ZQNC-125 High breaking miniature circuit breaker

• ZQNC-125 high breaking small (leakage)circuit breaker is used to protect the short circuit and overload of the line.It is applicable to the lighting distribution system and the motor distribution system.Beautiful and compact appearance,light weight,excellent performance,high reliable breaking capacity,rapid tripping,high flame retardant and impact resistant plastic used for guide rail install ation shell and parts,long service life,mainly used for overload,short circuit and protection of AC 50Hz/60Hz single-pole 230V,two-pole,three-pole and four-pole 400V lines.At the same time,electrical devices and lighting lines can be switched on and off infrequently under normal conditions.

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Product overview

Model meaning

ZQ NC 125/ C 125/ 2P/ OF + MN AC230V

ZQ -Name of the company
NC -Product model
125 -Shell frame grade current
C -Tripping characteristic
125 -Operating current (optional)
2P -Number of poles
OF -Enclosure
MN -Enclosure
AC230V -Voltage value of shunt release

Note:

• Current shell frame grade lnm=125
• Tripping characteristics Type C refers to lighting protection,and Type D refers to power protection.
• Rated current optional:63/80/125/125A
• Number of poles 1P 2P 3P 4P
• Accessory Of auxiliary contact, SD alarm contact,note:only one of the accessories can be selected.
• Accessories： MN undervoltage release AC220V,MV overvoltage release AC220V,MN+MV undervoltage and overvoltage release AC220V MX+OF shunt release.Note 1:MN MV MN+MV can only be equipped with ZQNC-125-2P circuit breaker;2.Only one of the accessories can be selected.
• The voltage value of shunt releaseis DC24V (DC24-48 universal)and AC230V (DC110-130/AC230-400 universal).

Technical parameter

• Main types:Type C is mainly used for lighting protection;Type D is mainly used for power protection.
• The rated current of the circuit breaker is 63A,80A,125A and 125A.
• The number of poles of circuit breaker is divided into:1P 2P 3P 4P.
• The circuit breaker is embedded installation (can be installed on the mounting rail)
• The rated working voltage ofthe circuit breaker and its related rated short-circuit make-break capacity.

Rated current(A)	Rated short circuit breaking capacity
63、80、125、125	Number of poles	Rated voltage(V)	Breaking capacity(A)	Power factor
63、80、125、125	1.2、3.4	230/400	6000	0.45-0.50

• Overcurrent tripping characteristics

Ambient air temperature	l/In	Expected results of test time		l/ln	Expected results of test time	Initial state
Ambient air temperature	l/In	In≤63A	In >63A	l/ln	In≤125A	Initial state
40±2℃	1.05(C)	No tripping within 1 hour	No tripping within 2 hours	1.0(D)	>2h without tripping	Cold start
	1.30(C)	Tripping within hours	Tripping within 2 hours	1.2(D)	≤2h tripping	Hot start
	3.0(C)	Returnable time 3s	Returnable time 5s	7.2(D)	>2s	Hot stan
-5～45℃	8.0~12.0(C)	<0.2s tripping				Cold start
-5～45℃	0.0～14.0(D	<0.2s tripping				Cold start

Trip characteristic curve

• The circuit breaker shall be able to withstand the 2500V power frequency withstand voltage test for 1 minute without flashover and breakdown after the damp and heat resistance
• Mechanical and electrical life The mechanical and electrical life of the circuit breakeris 12500 times, of which the electrical life is 1500 times;
Tripping characteristic curve;
• Damp heat resistance class 2(temperature 55 °℃, relative temperature 95%);
• The connection terminal with clamp is used to fix the cable section up to 50mm.