BY4 series Surge Protective Devices

Usage and application scope of BY4 type surge protective device (short name "SPD") is suitable for AC 50/60 Hz,380V Technical Parameters

	BY4-60/3-385BY4-60/3N-385BY4-60/4-385	BY4-80/3-385BY4-80/3N-385BY4-80/4-385	BY4-100/3-385BY4-100/3N-385BY4-100/4-385
Maximum continuous operating voltage  Uc	385 V
Test grade	Class  2
Nominal discharge currentIn(8/20μs) kA	30 kA	40 kA	60 kA
Maximum discharge currentImax (8/20μs) kA	60 kA	80 kA	100 kA
Voltage protective level  Up	2.0 kV	2.5 kV	3.0 kV
Response time  ns	< 25 ns
Defending grade	IP20
Ambient temperature	-40---- +85°C
Color ( Mould )	Orange
( Base )	Grey
Outer covering material	Reinforced fire-retardant nylon PBT
Phase Line , Zero Line	6 ----3 5 mm²
Earth Line	6 ----3 5 mm²
Signal Line	1.5 mm²
Accessory	According to the needs adding the remote signaling contact

Notes: Some of these types are available with accessories: alarm and remote signalling contact ( those ending with B and X ).  Installation Location and Applicationl        SPD class D, functioning as an equi-potential connection in case of lightning.l        Installed at the joint of the LPZOA, LZPOB and LPZ1 zones.l        It is usually installed in low voltage main distribution cabinet connected to the incoming end of the buildings.l        It adopts 35 mm DIN rail.l        It is linked by 6 --- 35 mm² copper wire.l        The cable should choose double color wire which is longer than 6 mm².l        In order to guarantee electrical network’s normal operating after protective devicelosing efficiency , the protective device which linked to the phase line must beconnected a fuse box whose current is higher than 63A or a circuit breaker.

BY4 series Surge Protective Devices