SLP40-750/3S

Description

Modular surge arrester for use in TN-C systems; with floating changeover contact.

Prewired complete unit consisting of a base part and plug-in protection modules
High discharge capacity due to heavy duty zinc oxide varistors/spark gaps
High reliability due to “Thermo Dynamic Control” SPD monitoring device

Technical data

Type	SLP40-750/3	SLP40-750/3S
SPD according to EN 61643-11 / IEC 61643-11	type 2 / class II	type 2 / class II
Nominal a.c. voltage U_n	690 V AC (50/60 Hz)	690 V AC (50/60 Hz)
Max. continuous operating a.c. voltage U_c	750 V AC (50/60 Hz)	750 V AC (50/60 Hz)
Nominal discharge current (8/20μs) I_n	20 kA	20 kA
Maximum discharge current (8/20μs) I_max	40 kA	40 kA
Voltage protection level U_P	3,4 kV	3,4 kV
Response time t_A	25 ns	25 ns
Max. mains-side over-current protection	100 A gL/gG	100 A gL/gG
Short-circuit current rating I_SCCR	25 kA_rms	25 kA_rms
Temporary overvoltage (TOV) (U_T) – Characteristic	871 V / 5 sec. – withstand	871 V / 5 sec. – withstand
Temporary overvoltage (TOV) (U_T) – Characteristic	1143 V / 120 min. – safe failure	1143 V / 120 min. – safe failure
Range of operating temperatures (T_U)	-40/+80°C	-40/+80°C
Operating state / fault indication	green / red	green / red
Number of ports	1	1
Cross-sectional area (min.)	1.5 mm² solid /flexible	1.5 mm² solid /flexible
Cross-sectional area (max.)	35 mm² stranded / 25 mm² flexible	35 mm² stranded / 25 mm² flexible
For mounting on	35 mm DIN rail acc. to EN 60715	35 mm DIN rail acc. to EN 60715
Enclosure material	thermoplastic	thermoplastic
Place of installation	indoor installation	indoor installation
Degree of protection	IP 20	IP 20
Capacity	3 module(s), DIN 43880	3 module(s), DIN 43880
Approvals	CE	CE
Type of remote signalling contact	–	changeover contact
a.c. switching capacity	–	250 V / 0.5 A
d.c. switching capacity	–	250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A
Cross-sectional area for remote signalling terminals	–	max. 1.5 mm² solid / flexible