1. Application:
L7-63 Series DC Miniature Circuit Breaker, apply to rating current 63A or less, Direct current rating voltage 250V and 440V. It is mainly used for the overloading and short circuit protection in DC distribution system equipment and electric equipment. It can be widely used in electric, post, traffic, mining enterprise and different kinds of fields. In present China, our products in the case grade rating voltage is highest compared to the same products.
Products according IEC60947, GB14048.2, IEC60898.2 standard.
2. Characteristic
L7-63 DC circuit breaker is made up of case, operation mechanism, thermal overloading trip, electromagnetic trip contact system, arc system etc. It has overloading and short circuit protection, unique-design structure and strong permanent magnetism arc system make the product has 6KA short circuit capability. Long mechanical life over 20000 times and beautiful shape. It can be connected with DIN rail named TH35-7.5 standard stainless type and has the below personality: The handle is designed on the top of the front, people will feel safe and comfortable when operating. When connecting, pay attention to "+, -" poles; The power goes in from the top and comes out from the underside which is applied with power entrance character. Convenient for installation and saving cables. It is used for 440V circuit 3 poles circuit breaker to connect front loop for two poles serial connection
| Crust Grade Rating Current Imm(A) |
Pole |
Rating Voltage (V) |
Rating Current In(A) |
Rated limit short circuit capability |
Instantaneous trip |
| Breaking Current Icu(A) |
Time(ms) |
| 63A |
1 |
DC125V |
1, 2, 3, 4, 5, 6, 10, 15, 16, 20, 25, 32, 40, 50, 63 |
6000 |
10 |
C, D |
| 2 |
DC250V/440V |
| 3 |
DC550V/800V |
| 4 |
DC1000V |
| Test |
Type |
Test Current |
Original State |
The tripping type does not release the time limit |
Result |
Remark |
| A |
C, D |
1.13In |
Cold State |
T≥1h (In≤63A) |
No trip |
|
| B |
C, D |
1.45In |
Following A Test |
T<1h (In≤63A) |
Trip |
Current up steadily in 5 |
| C |
C |
8In |
Cold State |
T≥0.1s |
No trip |
Shut auxiliary switch and connect the power |
| 12In |
T<0.1s |
Trip |
| D |
D |
10In |
Cold State |
T≥0.1s |
No trip |
| 14In |
T<0.1s |
Trip |
Our Services
| 1. Prompt reply: Any inquiry or questions would be replied within 24 hours. |
| 2. Quality Product: Manufacture company, each of the products is tested and calibrated. |
| 3. Hospitality: Offer smiling service and your visiting is highly welcomed |
| 4. Fast delivery: delivery time is within 3-7 days usually, other occasion depends on the order qty. |
Trade Information
| Trade Terms |
FOB ,CIF ,CFR,EXW,DDP |
| Payment terms |
T/T,L/C,Western union,Paypal,Escrow,MoneyGram |
| Payment conditions |
30% deposit in advance,70% balance before shipping. |
| Delivery time |
3-7working days after deposit,2-4 working days for inventory |
| Packing |
Neutral carton,Wooden case for large size |
| Shipping |
By sea,by air and by express delivery |
| Payment conditions |
30% deposit in advance,70% balance before shipping. |
| Delivery time |
3-7working days after deposit,2-4 working days for inventory |
| Packing |
Neutral carton,Wooden case for large size |
| Shipping |
By sea,by air and by express delivery |
Company Profile
Audited Supplier 
){kind=link}
){kind=link}