1 description typical applications ordering information approvals technical data single pole thermal-magnetic circuit breakers with tease-free, trip-free, press-to-reset snap action mechanism and special dual button manual release which avoids the danger of unintended disconnection (m-type tm cbe to en 60934). surface mounted, compact design available with fast acting, standard and delayed switching characteristics. options include auxiliary contact and remote electrical disconnection. heavy duty vehicles, battery systems, process control. 446-... 447-... 449-... standard current ratings and typical internal resistance values type no. 446 single pole base mounting, fast characteristic curve 447 single pole base mounting, medium delay characteristic curve 449 single pole base mounting, delayed characteristic curve terminal design, mounting k screw terminals m12, insertion nuts m8 manual release h standard version n general application (type 446 only) fn general application (types 447 and 449 only) auxiliary contacts (optional) si 2 electrically separate auxiliary contacts with screw terminals m3.5 and blade terminals din 46244-c-ms-s remote trip (optional for types 447 and 449) fa24 dc 24 v coil voltage current ratings 30...400 a type 446 100...400 a type 447 125...500 a type 449 447 - k - h - fn - ... - ... - 400 a ordering example the exact part number required can be built up from the table of choices shown above. ordering references for optional features should be omitted if not required. voltage rating dc 28 v current rating range type 446: 30...400 a type 447: 100...400 a type 449: 125...500 a auxiliary circuit 10 a electrical remote disconnection (-fa) operating voltage dc 12 v or dc 24 v operating current approx. 18 a or 12 a max. pulse time 10 ms < t on < 20 ms / t off > 10 s switching time < 20 ms typical life 1,000 operations at i n 2,000 operations mechanical ambient temperature -55...+75 c (-67...+167 f) insulation co-ordination rated impulse pollution (iec 60664 and 60664a) withstand voltage degree 1.5 kv 3 dielectric strength (iec 60664 and 60664a) test voltage operating area ac 1,500 v main circuit to auxiliary contacts ac 1,500 v insulation resistance > 100 m (dc 500 v) interrupting capacity i cn 10,000 a degree of protection operating area ip40 (iec 60529/din 40050) terminal area ip00 vibration to vg 95210, sheet 19, iec 60068-2-6, test fc: without aux. contacts: 10 g (56-500 hz), 0.76 mm (10-55 hz) with auxiliary contacts: 4 g (56-500 hz), 0.30 mm (10-56 hz) shock to vg 95210, sheet 28, iec 60068-2-27, test ea: without aux. contacts: 50 g (11 ms) with auxiliary contacts: 20 g (11 ms) corrosion 96 hours at 5 % salt mist to vg 95210, sheet 2, iec 60068-2-11, test ka humidity 240 hours at 95 % rh to vg 95210, sheet 7, iec 60068-2-3, test c mass approx. 850 g all dimensions without tolerances are for reference only. in the interest of improved design, performance and cost effectiveness the right to make changes in these specifications without notice is reserved.product markings may not be exactly as the ordering codes. errors and omissions excepted. current ratings (a) internal resistance ( ) current ratings (a) internal resistance ( ) type 446: type 447: 30 0.006 100 < 0.002 40 0.0048 125 < 0.001 50 0.0038 160 < 0.001 60 0.0028 225 < 0.001 70 0.0025 300 < 0.001 80 0.0023 400 < 0.001 90 0.0019 type 449: 100 0.0016 125 < 0.001 125 < 0.001 160 < 0.001 150 < 0.001 225 < 0.001 170 < 0.001 315 < 0.001 200 < 0.001 350 < 0.001 225 < 0.001 400 < 0.001 250 < 0.001 500 < 0.001 300 < 0.001 only with 50 % on duty 350 < 0.001 400 < 0.001 authority standard rated voltage current ratings type 446/ type 447 ul ul 1077 dc 28 v up to 400 a csa c22.2 no 235 dc 28 v up to 400 a type 449: ul ul 1077 dc 28 v 100...350 a csa c22.2 no 235 dc 28 v 100350 a bw 95345, part 15 dc 28 v 125...500 a high performance thermal-magnetic circuit breakers 446/447/449 www.e-t-a.de 1646 1
2 1 46 1 4 1 1 1 1 1 1 1 1 6 1 4 12 43.5 100 n/o 6/7 ?20 13 hex nut m8 or 5/16"-18-nc 14 mm/.551 in. usable thread length tightening torque max. 3.5 nm 60 30 40 hex screw iso 4017-m12x30-cu2-e1p ?26 23 15 6 58 104 23.5 4 2 35 106 hex nut iso 4032-m12-cu2-e1 p tightening torque max. 10 nm lock washer din 137-b12- x12crni 177 off on n/c 4/5 fa- terminal (8) 170 140 current rating in a 11 aus off aus off ein on flat head screw iso 1580-m3.5x5 tightening torque max. 0.55 nm blade terminal din 46244-c-ms-s 1.58 2.36 1.18 1.02 .787 .906 .591 .236 .512 4.09 .157 .925 2.28 .079 1.38 3.94 6.69 5.51 .433 .472 1.71 4.17 line 1 5 4 7 6 i > 2 line 1 i > 2 si fa 8 recommended link for fa coil protection ? times rated current -55 c -67 f +23 c +73.4 f +75 c + 167 f trip time in seconds ? times rated current trip time in seconds ? times rated current trip time in seconds 12 46 8 10 20 40 10000 1000 100 10 1 0. 1 0.01 0.001 60 80 100 12 46 8 10 20 40 10000 1000 100 10 1 0. 1 0.01 0.001 60 80 100 12 46 8 10 20 40 10000 1000 100 10 1 0. 1 0.01 0.001 60 80 100 1 (50% on duty/60 min) circuit breakers with remote disconnection facility will trip 10% faster . typical time/current characteristics 446-... dc this is a metric design and millimeter dimensions take precedence ( mm ) inch www.e-t-a.de high performance thermal-magnetic circuit breakers 446/447/449 1646 1
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