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MSB SWITCHGEAR
MSB Medium Voltage SwitchgearMetal-enclosed switch and breaker combination (MSB) switchgear provides economic and reliable circuit switching and fault protection for medium voltage circuits. As primary protection for single-ended substations, it can eliminate the need for a secondary main breaker. It can be used as the primary main device and integrated with fused feeder switches in a line-up of fused MVS switchgear. Perfect for new substations or retrofit in existing substations where arc flash safety is an issue.
 
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  • Special design R-C snubber network to ensure substation transformer is protected from switching transients.
  • Integral 50/51 trip unit in a VCP-T primary vacuum breaker with special design current sensors mounted at the secondary bus to help lower incident energy.
  • Door-mounted DT-3000 50/51 provides overcurrent protection with integral current transformers.
  • Allows customer to eliminate the secondary main protection and switching device in single-ended substations, saving space and costs.
  • High-impact viewing window for full view of switch blade position located close to switch pad level allows ease of inspection.
  • Hinged cover with rust-proof, quarter-turn, nylon latches over the switch operating mechanism helps to discourage casual tampering.
  • Hinged, grounded metal barrier bolted closed in front of every switch prevents inadvertent contact with any live part for added safety.
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  • Adjustable overcurrent protection
  • Arcflash Reduction Maintenance System (ARMS)
  • Capacitor switching
  • Three-phase tripping
  • ZSI connection capability