E-T-A 446-K-H-N-125A

High Performance Thermal-Magnetic Circuit Breakers 446/447/449 Description 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. Typical applications Heavy duty vehicles, battery systems, process control. 1 446-... 447-... 449-... Ordering information Type No. Technical data 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 Voltage rating DC 28 V Terminal design, mounting Current rating range type 446: 30...400 A K screw terminals M12, insertion nuts M8 type 447: 100...400 A Manual release type 449: 125...500 A H standard Auxiliary circuit 10 A Version N general application (type 446 only) Electrical remote disconnection (-FA) FN general application (types 447 and 449 only) operating voltage DC 12 V or DC 24 V Auxiliary contacts (optional) operating current approx. 18 A or 12 A max. pulse time 10 ms < t < 20 ms / t > 10 s Si 2 electrically separate auxiliary contacts ON OFF switching time < 20 ms with screw terminals M3.5 and blade terminals DIN 46244-C-MS-S Typical life 1,000 operations at I N Remote trip (optional) 2,000 operations mechanical FA24 DC 24 V coil voltage Ambient temperature -55...+75 °C (-67...+167 °F) Current ratings Insulation co-ordination Overvoltage category 30...400 A type 446 (IEC 60664) pollution degree 2 / 3 100...400 A type 447 Resulting in a rated impulse withstand 125...500 A type 449 voltage of 500 V at DC 28 V to DIN EN 60664-1 447 - K - H - FN - ... - ... - 400 A ordering example Dielectric strength The exact part number required can be built up from the table of choices (IEC 60664 and 60664A) test voltage shown above. Ordering references for optional features should be omitted if not operating area AC 1,500 V required. main circuit to auxiliary contacts AC 1,500 V Insulation resistance > 100 MΩ (DC 500 V) Standard current ratings and typical internal resistance values Interrupting capacity I 10,000 A cn Degree of protection operating area IP40 Internal Internal Current Current (IEC 60529/DIN 40050) terminal area IP00 ratings (A) resistance (Ω) ratings (A) resistance (Ω) Vibration to VG 95210, sheet 19, Type 446: Type 447: IEC 60068-2-6, test Fc: 30 0.006 100 < 0.002 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) 40 0.0048 125 < 0.001 Shock to VG 95210, sheet 28, 50 0.0038 160 < 0.001 IEC 60068-2-27, test Ea: 60 0.0028 225 < 0.001 without aux. contacts: 50 g (11 ms) 70 0.0025 300 < 0.001 with auxiliary contacts: 20 g (11 ms) 80 0.0023 400 < 0.001 Corrosion 96 hours at 5 % salt mist to VG 95210, sheet 2, 90 0.0019 Type 449: IEC 60068-2-11, test Ka 100 0.0016 125 < 0.001 Humidity 240 hours at 95 % RH 125 < 0.001 160 < 0.001 to VG 95210, sheet 7, IEC 60068-2-3, test C 150 < 0.001 225 < 0.001 Mass approx. 850 g 170 < 0.001 315 < 0.001 200 < 0.001 350 < 0.001 Approvals 225 < 0.001 400 < 0.001 250 < 0.001 500 < 0.001 Authority Standard Rated voltage Current ratings 300 < 0.001 350 < 0.001 only with 50 % ON duty UL UL 1077 DC 28 V up to 400 A Type 446/ 400 < 0.001 Type 447 CSA C22.2 No 235 DC 28 V up to 400 A UL UL 1077 DC 28 V 100...350 A Type 449: 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 DC 28 V 100…350 A CSA C22.2 No 235 without notice is reserved.Product markings may not be exactly as the ordering codes. DC 28 V 125...500 A Errors and omissions excepted. Bw 95345, part 15 1729 www.e-t-a.de 1 High Performance Thermal-Magnetic Circuit Breakers 446/447/449 Dimensions Internal connection diagrams 447-K-H-FN-Si-FA (<350A) Si line 1 line 1 5 7 449-K-H-FN-Si-FA (<350A) 4 6 recommended link for FA coil hex nut M8 or 5/16"-18-NC 60±0.2 > > protection 14 mm/.551 in. usable thread length I I tightening torque max. 3.5 Nm ø26 8 FA 2 2 ø20 1 FA-terminal (8) Typical time/current characteristics at +23 °C/+73.4 °F hex nut N/C 4/5 ISO 4032-M12-Cu2-E1P 106 tightening torque max. 10 Nm 446-... DC N/O 6/7 10000 lock washer DIN 137-B12- X12CrNi 177 35±0.2 1000 hex screw 100 ISO 4017-M12x30-Cu2-E1P 170 100 140 current rating in A EIN ON 10 AUS OFF AUS OFF 28 V DC 1 12 43.5 12 0.1 flat head screw ISO 1580-M3,5x5 tightening torque max. 0.55 Nm 0.01 mm This is a metric design and millimeter dimensions take precedence ( ) inch 0.001 12 46 8 10 20 40 60 80100 … times rated current Typical time/current characteristics 447-… DC 449-… 125…400 ADC 449-… 500 A (50% ON duty/60 min) DC 10000 10000 10000 1000 1000 1000 100 100 100 10 10 10 1 1 1 0.1 0.1 0.1 0.01 0.01 0.01 0.001 0.001 0.001 12 46 8 10 20 40 60 80100 12 46 8 10 20 40 60 80100 12 46 8 10 20 40 60 80100 … times rated current … times rated current … times rated current +75 °C +23 °C -55 °C +167 °F +73.4 °F -67 °F Circuit breakers with remote disconnection facility will trip 10% faster . 2 www.e-t-a.de 1729 104 23 OFF Trip time in seconds ON max. 77 15 42 23.5 6 4 2 Trip time in seconds 30 40 Trrip time in seconds Trip time in seconds