400A 3P MCCB Schneider Electric Molded Case Circuit Breaker – Applications

ComPact NSX 400A 3P MCCB Schneider Electric Molded Case Circuit Breaker is designed to meet your needs from thermal-magnetic to advanced MicroLogic trip units.

An excellent choice for all standard and specific applications, including:

• Standard applications: industries, buildings, infrastructures
• Specific applications demanding high performance: marine, oil and gas extraction and processing, mining operations, metals and minerals production, and data centers
• Source-changeover systems (changeover panels): service sector (hospital operating rooms, computer rooms, ), industry (assembly lines, ship engine rooms, etc.), infrastructures (runway, railway, etc.)

Breaker-status indications, during normal operation or after a fault

A single type of contact provides all the different indication functions:

1. OF (ON/OFF) indicates the position of the circuit breaker contacts
2. SD (trip indication) indicates that the circuit breaker has tripped due to:
   • an overload
   • a short-circuit
   • an earth fault (Vigi)
   • operation of a voltage release
   • operation of the “push to trip” button
   • disconnection when the device is ON.

The SD contact returns to de-energised state when the circuit breaker is reset.

3. SDE (fault-trip indication) indicates that the circuit breaker has tripped due to:

• an overload
• a short-circuit
• an earth fault (Vigi)

4. SDV indicates that the circuit breaker has tripped due to an earth fault. It returns

de-energised state when the Vigi module is reset.