ASKB5L
AISIKAI
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Type Desigation
ASK | B | 5 | L | 63 | H | 1P+N | C | 40A | |
Companycode | Product Type | Design Serial | Leakage Protection | Frame Ratings | Breaking Capacity | No. Of Poles | Tripper Type | Rated Current | |
Miniature Circuit Breaker | 1:basic type | No code | normal protection | 40A:40Aframe(leakage type) 63: 63Aframe | L : 6kA H: 10kA | C:Power type D:Lightening type | 6-63A | ||
L | Leakage protection | ||||||||
MAIN TECHNICAL PARAMETERS
40A Frame | |||||||||
General power distribution protection |
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No. of poles | 1P+N | 2P | 3P | 3P+N | 4P | ||||
Electrical performance | |||||||||
Functions | Short-circuit protection, overload protection, leakage protection,isolation, control | ||||||||
Residual current type | AC type(ensure tripping for sudden applied or slowly rising residual sinusoidal AC currents) | ||||||||
Rated frequency | f | (Hz) | 50/60 | ||||||
Rated operational voltage | Ue | (V AC) | 230 | 230 | 400 | 400 | 400 | ||
Rated residual action current | I△n | (mA) | Default 30mA(non-action current 15mA). 50, 100, 200, 300mA is customizable | ||||||
Rated current | In | (A) | 6、10、16、20、25、32、40 | ||||||
Instantaneous tripping type | C/D | ||||||||
Rated residual making and breaking capacity | Im | (A) | 2000 | ||||||
Impulse withstand voltage | Ui | (V) | 500 | ||||||
Rated short-circuit capacity | Uimp | (kV) | 4 | ||||||
Rated short-circuit capacity | Icu | (kA) | L | Icu=Ics=6 | |||||
H | Icu=Ics=10 | ||||||||
Tripper type | Thermomagnetic | ||||||||
Service life | ( 0 ~ C ) | Mechanical service life | 20000 | ||||||
Electrical service life | 10000 | ||||||||
Control and indication | |||||||||
Optional accessories(multiple options available) | Alarm contact SD, auxiliary contact OF | ||||||||
Connection and installation | |||||||||
Protection level | IP20 | ||||||||
Wiring capacity | (mm²) | 1~25 | |||||||
Operational temperature | (℃) | (-25~+60) | |||||||
Resistance to heat and humidity | Class 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 | ||||||||
Outline dimensions (mm) | a | 45 | 63 | 90 | 99 | 177 | |||
| b | 94.5 | ||||||||
c | 76.8 | 77.8 | |||||||
63A Frame | |||||||||
General power distribution protection |
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No. of poles | 1P+N | 2P | 3P | 3P+N | 4P | ||||
Electrical performance | |||||||||
Functions | Short-circuit protection, overload protection, leakage protection,isolation, control | ||||||||
Residual current type | AC type(ensure tripping for sudden applied or slowly rising residual sinusoidal AC currents) | ||||||||
Rated frequency | f | (Hz) | 50/60 | ||||||
Rated operational voltage | Ue | (V AC) | 230 | 230 | 400 | 400 | 400 | ||
Rated residual action current | I△n | (mA) | Default 30mA(non-action current 15mA). 50, 100, 200, 300mA is customizable | ||||||
Rated current | In | (A) | 50、63 | ||||||
Instantaneous tripping type | C/D | ||||||||
Rated residual making and breaking capacity | Im | (A) | 2000 | ||||||
Rated short-circuit capacity | Icu | (kA) | L | Icu=Ics=6 | |||||
H | Icu=Ics=10 | ||||||||
Tripper type | Thermomagnetic | ||||||||
Service life | ( 0 ~ C ) | Mechanical service life | 20000 | ||||||
Electrical service life | 10000 | ||||||||
Control and indication | |||||||||
Optional accessories(multiple options available) | Alarm contact SD, auxiliary contact OF | ||||||||
Connection and installation | |||||||||
Protection level | IP20 | ||||||||
Wiring capacity | (mm²) | 1~25 | |||||||
Operational temperature | (℃) | (-25~+60) | |||||||
Resistance to heat and humidity | Class 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 | ||||||||
Outline dimensions (mm) | a | 54 | 72 | 177 | 177 | 135 | |||
| b | 88 | ||||||||
| c | 77 | 78.5 | |||||||
MAIN STRUCTURE INTRODUCTION
Structure overview | Leakage protection type miniature circuit breaker is modular structure, which is made of ASKB5 normal MCB body on the left and leakage detection mechanism on the right. The main components include circuit board, current transformer, electronic, etc. The left and right parts are tightly fixed together. Manual operation is used for open/close operation. |
Working method | Miniature circuit breakers achieve the on-off of the circuit through the manual operation on the open/close handles. When the circuit is short-circuited or overloaded, the magnetic tripper or thermal tripper pushes the free tripping mechanism into action and the main contact breaks the main circuit, realizing the protection of the distribution lines. When there is a leakage situation, the current vector sum through the N line current transformer is not equal to zero. The circuit board amplifies the transformer voltage signal, driving the electronic tripping into action, pushing the tripping mechanism in ASKB5 normal type body through the linkage rod to achieve the breaking protection. |
Circuit board | The main components use the bidirectional thyristor, which can sensitively detect the milliamp signal from the N-line transformer, and then analyze and process the signal to amplify the signal, relying on the principle of low power control of high power to drive the electronic tripper acts. |
Electronic tripper | The electronic tripper is the main action component of the leakage protection mechanism. After the signal amplified by the circuit board reaches the required voltage to drive the tripper, it acts immediately, driving the linkage rod to drive the tripping mechanism in ASKB5 normal type to break the main circuit for the purpose of protecting the distribution lines. |
Test button | Leakage protection miniature circuit breaker has test button. When the test button is pressed down, the driving circuit of the electronic tripper is turned on. The tripper acts immediately, driving the relevant mechanism to realize the breaking. It is used for periodic testing of the operating condition of leakage type circuit breakers. |
Note: the "cold" state means at the reference calibration temperature, without load before the test.
FAQ
Q1: What are the main functions of the ASKB5L Leakage Protection Miniature Circuit Breaker?
A1: It is applicable to AC 50Hz circuits with a rated working voltage of 230/400V and a rated current up to 63A, providing overload, short-circuit, and leakage protection for the circuit.
Q2: How can I test if the leakage protection function is working properly?
A2: The device includes a Test button. Pressing this button simulates a leakage signal, activating the electronic tripper and disconnecting the circuit. It is recommended to use this button periodically (e.g., monthly) to verify the reliability of the leakage protection mechanism and ensure normal operation.
Q3: What are the installation requirements for the ASKB5L?
A3:
• Ambient Temperature: -25℃ to +60℃.
• Humidity: ≤95% at 20℃; ≤50% at 40℃.
• Altitude: ≤2000 meters.
• Pollution Level: Level 2 (non-conductive dust, non-corrosive environments).
• Installation: Mounted on a DIN standard rail; avoid strong vibrations or impacts.
The Electronic MCCB with Built-in Electric Motorized Operating Mechanism solves the long-term reliability problems of traditional external motorized mechanisms, providing a more stable transmission.
The Load Isolation Switches (load disconnector) in this project provide visible isolation for maintenance, ensuring safe disconnection of the 5kV circuits during inspections and repairs to protect personnel and equipment.
Project Background:Vietnam's coastal ports and industrial parks are rapidly expanding. Due to frequent typhoons and rainy seasons, power interruptions are common. Many ports and cold chain warehouses require backup diesel generators and Automatic Transfer Switches (ATS) to ensure continuous operatio
