Quality Inspection for Motorized Circuit Breaker – BA47-29 series Miniature Circuit breaker(MCB) – DaDa

>> Introduction

BA47-29  are intended for protecting distribution and group systems having different loads:
– electric appliances, lighting – V characteristic switches;
– drives with moderate starting currents (compressor, fan group) – C characteristic switches;
– drives with high starting currents (hoisting mechanisms, pumps) – D characteristic switches;
Miniature circuit breaker BA47-29 are recommended for use in electrical distribution panels of residential and public buildings.

>> Advantages

· Two types of short circuit protection.

· Wide range of operating temperatures from –40 to +50° С.

· Updated wider engagement lever with improved contact area.

· Notches on terminal clamps provide for lowering thermal losses and boosting the mechanical stability of connection.

MCB DA47-29
For protection of general power distribution (IEC/EN 60898-1)
Poles			1P	2P	3P	4P
Electrical performance
Functions			short circuit protection,overload protection,isolationg,control
Rated frequency f(Hz)			50-60Hz
Rated working voltage Ue V AC			230/400	400
Rated current In (A)			6,10,16,20,25,32,40,50,63
Rated insulated voltage Ui(V)			500
Impulse withstand voltage Uimp(kV)			4
Instantaneous tripping type	BA47-29		B/C/D
Rated short circuit Icn(kA)	BA47-29		4.5
Release type			Thermal magnetic type
Service life(O~C)	Mechanical	Actual value	20000
		Standard value	4000
	Electrical	Actual value	8000
		Standard value	4000
Connection and installation
Protectiom degree			IP20
Wire                                             mm²			1~35
Working temperature			-5 ～+40℃
Resistance to humidity and heat			Class 2
Altitude above sea			≤2000
Relative humidity			+20℃ , ≤90% ;+40℃ , ≤50%
Pollution degree			2
Installation environment			Avoid obvious shock and vibration
Installation class			Class Ⅱ , Class Ⅲ
Mounting			DIN35 rail
Combination with accessories
Auxiliary contact			Yes
Alarm contact			Yes
Shunt release			Yes
Undervoltage release			Yes
Auxiliary contact+Alarm contact			Yes
Dimensions(mm) (WxHxL)		a	17.5	35	52.5	70
		b	80.2	80.2	80.2	80.2
		c	76.5	76.5	76.5	76.5