Mingri Electric
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| No. | Description |
| 1 | Manufacturer Code |
| 2 | Intelligent Circuit Breaker |
| 3 | Design Serial Number |
| 4 | With Residual Current Protection |
| 5 | Rated Frame Current Level |
| 6 | Three-phase Four-wire (3P+N) |
| 7 | Function Extension: None: Economy Type (Overcurrent Non-adjustable); S: Standard Type (Overcurrent Adjustable) |
| Model Specification | M1LY-125A | M1LY-250A | M1LY-400A | M1LY-630A | M1LY-800A | |
| Number of Poles | 3P+N | 3P+N | 3P+N | 3P+N | 3P+N | |
| Frame Current (A) | 125A | 250A | 400A | 630A | 800A | |
| Rated Operational Voltage Ue (V) | AC400 50Hz | |||||
| Rated Insulation Voltage Ui (V) | 1000V | |||||
| Ultimate Short-circuit Breaking Capacity Icu(kA) | 50 | 50 | 35 | 35 | 65 | |
| Rated Residual Operating Current I∆n | 50-1000mA | 50-900mA (Step Adjustable) | 50-1000mA | |||
| Auto-reclosing Time (s) | 20s-60s | |||||
| Rated Operating Current (A) | Release (Ambient Temperature 40℃) | |
| 1.05In (Cold State) | 1.30In (Hot State) | |
| In≤63A | No operation for ≥1h | Operation in <1h |
| In>63A | No operation for ≥2h | Operation in <2h |
Calculation of overload long-delay time: T1 = (6lr/1)² × Tr1
| Model | L | W | H | L1 (Inst.) | W1 (Inst.) | Screw Cutout |
| 100 Type | 231 | 120 | 118 | 211 | 60 | A4×40 |
| 250 Type | 240.5 | 141 | 136.5 | 201.5 | 70 | A4×45 |
| 400 Type | 335 | 195 | 186.5 | 272 | 93.5 | A5×60 |
| 630 Type | 355.5 | 240.5 | 194.5 | 284 | 116 | A5×65 |
| 800 Type | 355.5 | 240.5 | 194.5 | 284 | 116 | A5×65 |
