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ASKB2 Miniature Circuit Breaker(MCB)

ASKB2 series household miniature circuit breakers are suitable for the end power distribution lines of office buildings, residences and general industrial use. ASKB2 can protect lines against overload and short-circuit, and provide functions of isolation and control. Under normal conditions, MCB can also be used in infrequent on-off control of electrical devices and lighting lines. The MCB are suitable for AC 50/60Hz, rated voltage below 230V, rated current below 32A.

Model:
ASKB2
Brand:
AISIKAI

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Product Description

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Type Desigation

ASK	B	2	32	L	/1P+N/	C	32A
Company Code	Product code	Design Serial	Frame Ratings	Function derivation code	Number of Poles	Tripper Type	Rated Current(A)
AISIKAI ELECTRIC	Miniature Circuit Breaker	2: DPN type	32:32A frame	No code:normal protction L: leakage protection	1P+N single phase two lines. N line is involved in breaking	C:LIGHT type D: Power type	6-32A

ASKB2 NORMAL PROTECTION MINIATURE CIRCUIT BREAKER

Overview

ASKB2 series household miniature circuit breakers are suitable for the end power distribution lines of office buildings, residences and general industrial use. ASKB2 can protect lines against overload and short-circuit, and provide functions of isolation and control. Under normal conditions, MCB can also be used in infrequent on-off control of electrical devices and lighting lines. The MCB are suitable for AC 50/60Hz, rated voltage below 230V, rated current below 32A.

The MCB adopts the innovative "phase line+ N line" design, which can cut off the phase and neutral lines at the same time, achieving higher safety performance and avoiding personal and fire hazards caused by reverse wiring of the phase and neutral lines or high neutral-to-ground potential when using single-pole circuit breakers. The compact design makes its thickness only 18mm, which fully meets the high standard requirements for compo-nent volume of household distribution box, MCB has high breaking capacity, adopts modular design, and can be used with a variety of accessories to meet customers' requirements for other additional functions.

Classification

I. By the over-current tripper rated current

Frame 32(A)：

3, 6, 10, 16, 20, 25, 32A

II. By the over-current tripper rated current

B type: protect pure resistive load and low-inductive lighting system tripping characteristic: instantaneous trip range(3-5)ln

C type: protect inductive load and high-inductive lighting system tripping characteristic: instantaneous trip range(5-10)In

Features

Innovative "phase line+ N line" structural design. Thickness only 18mm. Save 50% spaceShell with ventilation slot design, active heat dissipation, reduce temperature riseComposite high conductive material. Longer service life Ergonomic operation design, non-slip handle for easy operation.

Technical Data

32 Frame
No of Poles	IP+N: single phase two lines, N line is involved in breaking
Electrical Performance
Functions		Short-circuit protection, overload protection, isolation, control
Rated frequency (f)	Hz	50
Rated operational voltage (Ue)	V AC	230
Rated current (In)	A	3, 6, 10, 16, 20, 25, 32
Impulse withstand voltage (Uimp)	k V	4
Instantaneous tripping type		C/D
Rated short-circuit capacity Icu	k A	3
Tripper type		Thermomagnetic
Service Life	Mechanical	20000
Service Life	Electrical	8000
Control & indication
Optional accessories		None
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
Outline Dimesions （Width x Height x Depth）	a	18
	b	81
	c	76

Application Scenerios

General Operation & Installation Methods

Category	Requirement
Operational Temperature	Between -5℃ and +40℃. The average value in 24 hours does not exceed +35℃
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 vibration.
Wiring method	Fasten the wires using screws.
Wire inlet method	Wiring reversely is acceptable for normal type. Wiring reversely is prohibited for leakage type.

FAQ

1. What are the rated current specs of ASKB2 series miniature circuit breakers?

- 32(A) frame: 3, 6, 10, 16, 20, 25, 32A

2. How does an MCB work?

-Overload Protection: A bimetallic strip heats up and bends, triggering the trip mechanism (thermal tripping).

-Short-Circuit Protection: An electromagnetic coil generates a magnetic force to instantly trip the mechanism (magnetic tripping).

-Manual Operation: Supports manual ON/OFF switching; some models allow remote control.

3. What Are the Common Types of MCBs?

-By Tripping Curve:

Type B (3–5× rated current): For residential/lighting circuits.
Type C (5–10× rated current): For motors and inductive loads.
Type D (10–20× rated current): For high inrush currents (e.g., transformers, compressors).

4. How to Select the Right MCB Current Rating?

Match Load Current: MCB rating should slightly exceed the circuit’s operating current (e.g., 16A MCB for a 10A load).
Consider Starting Current: Motors require higher tripping curves (Type C/D).
Cable Compatibility: Ensure the MCB protects the wire gauge (e.g., 2.5mm² copper cable pairs with 16A–20A MCB per local standards).