DAM2 Electronic MCCB

Introduction

DAM2E CM1 Electronic adjustable moulded case circuit breaker has three protection function, the circuit breaker with utilization category B connected with other short-circuit protection device in the same circuit has completely optional under short circuit circumstance; With five tripping features, the user can set the equipment through the shunt release according to the load current, electronic shunt release is powered by circuit breaker itself; current signal and control power is from the circle circuit transformer installed in the circuit breaker; With fire protection shunt release for alarming but not trip, when the load current is overloaded, the circuit breaker does not trip, and output the passive contact, driving the corresponding alarm device; The dimensions and specifications are the same as those of DAM2 CM1 series MCCB, the installation can be changed.

Application

1. The elevation of the installation site is not more than 2000m.
2. The ambient temperature is not more than +40℃, and the average temperature within 24h is not more than +35℃, the lower limit of the ambient temperature is -5℃.
3. When the max temperature is +40℃, the relative humidity of air is not more than 50%, can allow a higher relative humidity at a lower temperature, such as 90% at 20℃, special measures should be taken for the condensation produced occasionally on the product due to temperature changes.
4. The pollution degree is 3.
5. The circuit breaker installation of main circuit category is class III, the installation category of auxiliary circuit and control circuit not connect to the main circuit is II.
6. Use category is A or B.

Important information

1) No code for circuit breaker for distribution, 2 for circuit breaker for protecting motor.
2) No code for handle direct operation, P for electric operation, Z for the rotating handle.
2. Classification
A. According to the rated limit short-circuit breaking capacity, divided into standard (S), high breaking (H);
B. According to the mode of connection, divided into three types: front connection, rear connection and plug-in;
C. According to the pole, divided into three-poles and four-poles. The N-phase of the 4-pole products is not equipped with the overcurrent release, and the N-phase is on-off with the other phase;
D. According to the accessory device, divided into with accessory device and without accessory device: accessory device is divided into internal and external devices: the internal device has shunt release, under voltage release, auxiliary contact, alarm contact, the external device has rotating handle operating mechanism, electric operation mechanism etc..

Note: 1. DAM2E-100, 225 only have accessories of 308, 310, 320, 330, 328;
2. DAM2E-400 only have 3-pole accessories of 308, 310, 320, 330, 328;
3. DAM2E-400 only have no 4-pole accessories of 350, 318, 338, 348, 378.

in the setting, the dial switch must be set in place!

1. Adjust overload long delay action current Ir1, according to the different circuit breaker rated current, 4-10 files can be adjusted;
2. Adjust long delay action time t1, 4 files can be adjusted;
3. Adjust short-circuit short-delay action current Ir2, 9 files can be adjusted;
4. Adjust short delay action time t2, 4 files can be adjusted;
5. Adjust short-circuit instantaneous action current Ir3 action, 9 files can be adjusted;
6. Adjust pre-alarm action current Ir0, 7 files can be adjusted.

Technical parameters