Surge protection cabinet for power system - LZA-/F Series

LZA-/F Series
Application range: These series are applied to equipotential bonding of the low voltage main or distribution boxes in the building, providing protection against the overvoltage arising fromthe lightning strike to power supply or faulty operation. (option from standard IEC61643-1 and GB50343)
Main features.
☆ Convenient wiring standard connection components
☆ Build-in temperature control and circuit breaking technology, high security performance.
☆ Green light in notice window indicates normal, red indicates broken, replacement notice, which are clear and easy distinguished.
☆ Function of lightning count capable of storage and display of lightning frequency
☆ Display status of normal on and off
☆ Totally-enclosed metal shell good shielding effectiveness free maintenance
Main technical data
Type LZA-20C LZA-40B
suffix /2F /3F /2F /3F
Norminal working voltage Un V 220V 380V 220V 380V
Max. continuous AC Voltage Uc V 385 385
Voltage protection level Up KV ＜1.8 ＜2.0
Norminal discharge current In (8/20μs) kA 20 40
Max. Discharge current Imax (8/20μs) kA 40 80
Reserve protection breaker 40A/2P 40A/4P 63A/2P 63A/4P
Protection principle 2P 3P+N 2P 3 P+ N
Response time ns ＜25
Enclosure material Aluminum alloy
Cross-sectional area ≥10mm 2 stranded/ flexible
Starting current ≥400A
Counting range 0-99
Leakage current 75% Uc 1mA ≤20μA
Ordering description
Type Remarks
LZA-20C/2F single phase
LZA-20C/3F three phase
LZA-40B/2F single phase
LZA-40B/3F three phase