DB M 1 255 FM ( Pn : 961125 )

SPD according to EN 61643-11 Type 1 SPD according to IEC 61643-1/ -11 Class I Max. continuous operating a.c. voltage ( UC) 255 V Lightning impulse current ( 10/ 350 µ s) ( Iimp) 50 kA Specific energy ( W/ R) 625.00 kJ/ ohms Nominal discharge current ( 8/ 20 µ s) ( In) 50 kA Voltage protection level ( UP) d 2.5 kV Follow current extinguishing capability a.c. ( Ifi) 50 kArms Follow current limitation/ Selectivity no tripping of a 32 A gL/ gG fuse up to 50 kArms ( prosp.) Response time ( tA) d 100 ns Max. backup fuse ( L) up to IK = 50 kArms ( ta d 0.2 s) 500 A gL/ gG Max. backup fuse ( L) up to IK = 50 kArms ( ta d 5 s) 315 A gL/ gG Max. backup fuse ( L-L' ) 125 A gL/ gG Temporary overvoltage ( TOV) ( UT) 440 V / 5 sec. TOV characteristic withstand Operating temperature range ( parallel connection) ( TUP) -40° C...+ 80° C Operating temperature range ( series connection) ( TUS) -40° C...+ 60° C Operating state/ fault indication green / red Number of ports 1 Cross-sectional area ( L/ N, L' / N' , N/ PE ( N) ) ( min.) 10 mm2 solid/ flexible Cross-sectional area ( L/ N, N/ PE( N) ) ( max.) 50 mm2 stranded/ 35 mm2 flexible Cross-sectional area ( L' / N' ) ( max.) 35 mm2 stranded/ 25 mm2 flexible For mounting on 35 mm DIN rails acc. to EN 60715 Enclosure material thermoplastic, red, UL 94 V-0 Place of installation indoor installation Degree of protection IP 20 Capacity 2 module( s) , DIN 43880 Approvals VDE, KEMA, UL 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 Extended technical data: Use in installations with prospective short-circuit currents of more than 50 kArms ( tested by VDE) – Maximum prospective short-circuit current 100 kArms ( 220 kApeak) – Limitation/ extinction of mains follow currents up to 100 kArms ( 220 kApeak) – Max. backup fuse ( L) up to IK = 100 kArms ( ta d 0.2 s) 500 A gL/ gG – Max. backup fuse ( L) up to IK = 100 kArms ( ta d 5 s) 315 A gL/ gG

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