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Manual Star Delta Starter Type MSD-O

The MSDO Range of Manual Oil Immersed Star Delta starters are Reliable, long lasting & economical. They are appropriate for extreme environments like coastal area, humid, arid or dusty areas, areas facing excessive rains etc The starter consists of a contactor, a drum switch & an overload relay. The contactor provides no-volt trip; the drum switch with pure thick copper contacts provides the changeover from Star to Delta & the overload relay, that works on differential trip mechanism, provides effective safeguard against overload. Connectors for incoming & outgoing cables ensures ease of wiring.

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The salient features :                       

  • Effective arc quenching in oil
  • The oil is a coolant as well as a lubricant to the entire mechanism.
  • Easy to operate
  • Modular design
  • Convenient connections
  • Ease of inspection & replacement.
  • The starters are available in 2 frame sizes to cover various ratings  


Ratings/ Tech Specifications:

  •    15HP: Contactor MPS 1.5/25A AC3 + OLR M1-BR 13-21A + Drum switch of glass epoxy 58mm dia -3/10 Copper Contacts
  •   20HP: Contactor MPS 1.5/25A AC3 + OLR M1-BR 18-24A + Drum switch of glass epoxy 58mm dia -3/10 Copper Contacts
  •    25HP: Contactor N46/ 46A AC3 + OLR S2-BR 18-27A/24-36A + Drum switch of glass epoxy 58mm dia -3/10 Copper Contacts
  •    30HP: Contactor  N46 / 46A AC3 + OLR S2-BR 24-36A+ Drum switch of glass epoxy 58mm dia -3/10 Copper Contacts
  •    40HP: Contactor 2CA63 / 63A AC3 + OLR S2-BR 34-51A + Drum switch of glass epoxy 70mm dia -3/12 Copper Contacts
  •    50HP: Contactor 2CA63 / 63A AC3 + OLR S2-BR 34-51A + Drum switch of glass epoxy 70mm dia -3/12 Copper Contacts

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