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255V AC SPD T1+T2 25kA Lightning Surge Protection Box for 3 Phase

255V AC SPD T1+T2 25kA Lightning Surge Protection Box for 3 Phase

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Technical data

Type	BT 5L BCM 255/100 3+1
Art.-No.	840854
According to IEC 61643-11/EN 61643-11, UL 1449-4th	Class I + Class II / Type 1+ Type 2
Nominal a.c. voltage [U_N]	230V/400V
Rated voltage (max. continuous a.c. voltage) [Uc]	255V(L-N), 255V(N-PE)
Total Lightning impulse current (10/350μs) [I_imp]	100kA(L1+L2+L3+N-PE)
Lightning impulse current (10/350μs) [I_imp]	25kA(L-N), 50kA(N-PE)
Nominal discharge current (8/20μs) [I_n]	50kA(L-N), 50kA(N-PE)
Max. discharge current (8/20μs) [I_max]	75kA(L-N), 75kA(N-PE)
Voltage protection level at In [U_p]	≤ 1.5kV(L-N), ≤ 1.5kV(N-PE)
Response time [t_A]	≤ 100ns(L-N), ≤ 100ns(N-PE)
Frequency range[H_z]	50~60 Hz
Follow current extinguishing capability at Uc[I_f]	32A fuse will not be triggered at 2kA_rms(L-N) 100A_rms(N-PE)
Max. back up fuse (L) [F]	200A gL/gG
Max. back up fuse (L-L’) [F]	125A gL/gG
Cross-sectional area	10mm² ~35mm² solid / 50mm² flexible
Bulit-in back up fuse (MCB)	C60A
Operating temperature range [T_u]	-40°C...+80°C
Bulit-in impulse counter	0-999,3 digits(Type:IC 03)
Operating state indication	Power: Green light ;Faulty:Red light
Mounting on	Wall installation(Screws fixing)
Enclosure material	Black metal housing / galvanized in
Degree of Protection	IP 20
Compliance	IEC 61643-11:2011 ; EN 61643-11:2012; GB/T 18802.11-2020
Certification	CE (LVD, EMC); RoHS

Hightlight Features

1. Adopting SPD class l+ll (class B+C) combined (“3+1”) circuit for 3 phase TT/TN-S system.

2. Single-pole module max. lightning discharge current up to L-N 25kA/ N-PE 75kA (8/20us).

3. Built-in circuit breaker (MCB), prewired with SPD, windows for green indication of working status and red fault indication.

4. Impulse counter function, recording the lightning events.

5. External wiring terminal, easy for connection.

Summary

BT 5L BCM 255/100 3+1 Designed for installation in LPZ 0_A-1 or higher zones, this surge protection device safeguards low-voltage equipment from power surges.

Application:

It has hermetical GDT technology to combine (“3+1”) circuit, applied in three-phase TT or TN-S power supply system. Generally installing in indoor main distribution panel or cabinet.

Compliance Standards:

IEC 61643-11:2011

EN 61643-11:2012

GB/T 18802.11-2020.

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