Claire
Mr.Fu
Claire
SJKM1LY Auto Reclosing Molded Case Circuit Breaker
Type Designation
| 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) |
product Display
Technical Parameters
| 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 | |||||
| Rated Impulse Withstand Voltage Uimp (kV) | 8 | |||||
| Arc Distance (mm) | ≥50 | ≥50 | ≥100 | ≥100 | ≥100 | |
| Ultimate Short-circuit Breaking Capacity Icu(kA) | 50 | 50 | 35 | 35 | 65 | |
| Service Short-circuit Breaking Capacity Ics(kA) | 35 | 35 | 25 | 25 | 65 | |
| Utilization Category | B | A | B | B | B | |
| Rated Short-time Withstand Current Icw(kA/s) | 5kA/0.5s | 3kA/1s | 5kA/1s | 5kA/1s | 8kA/1s | |
| Rated Residual Short-circuit Making and Breaking Capacity Icm(kA) | ≥5%Icu | |||||
| Residual Current Operating Characteristics | AC Type | |||||
| Rated Residual Operating Current I△n | 50-1000mA（Adjustable） | 50-900mA （Step Adjustable） | 50-1000mA（Adjustable） | |||
| Auto-reclosing Time (s) | 20s-60s | |||||
| Operating Performance (operations) | Energized | 1500 | 1000 | 1000 | 1000 | 500 |
| De-energized | 8500 | 7000 | 4000 | 4000 | 2500 | |
| Total Operations | 10000 | 8000 | 5000 | 5000 | 3000 | |
| Delay Time (ms) | ≤40ms | |||||
| Communication Delay Time (ms) | ≤200ms | |||||
| Lockout Time | 10s-250s | |||||
Operating Performance of the Release
1. Overload Protection Characteristics(Inverse Time Delay Operation)
| Rated Operating Current of the Release (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
2. Setting Value of Instantaneous Overcurrent Release Current
| Rated Current of Integrity Level Inm(A) | Rated Current Multiple | Conventional Time |
| 100 | 10 In±20% | <0.2s |
| 250 | 10 In±20% | <0.2s |
| 400 | 10 In±20% | <0.2s |
| 630 | 10 In±20% | <0.2s |
| 800 | 10 In±20% | <0.2s |
Overall Dimensions and Installation Dimensions
| Model | Overall Dimensions | Installation Dimensions | Mounting Screw Cutout Dimensions (mm) | ||||||||||
| L | W | H | H1 | H2 | L2 | L3 | W2 | W3 | W4 | L1 | W1 | ||
| 100 Type | 231 | 120 | 118 | 62 | 50 | 264.6 | 213.5 | 30 | 30 | 30 | 211 | 60 | A4×40 |
| 250 Type | 240.5 | 141 | 136.5 | 83 | 47.5 | 300.3 | 220.1 | 35.1 | 35.1 | 35.1 | 201.5 | 70 | A4×45 |
| 400 Type | 335 | 195 | 186.5 | 97.5 | 83 | 380.2 | 303 | 47.8 | 47.8 | 60.3 | 272 | 93.5 | A5×60 |
| 630 Type | 355.5 | 240.5 | 194.5 | 105 | 83 | 396.6 | 319.45 | 58 | 58 | 70.5 | 284 | 116 | A5×65 |
| 800 Type | 355.5 | 240.5 | 194.5 | 105 | 83 | 396.6 | 319.45 | 58 | 58 | 70.5 | 284 | 116 | A5×65 |