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Relay with 30% fixed asymmetry detection, 1 C/O contact, 208–480 VAC.

Stock Code: MK21D5

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This monitoring relay provides phase sequence and asymmetry detection for industrial 3-phase power systems.

🔧 Technical Highlights:

     
  • Voltage Range: 208–480 VAC
  •  
  • Asymmetry: 30% fixed
  •  
  • Delays: ON < 750 ms | OFF 100 ms
  •  
  • Output: 1 C/O

✅ Benefits:

     
  • Reliable fixed-level fault detection
  •  
  • Quick trip reduces equipment damage
  •  
  • Compact and cost-effective

🚀 Applications:

     
  • Generators
  •  
  • Three-phase machinery
  •  
  • Distribution circuits

MK21D5 protects rotating equipment from phase anomalies in mid-voltage systems.

Supply Voltage3x380-440Vac
Output Relay / ChannelsSPCO
Output Relay Rating5A @ 230V
MountingDIN Rail
Size17.5mm
Connections3 Wire
ProtectionIP20, IP30
Weight0.12
Type File Name
Data Sheet voltagemonitoringrelays.pdf
Technical Drawings 1M micon & 175.stp.zip
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