Load separation or Main switches completely separate electrical loads or system components from the electrical supply. They also switch under load or overload. They are used to shut down maintenance work and plant protection. The devices of the series DHS 4 are protective against load and/or Main switch in four-pole design, in which the N-contact is switched on in advance and switched off afterwards. Because of their design they insert themselves excellently in the look of the ground fault circuit interrupter DFS. DHS with emergency-OFF function allows an emergency-OFF device to be connected, such as buttons. An integrated LED signals the triggering through an actuator or wire break. Reactivation is prevented until repairs are made. Properties: With EMERGENCY STOP function for triggering or Switching by means of actuating elements; monitoring of the emergency-OFF function on wire break and display by an LED; high short-circuit resistance and high switching capacity; double-sided double-level terminals for large conductor cross-section and busbars; indication of position; type of installation: Rapid mounting on rail; infeed from above; mounting position random; field of application: Particularly suitable for use in main distribution boards in extensive power supplies e.g. for camping sites, marinas, allotments, exhibition sites etc.; Notes: In accordance with EN 60947-3, circuit breakers, circuit breakers and switch disconnectors are used as main switches in practice. The circuit breaker must switch on, conduct, and switch off currents under operating conditions in the circuit (including a defined operational overload). No separation function is required when the switch is switched off. A circuit breaker is therefore not suitable for a safe separation in the sense of the international installation regulations. Disconnect switches must meet the appropriate requirements for a separation function when the switch is switched off, but only currents of negligible size need to be switched in the case of operation. The combination of both versions is the switch disconnectors. Which combines both properties in itself and can thus be used universally for the safe activation of electrical systems.
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