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HVA Mini Circuit Breaker
Specifications:
| Standard Conformity | IS 8828:96 & IEC(60898:2002) | |||
| Type/Series | B | C | D | |
| Rated Current(In) | A | 6 - 40 | 0.5 - 63 | 0.5 - 63 |
| Rated Voltage(ac)(Ue) | V | 240/415 | 240/415 | 240/415 |
| Rated Frequency(f) | Hz | 50 | 50 | 50 |
| Poles | 1P.2P.3P.4P | 2P.2P3P.4P | ||
| Rated Short Circuit Breaking Capacity | kA | 10 | 10 | 4.5 |
| Magnetic Release Setting | (3 - 5)In | (5-10)In | (10-20) In | |
| Rated Insulation Voltage(ui) | V | 660 | 660 | 660 |
| Reted Impulse Voltage(Uimp) | kV | 4 | 4 | 4 |
| Electrical/Mechanical Endurance (no.of operations) less than 32A More than 32A |
20,000 10,000 |
20,000 10,000 |
20,000 10,000 |
|
| Ambient Temperature | ( ) |
-5 to +55 | -5 to +55 | -5 to +55 |
| Terminal Capacity(max) | sq.mm | 25 | 25 | 25 |
| Vibration | g | 3 | 3 | 3 |
| Shock | 40mm free fall | 40mm free fall | 40mm free fall | |
| PRotection Class | IP - 20 | |||
| Installation Position | Vertical / Horizontal | |||
| Mounting | Clip on DIN Rail (35mm  7.5 mm) |
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| Case & Cover | Moulded,flame retardant thermoplastic material | |||
Characteristics curve:
| Thermal Tripping | Magnetic Tripping | |||||
| As per | No tripping | Tripping | Time | Hold | Trip | Time |
| IS:8828:96 | current | current | Limits | current | current | Limits |
| 1 | 1 | t | 1 | 1 | t | |
| B Curve | 1.131N |
 1h |
31N |
Y0.1s |
||
| 1.451N |
 1h |
51N |
0.1s |
|||
| C Cure | 1.131N |
1h |
51N |
Y0.1s |
||
| 1.451N |
1h |
101N |
0.1s |
|||
| D Cure | 1.131N |
1h |
101N |
0.1s |
||
| 1.451N |
1h |
201N |
0.1s |
|||
| 13=2.551N |
1st60s for 1N32A 1s t120s for 1N 32A |
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Tripping Characteristics:
Based on theTripping Characteristics,MCBs are available in?'B','C' and 'D' curve to suit different types of applications.
'B' Curve:for protection of electrical circuits with equipment that does not cause surge current (lighting and distribution circuits) Short circuit release is set to (3-5) In
'C' Curve:for protection of electrical circuits with equipment that causes surge current (inductive loads and motor circuits) Short circuit release is set to (5-10) In
'D' Curve: for protection of electrical circuits which causes high inrush current,typically 12-15 times the thermal rated current (transformers,X-ray machines etc.)Short circuit release is set to (10-20) In
Characteristics curve:
Dimensions:
