Cm1 Moulded Case Circuit Breaker

DAM2 series Moulded Case Circuit Breaker is new circuit breakers which have been designed and developed by the company using international advanced technology. The circuit breakers are of the following characteristics: compact size, high breaking capacity, short arc-over distance and shakeproof, is ideal products applied on land or ships.ApplicationDAM2 (CM1) series the rated insulation voltage of the circuit breaker is 800V,it is suitable for the distribution network of AC 50Hz / 60Hz, rated working voltage of 690V and rated current of 1250A, to distribute power and protect circuit and power equipment from being damaged caused by overload , short-circuit, under-voltage and other fault. Also for protection infrequent conversion of the circuits and infrequent start of motor and overload, short circuit, under voltage. DAM2 circuit breaker can be mounted vertically (upright) or horizontally (transverse). DAM2 MCCB is suitable for isolation and the symbol is " ". DAM2 MCCB meets the standard: IEC60947-2 "low-voltage switchgear and control equipment, Part 2: circuit breakers."Normal operating conditions1.Ambient air temperature: -5ºC~+40ºC, and average temperature in 24h is below +35ºC.2.Altitude: The altitude of the installation site is not more than 2000m.3.Atmospheric conditions: The air relative humidity in the highest temperature +40ºC is not more than 50%; In the low temperature can have higher relative humidity. The maximum average relative humidity is 90%, while the average monthly minimum temperature is +25ºC, and consider the temperature changes in product on the surface of the gel.4.Pollution Degree: 3.Selection of instructionsAccording to the pole, it classifies four types:Type A: N-pole without over-current release components, and N-pole has been connected all along, and does not act with other three poles to turn on or off;B-type: N-pole without over-current release components, and N-pole could act with other three poles (N-pole turn-on prior to turn-off);Type C: N-pole fixed with over-current release components, and N-pole could act with other three poles (N-pole turn-on prior to turn-off);Classification according to rated current of over-current release:DAM2-63 MCCB has nine: 6,10,16,20,25,32,40,50,63 A;DAM2-100 MCCB has nine: 16,20,25,32,40,50,63,80,100 A;DAM2-250 MCCB has seven: 100,125,140,160,180,200,225 ,250A;DAM2-400 MCCB has five: 225,250,315,350,400 A;DAM2-630 MCCB has three: 400,500,630 A;DAM2-800 MCCB has three: 630,700,800A;DAM2-1250 MCCB has three: 800,1000,1250A.Remark: 6A only has electromagnetic (instantaneous) type, is not recommended specifications.According to the wiring method: wiring in front of board, wiring on back of board, insertion type of the board.According to over-current release pattern: thermodynamic-electromagnetic (double) type, electromagnetic (instantaneous) type.According to the outfit, it has two types: with or without outfit.The outfit include inner accessories and outside accessories: The inner accessories have shunt release, under-voltage release, auxiliary contact and alarm contact. The outside accessories are turning handle operation mechanism, power-driven operation mechanism and so on.According to the breaking capacity: L-standard breaking type; M-second high breaking type; H-high breaking typeTechnical parameters1, Instantaneous action characteristic setting value of the circuit breaker for distribution is 10In±20%, DAM2-1250 is 7In±20%; Instantaneous action characteristic set value of the circuit breaker for motor protection is 12In ± 20%.2, The rated value of the circuit breaker in Table 2.3, In the ambient temperature of +40ºC, the circuit breaker for distribution over-current release action characteristics shown in Table 3, the circuit breaker for motor protection over-current release action characteristics shown in Table 4.Rated value of the circuit breakModelPoleRated current (A)Ratedoperatingvoltage (V)Ratedinsulationvoltage (V)Rated ultimate short - circuit breaking capacity (Icu)Flashoverdistance(mm)Test voltage (V)Icu (kA)Ics (kA)DAM2L-63310,16,20,25,32,40,50,63400500400×1.1025180DAM2M-633,45035DAM2L-1003,416,20,25,32,40,50,63,80,1004008003022≤50DAM2M-1002,3,45035DAM2H-10038550DAM2L-1003,4690105DAM2M-1002,3,42010DAM2L-2253,4100,125,140,160,180,200,2254008003525TXCM1-2252,3,45035DAM2H-22538550DAM2L-2253,4690105DAM2M-2252,3,42010DAM2L-4003225,250,315,350,4004008005035≤100DAM2M-4003,46542DAM2H-400310065DAM2L-4003690158DAM2M-4003,42010DAM2L-6303400,500,6304008005035DAM2M-6303,46542DAM2H-630310065DAM2L-63036910158DAM2M-6303,42010DAM2M-8003630,700,8004008007550DAM2H-800310065DAM2M-800346903015DAM2-12503800,1000,12504008008542DAM2-125036902512.5Note: 2-poles, 4-poles circuit breakers, divided into L, M, H, they have the same breaking index as M-type.Characteristics of inverse time breaking action of circuit breakers over-current release for power distribution when every pole is power-on at the same timeNo.Test currentI/InSet timeInitial state1Convent