產品詳情 Product details

ST-M1-1500 DC MOULDED CASE CIRCUIT BREAKER

1:Tripping rype:
2:08-Alarm contacts 10-shunt trip 20-Auxiliary contact20-Auxiliary contact、Alarm contacts
3:thermal-electromagnetic trip

Work environment

.Generlly,the elevation does not exceed 2000m. When the elevation exceeds 200m, itshall be modified according to the parameters in table 5.

.ambient airtemperature: normal use of the surrounding air temperature does not exceed 70'c , ambient air temperature limit-35 c.Whentheairtemperature exceeds the normal range , the rated working current can be modified according to the parameters in table 4.
.humidity: ambient temperature under the condtion of + 40-℃ , air relative humidityis not more than 50%, such as the temperature is reduced, can beused in high humidity conditions.The average monthly relative humidity in the wettest month is 90%.;
.installation categories: categories for Ⅲl main circuit installation, auxiliary circuit, control circuit for'll ;

.pollution level: level 3;
.the biggest Angle:22.5°;
.where there is no explosive hazard in the medum, and the medium is not suficient to corrode the melal nd destroy the insulating gas and conductivedust;
. where there is no rain or snow.

Mode and attachment code
.release model number and its meaning;
.300:; represents the circuit breaker body with thermal-electromagnetic tripping device.

. annex codes are shown in table 1.

Technical Date

5.1Technical Date table 2.

5.2.1Protective properties
Circuit breaker thermodynamic tripping device has inverse time characteristic,The delay characteristics are shown in table3

5.2.2Protection instantaneous adju ustable range:6Inwith accuracy of 20%.

5.2.3Factory default setting is 1ln.
5.3Rated current(Ay: 250,315,350,400;

5.4bracked level current(A) : 400;
5.5The change of ambient air temperature on the tripping characteristic is modified as table4 ;

5.6when the emvironment temperature of 40'c,the seadials high more than 2000 melers, considering the insulation characteristics of airand coolingcapacity, tripping characteristics will have change, should be corrected,Shown in table ·

6.Installation of circuit breaker
6.1 in-line mode.upper in-ine or lower in-line can be adopled ,which will not afect the normaluse of the product and will not reduce capacty.

6.2 fixation mode: fixed fixation mode .Base plate, hollow plate, guide rail.
7.Outine and mounting dimensions.