English
ASKB1
AISIKAI
| Quantity: | |
|---|---|
Type Desigation
ASK | B | 1 | GQ | 63 | H | 1P+N | C | 40A |
Company | Product code | Design Serial | Function derivation code | Frame Ratings | Breaking Capacity | Number of Poles | Tripper Type | Rated Current(A) |
| AISIKAI ELECTRIC | Miniature Circuit Breaker | 1: basic type | No code: normal type GQ:over-voltage under-voltage protection(63A frame only) S:prepaid special protection L:leakage protection | 63: 63A frame 125: 125A frame | L: 4.5kA H: 6kA | 1P: 1 poles 2P: 2 poles 3P: 3poles 4P: 4 poles | C: Lighting type D: Power type | 3-125A |
| ASKB1 normal protection type miniature circuit breaker has features as advanced structure, reliable performance, high breaking capacity, beautiful and compact appearance, etc. Shell and three parts are made of impact resistant and high flame retardant materials. ASKB1 are suitable for AC 50Hz or 60Hz, rated operational voltage below 400V, rated current below 125A. MCB are mainly used for the overload and short-circuit protection of lines and equipment in lighting and power distribution in office buildings, residences and similar buildings. Under normal conditions, MCB can also be used in infrequent on-off control of electrical devices and lighting lines. |
I. By the over-current tripper rated current
Frame 63(A)： | 3, 6, 10, 16, 20, 25, 32, 40, 50, 63 |
Frame 125(A)： | 63, 80, 100, 125A |
II. By the over-current tripper rated current
C type: protect inductive load and high-inductive lighting system tripping characteristic: instantaneous trip range(5-10)In |
D type: protect high-inductive load and impact load with high starting current (motors, transformers, etc. ) tripping characteristic: instantaneous trip range(10-16)In |
Innovative structural design. Breaking capacity up to 10KA
Shell with ventilation slot design, active heat dissipation, reduce temperature riseComposite high conductive material. Longer service lifeErgonomic operation design, non-slip handle for easy operation
Technical Data
63 Frame | ||
General power distribution protection | ||
No of Poles | `1P, 2P, 3P, 4P | |
Electrical Performance | ||
Functions | Short-circuit protection, overload protection, isolation, control | |
Rated frequency f | Hz | 50 |
Rated operational voltage Ue | V AC | 230/400 | 400 | 400 | 400 |
Rated current In | A | 3, 6, 10, 16, 20, 25, 32, 40, 50, 63 |
Impulse withstand voltage Uimp | k V | 4 |
Instantaneous tripping type | C/D | |
Rated short-circuit capacity Icu | k A | Icu=Ics=4.5(L) |
Tripper type | Thermomagnetic | |
Service Life | Mechanical | 20000 |
Electrical | 8000 | |
Control & indication | ||
Optional accessories(multiple options available) | Alarm contact SD, auxiliary contact OF, | |
Connection & Installation | ||
Protection level | IP20 | |
Handle lock | None | |
Wiring Capacity | mm² | 1-25 |
Operational Temperature | ℃ | -5~40 |
Resistence to heat & humidity | 2 | |
Altitude | (m) | ≤2000 |
Air relative humidity | Not exceed 95% at +20℃; not exceed 50% at +40℃ | |
Pollution level | 2 | |
Installation environment | Without strong impact and vibration | |
Installation category | Ⅲ | |
Installation method | DIN standard rail | |
| a | 18 / 36 / 54 / 72 |
b | 80.5 / 80.5/ 80.5 / 80.5 | |
c | 76 / 78 / 78 / 78 |
125 Frame | ||
General power distribution protection | ||
No of Poles | 1P / 2P / 3P / 4P | |
Electrical Performance | ||
Functions | Short-circuit protection, overload protection, isolation, control | |
Rated frequency f | Hz | 50 |
Rated operational voltage Ue | V AC | 230 | 400 | 400 | 400 |
Rated current In | A | 63,80,100,125 |
Impulse withstand voltage Uimp | k V | 4 |
Instantaneous tripping type | C/D | |
Rated short-circuit capacity Icu | k A | 10 |
Tripper type | Thermomagnetic | |
Service Life | Mechanical | 20000 |
Electrical | 8000 |
Control & indication | ||
Optional accessories(multiple options available) | Alarm contact SD, auxiliary contact OF, | |
Connection & Installation | ||
Protection level | IP20 | |
Handle lock | None | |
Wiring Capacity | mm² | 1~25 |
Operational Temperature | ℃ | -5~40 |
Resistence to heat & humidity | 2 | |
Altitude | (m) | ≤2000 |
Air relative humidity | Not exceed 95% at +20℃; not exceed 50% at +40℃ | |
Pollution level | 2 | |
Installation environment | Without strong impact and vibration | |
Installation category | Ⅲ | |
Installation method | DIN standard rail | |
| a | 27 / 54 / 81 / 108 |
b | 80.5 / 80.5 / 80.5 / 80.5 | |
c | 73.5 / 78.5 / 78.5 / 78.5 |
Application Scenerios
General Operation & Installation Methods
Category | Requirement |
Operational Temperature | Between -5℃ and +40℃. |
Altitude | Lower than 2000 meters. |
Operational humidity | The relative humidity at +40℃ shall not exceed 50%. Higher relative humidity is allowed at lower temperature. The average maximum relative humidity is 90% in the most humid month |
Installation level | The installation level is Ⅱ,Ⅲ. |
Pollution level | Level 2 |
Installation method | Install vertically or horizontally. Use YH35-7.5 standard DIN rail |
Installation conditions | The inclination of the mounting surface to the vertical surface does not exceed 5 degrees. Use environment should be without strong impact and |
Wiring method | Fasten the wires using screws. |
Wire inlet method | Wiring reversely is acceptable for normal type. |
ASKB1 SERIES OVER-CURRENT TRIPPING CHARACTERISTICS TABLE
Normal Protection Type 63 Frame | |||||
Test current (A) | Rated current (A) | Rated time | Expected result | Initial result | Notes |
1.13In | All values | T≤1h | Not trip | Cold | The current rises steadily to the specified value within 5s |
1.45In | All values | T≤1h | Trip | Hot | Close the auxiliary switch to turn on the power |
2.55In | In≤32A | 1s＜T＜60S | Trip | Cold | Close the auxiliary switch to turn on the power |
2.55In | In≤32A | 1s＜T＜120S | Trip | Cold | Close the auxiliary switch to turn on the power |
5In (C) | All values | T≤0.1S | Not trip | Cold | Close the auxiliary switch to turn on the power |
10In (C) | All values | T＜0.1S | Trip | Cold | Close the auxiliary switch to turn on the power |
10In (C) | All values | T≤0.1S | Not trip | Cold | Close the auxiliary switch to turn on the power |
14In (C) | All values | T＜0.1S | Trip | Cold | Close the auxiliary switch to turn on the power |
Normal Protection Type 125 Frame | |||||
Test current (A) | Rated current (A) | Rated time | Expected result | Initial result | Notes |
1.05In | In=63 | T≤1h | Not trip | Cold | The current rises steadily to the specified value within 5s |
1.05In | In＞63 | T ＜2h | Not trip | Hot | |
1.30In | In=63 | T ＜1h | Trip | Performed immediately | |
after the previous test | |||||
1.30In | In＞63 | T ＜2h | Trip | Performed immediately | |
after the previous test | |||||
8In | In＞63 | T≤0.2S | Not trip | Cold | |
12In | In＞63 | T＜0.2S | Trip | Cold | |
FAQ
1. What Are the Key Components Inside an MCB?
An MCB consists of:
-Bimetallic Strip: Responds to prolonged overcurrent (thermal tripping).
-Solenoid (Electromagnet): Reacts to sudden high current (short-circuit tripping).
-Arc Chute: Extinguishes arcs during tripping to prevent damage.
-Operating Mechanism: Manual switch lever with spring-loaded contacts.
-Terminals: For connecting incoming/outgoing wires.
2. Can MCBs Be Used in DC Circuits?
-Standard MCBs: Designed for AC; DC use requires special models (DC MCBs).
-DC Ratings: Check manufacturer specs (e.g., 24V/48V DC systems in solar panels).
-Arc Extinction: DC arcs are harder to interrupt, needing higher breaking capacity.
3. What Are the Signs of a Failing MCB?
-Frequent Nuisance Tripping: Without actual overload/short circuit.
-Burning Smell/Odors: Overheating contacts or insulation.
-Physical Damage: Cracks, discoloration, or loose terminals.
-Action: Replace immediately to avoid fire risks.
4. How to Choose an MCB for Solar PV Systems?
-DC-Specific MCB: Rated for PV voltage (e.g., 600V DC).
-Polarity: Some DC MCBs require correct +/- terminal connections.
-UV Exposure: Use outdoor-rated enclosures if installed in sunlight.
5. How to Prevent MCBs from Tripping Due to Voltage Fluctuations?
-Use Voltage-Independent MCBs: Thermal-magnetic types are less sensitive to voltage swings.
-Stabilizers/AVRs: Install for sensitive equipment (e.g., medical devices).
-Note: MCBs protect against overcurrent, not over/under-voltage (use a voltage relay for that).
6. What Are the Safety Precautions When Handling MCBs?
-De-Energize Circuits: Turn off the main switch before installation/maintenance.
-Torque Specifications: Tighten terminals to manufacturer’s recommended torque.
-Avoid DIY Repairs: Never disassemble an MCB—replace faulty units.
Outline Dimesions 
