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Protection Relay
 
 
Three Phase Fault Detection     Relays
Under/Over Voltage Relays
Single Phase Preventors
SM 500
 
 
 
 
SM 501
 
 
 
 
 
 
UV / OV relays
 
 
 
 
 
 
 
SM 301
 
 
 
Three Phase 4 wire Fault Detection Relays SM 500
Features:
Compact 36 mm wide. Adjustable Time Delay.
3 phase 4wire model. LED indications for power and relay status.
Protects against Phase Loss, Reversal, Phase Unbalance and Under / Over voltage faults. Din Rail and Base mountable.
Voltage sensing principle. CE, ROHS compliant.
Adjustable Over and under voltage trip levels. Applications in Motor protection.
 
Ordering Information:
Cat. No

Description

MG73BH 3 Ph-4 Wire/ single phase configurable integral protection relay with adjustable on time delay & 2 C/O.
MG73BF

3 Ph-4 Wire/ single phase configurable integral protection relay with adjustable trip time delay & 2 C/O.
 
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Three Phase Fault Detection Relays 3 wire SM 501
Features:
Compact 36 mm wide. Adjustable Time Delay.
3 phase 3wire model. LED indications for power and relay status.
Protects against Phase Loss, Reversal, Phase Unbalance, Neutral Loss and Under / Over voltage faults.
Din Rail and Base mountable.
Voltage sensing principle. CE, ROHS compliant.
Adjustable Over and under voltage trip levels. Applications in Motor protection.
Ordering Information:
Cat. No

Description

MG53BH 3 Ph-3 Wire phase monitoring relay, 415 VAC with adjustable on delay time, 2 C/O.
MG53BF 3 Ph-3 Wire phase monitoring relay, 415 VAC with adjustable trip time, 2 C/O.
MG53BI 3 Ph-3 Wire phase monitoring relay, 415 VAC with 94 V asymmetry (fixed) , 2 C/O.
MG53BO 3 Ph-3 Wire phase monitoring relay, 415 VAC with 3 min on delay, 5 sec off delay (both fixed), 2 C/O.

MC21B5

208-480 V AC, Phase Fail Phase Sequence Relay. 2 C/O

 
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Three Phase Under Over Voltage Relays
Features:
Compact 36 mm wide. LED indications for power and relay status.
Protects against Phase Loss, Neutral Loss and Under / Over voltage faults.
Din Rail and Base mountable.
Voltage sensing principle. CE, ROHS compliant.
Adjustable Over and under voltage trip levels. Applications in Motor protection.
Adjustable Time Delay.    
 
Ordering Information:
Cat. No

Description

MD71B9 UV / OV relay with adjustable 1.5 to 15 min. on delay time
MD71BE UV / OV relay with adjustable 1.5 to 15 sec. on delay time
MD71BF UV / OV relay with adjustable 1.5 to 15 sec. release time (off delay)
 
 
Single Phasing Preventors SM 301
Features:
Economical and Compact Single phasing preventor.
Din/Base mountable.
Protects against Phase loss, Phase reversal & Phase Asymmetry.
Accurate and compact.
Adjustable Time delay. CE, ROHS approved
LED for Relay On indication. Designed for motor protection in industrial sectors.
Voltage sensing principle.    
 
Ordering Information:
Cat. No

Description

MA51BC
415VAC 50/60 Hz