in (16.66 mm) |
IP68 |
Series Trip |
1.634 in (41.5 mm) |
1 |
85 °C (185 °F) |
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|
Carling Technologies |
Magnetic Circuit Breaker |
Panel Mount |
50 V |
30 A |
Screw |
-40 °C (-40 °F) |
3 kA |
Standards: MIL-PRF-55629, MIL-STD-202 |
Toggle |
1.375 in (34.93 mm) |
0.656 in (16.66 mm) |
IP68 |
Series Trip |
1.634 in (41.5 mm) |
1 |
85 °C (185 °F) |
|||||||||||
|
Carling Technologies |
Magnetic Circuit Breaker |
Panel Mount |
50 V |
30 A |
Screw |
-40 °C (-40 °F) |
3 kA |
Standards: MIL-PRF-55629, MIL-STD-202 |
Toggle |
1.375 in (34.93 mm) |
0.656 in (16.66 mm) |
IP68 |
Series Trip |
1.634 in (41.5 mm) |
CSA; CUL; UL |
1 |
85 °C (185 °F) |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
20 A |
Quick Connect |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2 in (50.8 mm) |
1.5 in (38.1 mm) |
Fungus Resistant; Moisture Resistant |
2 x 1.5 x 1.64 in (50.8 x 38.1 x 41.66 mm) |
Series Trip |
1.64 in (41.66 mm) |
CSA; UL |
2 |
85 °C (185 °F) |
Standard |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
10 A |
Quick Connect |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2 in (50.8 mm) |
0.75 in (19.05 mm) |
Fungus Resistant; Moisture Resistant |
2 x 0.75 x 1.64 in (50.8 x 19.05 x 41.66 mm) |
Series Trip |
1.64 in (41.66 mm) |
CSA; UL |
1 |
85 °C (185 °F) |
Standard |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
15 A |
Quick Connect |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2 in (50.8 mm) |
0.75 in (19.05 mm) |
Fungus Resistant; Moisture Resistant |
2 x 0.75 x 1.64 in (50.8 x 19.05 x 41.66 mm) |
Series Trip |
1.64 in (41.66 mm) |
CSA; UL |
1 |
85 °C (185 °F) |
Standard |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
20 A |
Quick Connect |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2 in (50.8 mm) |
0.75 in (19.05 mm) |
Fungus Resistant; Moisture Resistant |
2 x 0.75 x 1.64 in (50.8 x 19.05 x 41.66 mm) |
Series Trip |
1.64 in (41.66 mm) |
CSA; UL |
1 |
85 °C (185 °F) |
Standard |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
5 A |
Quick Connect |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2 in (50.8 mm) |
0.75 in (19.05 mm) |
Fungus Resistant; Moisture Resistant |
2 x 0.75 x 1.64 in (50.8 x 19.05 x 41.66 mm) |
Series Trip |
1.64 in (41.66 mm) |
CSA; UL |
1 |
85 °C (185 °F) |
Standard |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
3 A |
Quick Connect |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2 in (50.8 mm) |
1.5 in (38.1 mm) |
Fungus Resistant; Moisture Resistant |
2 x 1.5 x 1.64 in (50.8 x 38.1 x 41.66 mm) |
Series Trip |
1.64 in (41.66 mm) |
CSA; UL |
2 |
85 °C (185 °F) |
Standard |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
5 A |
Quick Connect |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2 in (50.8 mm) |
1.5 in (38.1 mm) |
Fungus Resistant; Moisture Resistant |
2 x 1.5 x 1.64 in (50.8 x 38.1 x 41.66 mm) |
Series Trip |
1.64 in (41.66 mm) |
CSA; UL |
2 |
85 °C (185 °F) |
Standard |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
7 A |
Quick Connect |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2 in (50.8 mm) |
1.5 in (38.1 mm) |
Fungus Resistant; Moisture Resistant |
2 x 1.5 x 1.64 in (50.8 x 38.1 x 41.66 mm) |
Series Trip |
1.64 in (41.66 mm) |
CSA; UL |
2 |
85 °C (185 °F) |
Standard |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
20 A |
Quick Connect |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2.25 in (57.15 mm) |
2 in (50.8 mm) |
Fungus Resistant; Moisture Resistant |
2.25 x 2 x 1.64 in (57.15 x 50.8 x 41.66 mm) |
Series Trip |
1.64 in (41.66 mm) |
CSA; UL |
3 |
85 °C (185 °F) |
Standard |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
30 A |
Quick Connect |
-40 °C (-40 °F) |
2.5 kA |
2.2 s |
Toggle |
2.25 in (57.15 mm) |
2 in (50.8 mm) |
Fungus Resistant; Moisture Resistant |
2.25 x 2 x 1.64 in (57.15 x 50.8 x 41.66 mm) |
Series Trip |
1.64 in (41.66 mm) |
CSA; UL |
3 |
85 °C (185 °F) |
Standard |
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|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
250 V |
32 V |
20 A |
Quick Connect |
1 kA |
2.2 s |
Push To Reset |
0.76 in (19.31 mm) |
0.76 in (19.31 mm) |
Series Trip |
1.535 in (38.99 mm) |
1 |
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|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
250 V |
32 V |
3 A |
Quick Connect |
2.2 s |
Push To Reset |
0.76 in (19.31 mm) |
0.76 in (19.31 mm) |
Series Trip |
1.535 in (38.99 mm) |
1 |
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|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
1 A |
Lug |
1 kA |
10 s |
Push To Reset |
1.375 in (34.93 mm) |
0.66 in (16.76 mm) |
Series Trip |
1.375 in (34.93 mm) |
1 |
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|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
10 A |
Quick Connect |
3 s |
Rocker |
1.89 in (48.01 mm) |
0.98 in (24.89 mm) |
Series Trip |
1.724 in (43.79 mm) |
2 |
|||||||||||||
|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
5 A |
Quick Connect |
1 kA |
3 s |
Rocker |
1.89 in (48.01 mm) |
0.98 in (24.89 mm) |
Series Trip |
1.724 in (43.79 mm) |
2 |
||||||||||||
|
|
E-t-a Elektrotechnische Apparate |
Thermal Circuit Breaker |
Panel Mount |
250 V |
50 V |
2 A |
Quick Connect |
-20 °C (-4 °F) |
1 kA |
ENVIRONMENTAL CHARACTERISTICS: IP40; IP00 |
Push Button |
0.748 in (19 mm) |
0.52 in (13.2 mm) |
Corrosion Resistant; Moisture Resistant |
0.748 x 0.52 x 1.87 in (19 x 13.2 x 47.5 mm) |
Tease-Free And Trip-Free |
1.87 in (47.5 mm) |
CBE; CSA; IEC; UL; VDE |
1 |
60 °C (140 °F) |
Medium |
||||||
|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
30 A |
Stud |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2.5 in (63.5 mm) |
0.75 in (19.05 mm) |
Series Trip |
1.845 in (46.86 mm) |
1 |
85 °C (185 °F) |
|||||||||||
|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
30 A |
Stud |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2.5 in (63.5 mm) |
1.5 in (38.1 mm) |
Moisture Resistant |
Series Trip |
1.985 in (50.42 mm) |
CSA; UL; VDE |
2 |
85 °C (185 °F) |
Standard |
||||||||
|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
277 V |
40 A |
Stud |
-40 °C (-40 °F) |
5 kA |
2.2 s |
Toggle |
2.5 in (63.5 mm) |
1.5 in (38.1 mm) |
Series Trip |
1.845 in (46.86 mm) |
2 |
85 °C (185 °F) |
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|
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
250 V |
40 A |
Stud |
-40 °C (-40 °F) |
2 kA |
2.2 s |
Toggle |
2.5 in (63.5 mm) |
0.75 in (19.05 mm) |
Series Trip |
1.845 in (46.86 mm) |
3 |
85 °C (185 °F) |
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|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
240 V |
50 V |
50 A |
Screw |
1 kA |
6 s |
Push-Pull |
1.384 in (35.15 mm) |
0.69 in (17.53 mm) |
Corrosion/Environment/Moisture Resistant |
Series Trip |
1.6 in (40.64 mm) |
CSA; UL |
1 |
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|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
240 V |
50 V |
5 A |
Screw |
1 kA |
6 s |
Push-Pull |
1.384 in (35.15 mm) |
0.69 in (17.53 mm) |
Corrosion/Environment/Moisture Resistant |
Series Trip |
1.6 in (40.64 mm) |
CSA; UL |
1 |
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|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
240 V |
50 V |
10 A |
Screw |
1 kA |
6 s |
Toggle |
1.384 in (35.15 mm) |
0.69 in (17.53 mm) |
Corrosion/Environment/Moisture Resistant |
Series Trip |
1.6 in (40.64 mm) |
CSA; UL |
1 |
||||||||||
|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
240 V |
50 V |
15 A |
Screw |
1 kA |
6 s |
Toggle |
1.384 in (35.15 mm) |
0.69 in (17.53 mm) |
Corrosion/Environment/Moisture Resistant |
Series Trip |
1.6 in (40.64 mm) |
CSA; UL |
1 |
||||||||||
|
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
240 V |
50 V |
25 A |
Screw |
1 kA |
6 s |
Toggle |
1.384 in (35.15 mm) |
0.69 in (17.53 mm) |
Corrosion/Environment/Moisture Resistant |
Series Trip |
1.6 in (40.64 mm) |
CSA; UL |
1 |
||||||||||
|
TE Connectivity |
Thermal Circuit Breaker |
Panel Mount |
240 V |
50 V |
5 A |
Screw |
1 kA |
6 s |
Toggle |
1.384 in (35.15 mm) |
0.69 in (17.53 mm) |
Corrosion/Environment/Moisture Resistant |
Series Trip |
1.6 in (40.64 mm) |
CSA; UL |
1 |
|||||||||||
|
|
E-t-a Elektrotechnische Apparate |
Thermal Circuit Breaker |
Panel Mount |
250 V |
72 V |
6 A |
Quick Connect |
-20 °C (-4 °F) |
2 kA |
Push Button |
1.921 in (48.8 mm) |
0.323 in (8.2 mm) |
IP00; IP40 |
0.961 x 0.323 x 1.921 in (24.4 x 8.2 x 48.8 mm) |
Trip Free |
0.961 in (24.4 mm) |
CQC; CSA; EN; IEC; UL; VDE |
1 |
60 °C (140 °F) |
||||||||
|
TE Connectivity |
Magnetic Circuit Breaker |
Panel Mount |
65 V |
50 A |
Screw |
2.2 s |
Toggle |
Series Trip |
1 |
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|
|
Carling Technologies |
Thermal Circuit Breaker |
Panel Mount |
250 V |
32 V |
3 A |
Quick Connect |
-10 °C (14 °F) |
1 kA |
Rated breaking capacity at 32 VDC: 2500 A |
Push To Reset |
1.154 in (29.3 mm) |
0.551 in (14 mm) |
Manual On/Off |
1.78 in (45.2 mm) |
1 |
60 °C (140 °F) |
||||||||||
|
|
Carling Technologies |
Thermal Circuit Breaker |
Panel Mount |
250 V |
32 V |
5 A |
Quick Connect |
-10 °C (14 °F) |
1 kA |
Push To Reset |
1.154 in (29.3 mm) |
0.551 in (14 mm) |
Series Trip |
1.78 in (45.2 mm) |
CSA; CE; CUL; TUV; UL |
1 |
60 °C (140 °F) |
||||||||||
|
|
Carling Technologies |
Thermal Circuit Breaker |
Panel Mount |
250 V |
32 V |
15 A |
Quick Connect |
-10 °C (14 °F) |
1 kA |
Rated breaking capacity at 32 VDC: 2500 A |
Push To Reset |
1.154 in (29.3 mm) |
0.551 in (14 mm) |
Manual On/Off |
1.78 in (45.2 mm) |
1 |
60 °C (140 °F) |
||||||||||
|
|
Carling Technologies |
Thermal Circuit Breaker |
Panel Mount |
250 V |
32 V |
15 A |
Quick Connect |
-10 °C (14 °F) |
1 kA |
Push To Reset |
1.154 in (29.3 mm) |
0.551 in (14 mm) |
Series Trip |
1.78 in (45.2 mm) |
CSA; CE; CUL; TUV; UL |
1 |
60 °C (140 °F) |
A circuit breaker is an automatic electrical switch that is designed to protect an electrical circuit from damage caused by overcurrent or short circuits. Circuit breakers are commonly used in residential, commercial, and industrial electrical systems, and they are an important safety device that helps prevent electrical fires, equipment damage, and personal injury.
Circuit breakers work by monitoring the amount of current flowing through an electrical circuit. If the current exceeds a preset level, the circuit breaker will trip, or open the circuit, to prevent damage to the electrical system. When the circuit breaker trips, it interrupts the flow of current, which stops the electrical current from flowing and prevents further damage.
Circuit breakers are available in a variety of types and sizes, and they can be classified based on their voltage rating, current rating, and interrupting capacity. Some common types of circuit breakers include thermal circuit breakers, magnetic circuit breakers, and hybrid circuit breakers.
In addition to protecting electrical systems from overcurrent and short circuits, circuit breakers also help improve the reliability and efficiency of electrical systems. They can also be used to switch electrical circuits on and off, which can be helpful in certain applications.