Basic Info.
Model NO.
ARM3-250-08
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
Rated Current
16A/20A/25A/32A/40A/50A/63A/80A/100A/125A
Rated Current of Frame Size
125A
Number of Poles
3p/4p
Rated Working Voltage
400V/690V
Rated Insulation Voltage
1000V
Rated Impulse Withstand Voltage
8kv
Rated Ultimate Short-Circuit Breaking Ca
35ka/50ka/70ka/100ka
Rated Service Short-Circuit Breaking Cap
22ka/35ka/50ka/70ka
Transport Package
Carton
Specification
100A/125A/140A/160A/180A/200A/225A/250A
Trademark
Huakun
Origin
Shanghai, China
HS Code
85362000
Production Capacity
500000
Packaging & Delivery
Package Size
9.20cm * 9.00cm * 6.80cm
Package Gross Weight
1.000kg
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 products
1.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 |
