1 BLOCK OF 4 OF CONTACTS, Schneider

Masterpact UR is composed of Masterpact case fitted with two supplementary modules:

• “UR control” module dedicated for detecting high short-circuits. This module is built-in the Masterpact UR breaker
• “UR power” module for energy storage trigger monitoring and control units supply. This module is placed near the breaker and connected to the pole thrusters by cables

• Masterpact UR is tested according to the IEC 60947-2 standard.
IACS recommendations and is certified by the following Marine organisations:
• Lloyd’s Register
• Bureau Veritas.
• Masterpact UR is composed of two subassemblies:
  • an electromechanical one for breaking
  • an electronic one for power energy (“UR power” module).
• The electromechanical one, adapted from a Masterpact NW breaker case, and its chassis comprises:
  • the chassis
  • the fixed and moving contacts
  • the arc chambers
  • the individual thruster mechanism : Thomson Effect Coil (T.E.C)
  • the individual current sensors
  • the pole operation mechanism
  • the auxiliaries and accessories (identical to the Masterpact NW standard device)
• The Micrologic control unit (A, P or H type) and the “UR control” module are fitted on the case, they are dedicated for detecting short circuits.
• The “UR power” module comprises:
  • the power capacitors (for energy storage)
  • the charging and discharging system monitored by the “UR control” module
  • the communication system with PC.