System pro M compact® - Piti Group

Systempro M compact ®Technical detailsDouble tampoprinting of S 200 PMCBsDouble tampoprinting of S 200 PThe breaking capacityFor the modular circuit-breakers realized according to IEC/EN 60898 standard, the breaking capacityis expressed by the Icn quantity, indicated in Ampere, contained within a rectangle on the frontside of the device.The max value of rated short-circuit capacity (Icn) considered by this standardis 25000 A.Always according to IEC/EN 60898 standard, the ratio between the service short-circuit capacity(Ics) and the rated short-circuit capacity (Icn) – K factor – shall have to be conforming to the enclosedtable.IcnK< 6000 A 1> 6000 A< 10000 A 0.75 (*)>10000 A 0.5 (**)(*) Ics minimum value: 6000 A(**) Ics minimum value: 7500 ALimiting classThe Manufacturer of the circuit-breaker has the right to declare the energy limiting class of thedevice. According to IEC/EN 60898 standard, the Manufacturer classifies the circuit-breaker with alimiting class which ranges from 1 to 3 according to the I t values let though by the circuit-breakerfor rated current up to 16 A and rated currents exceeding 16 A up to 32 A included, accordingto the table below.Limited energy classesShort-circuit 1 2 3rated capacity I 2 t max (A 2 s) I 2 t max (A 2 s) I 2 t max (A 2 s)(A) B-C Type B Type C Type B Type C Type3000 No 31000 37000 15000 180004500 limits 60000 75000 25000 300006000 are 100000 120000 35000 4200010000 specified 240000 290000 70000 8400010Limited energy classesShort-circuit 1 2 3rated capacity I 2 t max (A 2 s) I 2 t max (A 2 s) I 2 t max (A 2 s)(A) B-C Type B Type C Type B Type C Type3000 No 40000 50000 18000 220004500 limits 80000 100000 32000 390006000 are 130000 160000 45000 5500010000 specified 310000 370000 90000 110000For instance, a circuit-breaker with rated current 16 A, B characteristic, with short-circuit ratedcapacity equal to 6 kA belongs to class 3 if it lets through max 35000 A 2 s of specific energy.The limiting class value (1, 2 or 3) is indicated on the front side of the device, within a square, inaddition to the breaking capacity.As regards the miniature circuit-breakers S200P series, two different breaking capacities areindicated on the front side of the device, contained in a rectangle.The breaking capacity indicated above the operating toggle is the one of the device, according toIEC/EN 60898 standard, the breaking capacity indicated under the lever is regarding the limitingclass which, according to the standard, can be expressed only for values up to 10000 A.Selection tables ............................... pag. 2/210/76 ABB