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MCB DC B40, 1000Vdc 10kA, 2P

https://msf.oodin.sh/cat/product/98899
NSL PELEMCB02B40T

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MCB DC B40, 1000Vdc 10kA, 2P

Form

  • MCB (Miniature Circuit Breaker), 2 Pole, 40 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)