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LB1Z-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 conform to IEC60947, GB14048.2 standard. Main specification:
| Frame Rated 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 | |||||
| 3 | DC440V | |||||
| 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 |