Sontune Stfw-40 ST225 Series Fixed Moulded Case Circuit Breaker

The ambient air temperature is about +40 oC; the ambient air temperature is below -5oC; the average value of ambient air temperature 24h is not more than +35oC.

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Description

Model NO.: STFW-40(ST225)
Operation: Manual Type
Arc-extinguishing Medium: Air
Structure: MCCB
Type: Circuit Breaker
Certification: CE
Ue: 240,415,690V
Pole: 3p4p
Transport Package: Inner Box/Carton
HS Code: 8536200000

Breaking Capacity: Low Voltage Circuit Breakers
Speed: Normal Type Circuit Breaker
Installation: Fixed
Poles Number: 3
Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection
Standard: IEC 60947-2 GB14048.2
in: 32,40,50,63,80,100,125,150,160,175,200,225A
Trademark: sontune
Origin: Wenzhou Zhejiang

Ambient air temperature
The ambient air temperature is about +40 ºC; the ambient air temperature is below -5ºC; the average value of ambient air temperature 24h is not more than +35ºC.
Elevation: installation elevation of not more than 2000m.
Atmospheric condition:
Relative humidity of the atmosphere in the surrounding air temperature of +40ºC is less than 50%; the relative humidity at the lower temperature can be high; most of the wet month average maximum relative humidity of 90%, the monthly average minimum temperature of +25ºC and considering the temperature due to changes in product surface.
Pollution grade: grade 3.

ed of current of release(A)	Thermodynamic release (ambient temp+40ºC		Operational current of magnetic release(A)
ed of current of release(A)	1.05In(cold state) inoperative time(h)	1.30In(heat state) inoperative time(h)	Operational current of magnetic release(A)
In≤63	≥1	<1	10-50In ±20%
63<In≤250	≥2	<2	10In ±20%
25<In≤800	≥2	<2	5-10In ±20%