System pro M compact® - Piti Group

Systempro M compact ®Selection tablesLoad management devicesE 450 priority switchesE 450E 450 priority switchesThe priority switch is used in wiring systems where existing lead cross sections or the size of thepower supply service box do not allow for simultaneous operation of two powerful loads (e.g. storageheating and flow-type heater).The priority switch disconnects the long-term load (storage heating) for as long as the short-termconsumer (flow-type heater) is switched on.The coil of the priority switch is connected in series to the short-term load. When this load is switchedon, the NC contact of the priority switch disconnects e.g. the heating system contactor.2CSC400457F0201Rated Power Order Bbn Price Price Weight Packcurrent loss details 4016779 1 piece group 1 piece unitrangeW Type code Order code EAN kg pc.For pneumatically controlled flow-type heaters6,7 ... 39 A 2.4 E 451- 5.7 A 2CDE160000R0901 41590 3 0.1 10For electronically controlled flow-type heaters6.7 ... 39 A 2.4 E 452-5.7 A 2CDE160010R0901 20950 2 0.1 107SK 0078 Z 00Overall dimensions ...................... pag. 12/38Technical characteristics E 451-5.7 E 452-5.7Operating coilRange of rated current6.7 … 39 Aequivalent to1.5 … 9 kW at 230 V, 4.6 … 27 kW at 230/400 VThreshold current3.1 … 5.3 AOFF delay (max.) 0 main half waves 2 main half wavesMax. continuous current43 ATherm. continuous capacityat 40 °C/104 °F5 WContact assemblyControl contact1 NC contactRated contact current at 250 V1 AContact materialsolid silverMax. switching voltage400 VMax. switching capacity230 VAMax. switched current1 AMax. inrush current peak5 AElectr. service life> 10 5 operationsMechanical service lifeca. 2 x 10 6 operationsMax. electrical switching rateca. 1800 operations/hourON duration 100 %Ambient temperature – 20 °C/– 4 °F to + 40 °C/104 °FResponse time10 … 20 msRelease time 5 … 20 ms 20 msTest voltage contact/coil2.5 kVClearance and creepage distance C/250 V AC cording to IEC 669-1-23Degree of protection IP 40Protection against electric shock according to DIN VDE 0106 Part 100 (BGV A2)Terminal contact series coil up to 16 mm 2 , control contact up to 2.5 mm 27/2ABB