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Telebahn 255V AC T1+T2 SPD 25kA Single Phase Surge Protection Device Box for Main Distribution Boards

Telebahn 255V AC T1+T2 SPD 25kA Single Phase Surge Protection Device Box for Main Distribution Boards

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Technical data

Type	BT 3L BCM 255/50 1+1
Art.No.	840864
According to IEC 61643-11 / EN 61643-11	Class I +Class II / Type 1 + Type 2
Nominal a.c. voltage [U_N]	230V
Rated voltage (max. continuous voltage) [Uc]	255V
Frequency range[H_z]	50~60 Hz
Total lightning impulse current (10/350) [I_imp]	50kA(L+N-PE)
Lightning impulse current (10/350) [I_imp]	25kA(L-N), 50kA(N-PE)
Nominal discharge current (8/20) [I_n]	50kA(L-N), 50kA(N-PE)
Max. discharge current (8/20) [I_max]	75kA(L-N), 75kA(N-PE)
Voltage protection level [U_p]	≤ 1.5kV(L-N), ≤ 1.5kV(N-PE)
Response time [t_A]	≤ 100ns(L-N), ≤ 100ns(N-PE)
Follow current extinguishing capability at Uc	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
Bulit-in back up fuse (MCB)	C60A
Bulit-in impulse counter	0-999, 3 digits(Type: IC 03)
Operating temperature range [Tu]	-40°C...+80°C
Operating state indication	Power: Green light; Faulty: Red light
Degree of protection	IP 20
Place of installation	Indoor
Max. cross-sectional area	35mm² solid /50mm² flexible
Mounting on	Wall installation(Screws fixing)
Enclosure material	Black metal housing / galvanized in
Certification	CE (LVD, EMC); RoHS
Compliance	IEC 61643-11:2011 ; EN 61643-11:2012; GB/T 18802.11-2020

Hightlight Features

1. Adopting SPD class l+ll (class B+C) combined (“1+1”) circuit for single phase TT/TN 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 1+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 (“1+1”) circuit, applied in single-phase TT or TN 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.