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Type 3 Surge Protective Device 275V Three Phase SPD Surge Protection

Type 3 Surge Protective Device 275V Three Phase SPD Surge Protection

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Technical Data

Type	BT TT 275 3N RM
According to EN 61643-11, IEC 61643-11	Type3 / Class III
Art.No.	812330
Nominal a.c. voltage [U_N]	230V/400V( 50/60Hz )
Rated voltage (max. continuous a.c. voltage) [Uc]	275V/440V( 50/60Hz )
Nominal current [I_L]	25A
Nominal discharge current (8/20μs)(L-N) [I_n]	5kA
Nominal discharge current (8/20μs)(L+N-PE) [I_n]	5kA
Nominal discharge current (8/20μs)[L-N] [Imax]	10kA
Nominal discharge current (8/20μs)(L+N-PE) [Imax]	10kA
Combination wave(1.2/50)[U_oc]	10kV
Voltage protection level (L-N) [U_p]	≤ 0.95kV
Voltage protection level (L/N-PE) [U_p]	≤ 1.5kV
Response time(L-L) [t_A]	≤ 25ns
Response time(L-PE) [t_A]	≤ 100ns
Max. back up fuse [F]	25A gL/gG
Short circuit withstand capability at max. back up fuse	6kA_rms
Operating temperature range [T_u]	-40°C...+80°C
Degree of Protection	IP 20
Cross-sectional area	0.5mm² ~ 6mm² solid / 4mm² flexible
Number of remote terminals	1(or Optional)
Mounting on / Orientation for normal installation / Remote terminal	35mm DIN rail,EN 60715
Enclosure material	Purple thermoplastic, UL94-V0
Dimension	Three-phase,3mods
perating state / Failure indication	Green / Red
Certification	CE(LVD,EMC), RoHS
Type of remote signalling contact	Break contact
Switching capacity[a.c.]	250V/0.5A
Swithcing capacity[d.c.]	250V/0.1A; 125V/0.2A;75V/0.5A
Cross-sectional area for remote signaling contact	Max. 16AWG/1.5mm² solid/flexible

parallel connection.jpg series connection.jpg

Highlight Features

1. Green light indicates normal and red indicates fault.

2. Three phase protection and with thermal diaconnectors.

3.Remote signalling connector for fault indication.

Summary

Surge Protective Device Type 3 BT TT 275 3N RM(812330)is for installation at LPZ 1-2 or higher, protecting low voltage equipment from surge damage and remote terminal is optional. Applied in modular SPD Class III (Class D) for three phase TT/TN-S("3+1" circuit) power supply system. Designed according to IEC 61643-11/ EN 61643-11 / GB / T 18802.11.