Thermal
circuit-breakers:
Technical data
B 03
H 03
M 01, M02, M03
MR 03
MR 33
R 03
R 33
S 03
S 33
T 03
TB 4500 C

:: Thermal circuit-breaker S03 ::

Circuit diagram

ContactsNC
Nominal voltage400V, 50 - 60 Hz
Load:
Izn, cosþ = 1,0
Ix, cosþ = 0,6
25A / 250V (16A / 400V)
16A (10A)
Life expectation in nominal conditions10 000
Temperature range500C - 1500C
Temperature tolerance+/- 50C / +/- 70C / +/- 100C
Temperature change speed0,50 C / 1 min
Acceptable temperature of environmentT 1600C
Thermic resistancemax. 2300C / 1 min
Electrical strenght of the insulation3750V; 50Hz ; 1 min
Insulation resistance>= 2 MOhm
Histeresis zone>= 250C -max. 450C below the temp. of release
Contact resistanceMax. 15 mOhm

*NC - normally closed     *NO - normally open


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