3p/4p Moulded Case Circuit Breaker MCCB Electrical Circuit Breaker

Basic Info

Model NO.	ARM3-250-07
Breaking Capacity	Low Voltage Circuit Breakers
Operation	Manual Type
Speed	Normal Type Circuit Breaker
Arc-extinguishing Medium	Air
Installation	Fixed
Structure	MCCB
Poles Number	3
Type	Circuit Breaker
Function	Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
Certification	CCC
Usage Category	Category a
Mechanical Life(Time)	7000
Electrical Life(Time)	1000
Transport Package	Carton
Specification	100A/125A/140A/160A/180A/200A/225A/250A
Trademark	Huakun
Origin	Shanghai, China
HS Code	85362000
Production Capacity	500000

Product Description

Scope of applicationARXM3 series molded case circuit breakers(hereinafter referred to as circuit breakers)are suitable for infrequent switching and motor starting inAC 50Hz(or 60Hz)circuits with rated insulation voltage of 1000V,rated working voltage of 690V or 400V,and rated working current of 630A (Inm≤630A and below).The circuit breaker has overload,short circuit and undervoltage protection functions,and can protect lines and power equipment from damage. According to its rated ultimate short-circuit breaking capacity,the circuit breakers are classified into four levels:C type (economic),L type (standard),M type (medium breaking)and H type (high breaking). The circuit breaker has the characteristics of small volume,high breaking capacity,short arcing,antivibration,modular installation of accessories, simple use,etc.The circuit breaker can be installed vertically (i. e. upright)or horizontally(i. e. transversely).The circuit breaker has isolation function.The circuit breaker shall comply with IEC60947-2 and GB/T14048.2.Material advantages of ARM3 series circuit breaker products1.Heat shrinkable insulating material;2.Alloy contact with high silver content;3.Mechanism parts:high quality high carbon steel materials;4. The thermosetting insulating material adopts the unique formula material,which has high strength,arc resistance,strong insulation,high temperature resistance and good flame retardancy;5. High sensitivity temperature sensing element is made of high-quality bimetallic element materials,and there is no need to reduce the capacity from-5ºCto 55ºCambient temperature;6. Spring materials have longer temperature resistance and fatigue resistance(50%longer than ordinary springs).

Model	ARM3-250
Rated current In(A)	100A/125A/140A/160A/180A/200A/225A/250A
Rated current of frame size Inm(A)	250A
Usage category	Category A
Rated ultimate short-circuit breaking capacity level	L M H
Number of poles (P)	3P/4P 3P/4P 3P/4P
Rated working voltage Ue (V)	400V
Rated ultimate short-circuit breaking capacity Icu (kA)	50KA 70KA 100KA
Rated service short-circuit breaking capacity Ics(kA)	35KA 50KA 70KA
Rated working voltage Ue (V)	690V
Rated ultimate short-circuit breaking capacity Icu (kA)	/ 20KA /
Rated service short-circuit breaking capacity Ics(kA)	/ 10KA /
Rated insulation voltage Ui (V)	1000V
Rated impulse withstand voltage Uimp (V)	12KV
Mechanical life(time)	7000
Electrical life(time)	1000
Arcing distance (mm)	<50