FOUILLERET NORD DC Disconnect Switch
The NORD is a high quality, extremenly robust product. This safety device is simple and transparent to the network, and reliable over time and in all environnements. The NORD is a deformable switch which will move with the expansion and retraction of the your bussbars systems eliminating the need for flexible shunt connections. Also its individual spring systems help to distribute the current throughout the switch and provides a very low and constant voltage drop.

NORD DC Disconnector Switch is mainly used with copper bussbars systems. The NORD switch is bolted directly to the bussbars with bolted copper connections for easy installation. The electrical contact is made through silver contacts which give it strong mechanical endurance.

MAIN TECHNICAL CHARACTERISTICS
Electrical Data
• Temperature rise at nominal current (with 40°C max.
• Ambient temperature) less than : 65°C
• Typical temperature rise at nominal current (with 40°C max.) : 15°C above busbars
• Typical Voltage drop at nominal current : 30 mV
• Peak short-circuit current withstand (upon circuit configuration)
- In one pole configuration : 10 x (Nominal current)
- In two poles configuration : 5 x (nominal current)
• Dielectric withstand strength
- Between live parts in open position : 10 kV - 50 Hz - 1 min
- Between live parts and earth : 10 kV - 50 Hz - 1 min
- Between auxiliary contacts and earth : 2.5 kV - 50 Hz - 1 min
- Between motor and earth : 2 kV - 50 Hz - 1 min
• SCR leakage current breaking capacity (upon request) : 1 A - 100 V DC
• Power breaking capacity up to 100 kA - 100 V DC - L/R < 20 msec : Upon request

Mechanical Data
• Mechanical endurance (with respect to maintenance instructions). : 20 000 Cycles
• Typical duration of opening or dosing operation
- With motor operation : 3 to 12 seconds
- With pneumatic operation : Less than 1 second
• Ponctual temperature withstand without equipment damages. : 140°C