| Brand | MV Switchgear Accessories |
| Model NO. | GRM3DC Molded Case Circuit Breaker |
| Rated normal current | 250A |
| Series | GRM3DC |
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 |
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Rated current of shell frame grade Inm(A) |
250 |
320 |
400 |
500 |
630 |
800 |
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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 |
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Pole Number |
2/3 |
2/3 |
2 |
4 |
2 |
2 |
2 |
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Rated working voltage Ue(V)DC |
500 |
1000 |
1500 |
500 |
1000 |
1500 |
1500/1600 |
1000 |
1250 |
1500 |
1500/1600 |
1500/1600 |
1500/1600 |
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Rated insulation voltage Ui (V) |
DC2300 |
DC2300 |
DC2300 |
DC2300 |
DC2300 |
DC2300 |
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Rated impulse withstand voltage Uimp (kV) |
12 |
12 |
12 |
12 |
12 |
12 |
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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 |
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Running short-circuit breaking capacity lcs (kA) |
Ics=100%Icu |
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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) |
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Mechanical life(Total times) |
20000 |
20000 |
10000 |
5000 |
5000 |
5000 |
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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 |
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Standard |
IEC 60947-2、GB/T14048.2 |
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Allowable ambient temperature |
-35℃~+70°C |
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Levels of protection |
IP20 |
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Quality certificate |
CCC、CB、TUV、CE certificate |
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With accessories |
Auxiliary,alarm,off load, Hand operation, Electric operation |
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Arcing distance (mm) |
≤50 (Zero arc,with arcing cover) |
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Transient Action value |
1O ln |
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Overall dimensions LxWxH(mm) |
L |
180 |
180(3P) |
258 |
250 |
250 |
250 |
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W |
76(2P)/107（3P) |
76(2P)/107（3P) |
198 |
124(2P)/182(3P） |
124(2P)/182(3P） |
124（2P)/182(3P) |
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H |
105 |
105 |
107 |
165 |
165 |
165 |
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Installation way |
fixed type,plug-in type |
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The core advantages focus on four dimensions: protection accuracy, scenario adaptability, durability and installation convenience:
1.Multiple precise protections to eliminate DC fault risks
2.Full-scenario adaptability to meet diversified DC power distribution needs
3.High-durability design to reduce later operation and maintenance costs
4.Modular installation to improve the integration efficiency of power distribution systems
The GRM3DC Molded Case Circuit Breaker is an electrical switchgear specially designed for DC power distribution system protection, with a rated working voltage ranging from 1000VDC to 1500VDC, a rated current range of 100A to 1250A, and a maximum rated breaking capacity of up to 80kA. Integrating three core functions including overload long-delay protection, short-circuit instantaneous protection and reverse connection protection, this product adopts a high-strength flame-retardant PC/ABS alloy shell and a modular structure design. It is suitable for DC power distribution scenarios such as PV power stations, energy storage systems and communication base stations, and can be directly matched with combiner boxes, inverters and energy storage converters to ensure the stable and safe operation of DC systems.
