Measuring relays for voltage monitoring DOLD

• According to IEC/EN 60 255, DIN VDE 0435-303
• Fast detection of undervoltage or phase failure in three-phase
voltage systems
• Detects auto reclosing of 20 ms
• Adjustable response value 0.55 ... 1.05 UN
• Operate delay to generate a defined reset signal
• Manual reset possible with external circuit
• Single-phase connection possible
• Optionally fixed response value 0.8 UN
• Closed circuit operation principle
• Green LED indicate for closed contact
• Independant of phase sequence
• 3p4w connection
• Optionally for 3p3w systems
• 2 changeover contacts
• Devices available in 2 enclosure versions:
IL 9079: depth 59 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SL 9079: depth 98 mm, with terminals at the top for cabinets
for mounting plate and cable duct
• Width 35 mm

• According to IEC/EN 60 255, DIN VDE 0435-303
• Fast detection of undervoltage or phase failure in three-phase
voltage systems
• Detects auto reclosing of 20 ms
• Adjustable response value 0.55 ... 1.05 UN
• Operate delay to generate a defined reset signal
• Manual reset possible with external circuit
• Single-phase connection possible
• Optionally fixed response value 0.8 UN
• Closed circuit operation principle
• Green LED indicate for closed contact
• Independant of phase sequence
• 3p4w connection
• Optionally for 3p3w systems
• 2 changeover contacts
• Devices available in 2 enclosure versions:
IL 9079: depth 59 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SL 9079: depth 98 mm, with terminals at the top for cabinets
for mounting plate and cable duct
• Width 35 mm