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GRM3DC 320A Molded Case Circuit Breaker

Through many years of dedicated research on the actual system operation situation and customer needs for new energy at home and abroad, UNITE Electric has developed the GRM3 (DC)-(HU) series of AC and DC Molded Circuit Breakers for New Energy.

Description

Product Characteristic
– for the GRM3-(HU) series Molded Circuit Breaker, The maximum rated voltage is 1140V, and the maximum current is 400A.
– for GRM3-(HU) series Molded Circuit Breaker, in the voltage of 800V, the maximum breaking capacity is 36.5kA, which can ensure reliable short-circuit protection of the system.
– for GRM3DC-(HU) series Molded Circuit Breaker, The maximum rated voltage is 1500V, and the maximum current is 400A.
– for GRM3DC-(HU) series Molded Circuit Breaker, in the voltage of 1500V, the maximum breaking capacity is 20kA, which can ensure reliable short-circuit protection of the system.

Standard
GRM3(DC)-(HU) series AC/DC molded case circuit breaker meets the following standards IEC60947-1 GB/T14048.1 General Provisions IEC60947-2 GB/T14048.2 circuit breaker

Use and Maintenance
Various characteristics and accessories of the circuit breaker shall be fixed by the manufacturer and shall not be adjusted in the use. Under the compliance with custody and use conditions, from the date of 24 months from the manufacturer delivery and in the situation of the circuit breaker intact seals, if the product is damaged or not used normally due to manufacturing quality problems, the manufacturer shall be responsible for replacement and repair without charge.

Applied Environment
1. The altitude is not higher than 2,000 m;
2. It is resistant to damp air (three-proof type)①
3. It is resistant to the influence of salt fog and oil fog (three-proof type);
4. It is resistant to the influence of mold (three-proof type);
5. In a medium without explosion risk, the medium is not enough to corrode the metal and destroy the insulation of the gas and conductive dust.
Note: the three-prevention products should be specially customized, please indicate TH.

Model GRM3DC-250HU GRM3DC-320HU GRM3DC-40OHU GRM3DC-50OHU GRM3DC-630HU GRM3DC-80OHU
Rated current of shell frame grade Inm(A) 250 320 400 500 630 800
Rated current In(A) 63,80,100,125,140,160,180,200,225,250,280,315,320 63,80,100,125,140,160,180,200,225,250,280,315,320 225,250,280,300,315,350,400 500 500,630 700,800
Pole Number 2/3 2/3 2 4 2 2 2
Rated working voltage Ue(V)DC 500 1000 1500 500 1000 1500 1500/1600 1000 1250 1500 1500/1600 1500/1600 1500/1600
Rated insulation voltage Ui (V) DC2300 DC2300 DC2300 DC2300 DC2300 DC2300
Rated impulse withstand voltage Uimp (kV) 12 12 12 12 12 12
Extreme short-circuit breaking capacity Icu (kA) 50 20 20 50 20 20 20 40 25 10 20 40 25 10 20 40 25 10 20 40 25 10
Running short-circuit breaking capacity lcs (kA) Ics=100%Icu
Wiring mode Upper in and lower out, lower in and upper out (2P, 320/3P) Lower in and lower out, upper in and upper out (3P)
Mechanical life(Total times) 20000 20000 10000 5000 5000 5000
Electrica life(Total times) 3000 2000 1500 3000 2000 1500 1000 1000 700 500 1000 1000 700 500 1000 1000 700 500 1000 1000 1700 500
Insolation feature yes
Standard IEC 60947-2、GB/T14048.2
Allowable ambient temperature -35℃~+70°C
Levels of protection IP20
Quality certificate CCC、CB、TUV、CE certificate
With accessories Auxiliary,alarm,off load, Hand operation, Electric operation
Arcing distance (mm) ≤50 (Zero arc,with arcing cover)
Transient Action value 1O ln
Overall dimensions LxWxH(mm) L 180 180(3P) 258 250 250 250
W 76(2P)/107(3P) 76(2P)/107(3P) 198 124(2P)/182(3P) 124(2P)/182(3P) 124(2P)/182(3P)
H 105 105 107 165 165 165
Installation way fixed type,plug-in type

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