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 B03 ::

Circuit diagram

ContactsNC
Nominal voltage250V, 50 - 60 Hz
Load:
Izn, cosþ = 1,0
Ix, cosþ = 0,6
6,3 A
4 A
Life expectation in nominal conditions10 000
Life expectation in maximum conditions10A /2000 cycles
Temperature range650C - 1450C
Temperature tolerance 50C / 70C / 100C
Temperature change speed0,50 C / 1 min
Acceptable temperature of environmentT 1500C
Thermic resistancemax. 2300C / 1 min
Electrical strenght of the insulation2000V; 50Hz; 1 min
Insulation resistance>= 2 Mohm
Histeresis zone300C 150C below the temp. of release
Contact resistanceMax. 15mOhm

*NC - normally closed     *NO - normally open


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