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MCBs technical details
S 200 UDC series DC Applications

Examples for different voltage levels betweeen conductor and earth in the case of identical voltage between conductors:
voltage U n 125 V– 125 V–
between all-pole disconnection 1-pole disconnection
conductors
voltage U n 60 V– 125 V–
between circuit symmetrically earthed circuit unsymmetrically earthed
conductor
and earth
MCB 2-pole 2-pole
S 202 UDC S 202 UDC

➀ in the circuit diagram, the negative pole is earthed.
➁ in the circuit diagram, the positive pole is earthed.