MCB DC B20, 1000Vdc 10kA, 2P
Valid Article
MCB DC B20, 1000Vdc 10kA, 2P
Form
MCB (Miniature Circuit Breaker), 2 Pole, 20 Amps
tripping Curve: B (Magnetic trip range: 3 to 5 times rated current)
rated Voltage: 1000V DC
breaking Capacity: 10 kA
modular design, standard DIN rail mountable (Width approx. 36mm for 2P)
Fit
compatible with main circuit and distribution boards of similar make and technical specifications
this device is specifically designed for the protection of a panel or a string of panels in a high-voltage DC circuit (e.g., photovoltaic installation) up to 1000V
respecting the correct voltage polarity is required
Function
MCBs are electromechanical devices which protect an electrical circuit from an overcurrent (thermal protection) and short circuits (magnetic protection)
an MCB functions by interrupting the continuity of electrical flow through the circuit once a fault is detected
curve B Specifics: designed to trip instantaneously between 3 to 5 times the rated current
comparison: this is more sensitive than the standard Curve C (which trips at 5-10x rated current)
application: curve B is strictly used for the protection of resistive loads (non-inductive) or circuits with long cable runs (where line impedance limits the short-circuit current)