| Model | YZM3LE-250 | YZM3LE-800 |
| Pole Number | 1P+N, 3P+N |
| Rated Voltage Ue (V) | AC400 |
| Rated Current (A) | 125 | 250 | 400 | 630 | 800 |
| Rated Insulation Voltage Ui (V) | 1000 |
| Rated Impulse Withstand Voltage Uimp (kV) | 8 |
| Arcing Distance (mm) | ≤50 | ≤100 |
| Rated Ultimate Short-Circuit Breaking Capacity | 50/65 | 50/65 | 65/85 | 65/85 | 100 |
| Rated Service Short-Circuit Breaking Capacity | 35/50 | 35/50 | 50/65 | 50/65 | 65 |
| Rated Short-Time Withstand Current Icw | 5000A/1S | 10000A/1S |
| Residual Current Breaking Capacity I△m | 25%Icu |
| Residual Current Operating Characteristic | Type AC |
| Rated Residual Operating Current I△ (mA) | 50/100/200/300/500/800/1000, Automatic, OFF |
| Residual Operating Time Characteristic | Delayed, Non-delayed |
| Breaking Time (S) | Delayed: ≤0.3/≤0.5; Non-delayed: ≤0.3 |
| Limit Non-operation Time (S) | 2I△n: 0.06/0.2 |
| Automatic Reclosing Time (S) | 20～60 |
| Number of Energized Operations | 1500 | 1000 | 1000 | 500 |
| Number of De-energized Operations | 8500 | 7000 | 4000 | 2500 |
| Protection | Short-Time Delay Operating Current Setting Value Ir2 | 2Irl, 3Irl, 4Irl, 5Irl, 6Irl, 7Irl, 8Irl, 9Irl, 10Irl, 11Irl, 12Irl optional, default 6Irl |
| Short-Time Delay Time Setting Value ts | 0.03s～0.6s continuously adjustable, default 0.2S |
| Short-Circuit Short-Time Delay Operating Characteristic | No operation at ≤0.8Ir2, delayed operation at >1.2Ir2 (Calculation of short-circuit short-time delay time: T1 = (8Ir1/I)²×Ts, and T1≥300ms) |
| Instantaneous Operating Current Setting Value Ir3 | 4Irl, 5Irl, 6Irl, 7Irl, 8Irl, 9Irl, 10Irl, 11Irl, 12Irl, 13Irl, 14Irl optional, default 10Irl. |
| Short-Circuit Instantaneous Operating Characteristic | No operation at ≤0.8Ir3, operation at >1.2Ir3, tripping time 40mS |
| Overcurrent and Overload Protection | 40A～125A continuously adjustable, default 125A. | 100A～250A continuously adjustable, default 250A. | 200A～400A continuously adjustable, default 400A. | 315A～630A continuously adjustable, default 630A. | 320A～800A continuously adjustable, default 800A. |
| Overload Protection Characteristic | For In≤63A: 1.05In (cold state) ≥1h no operation, 1.30In (hot state) ＜1h operationFor In＞63A: 1.05In (cold state) ≥2h no operation, 1.30In (hot state) ＜2h operationCalculation of overload long-time delay time: T1 = (6Ir1/I)²×Tr1 |
| Delay Time Setting Value Tr1 | 3s～18s continuously adjustable, default 3S |
| Phase Failure Protection | 10～120V, default 120V, function off. |
| Neutral Loss Protection | Detect neutral wire breakage fault at the outlet end, cut off the fault or alarm according to preset settings |
| Overvoltage Protection | 242～350V, default 275V, function off. |
| Undervoltage Protection | 120～190V, default 165V, function off. |
| Automatic Reclosing | Equipped with one-time automatic reclosing, manual recovery required after latching, the function of enabling and disabling automatic reclosing can be set. |
| Residual Current Protection | 50mA, 100mA, 200mA, 300mA, 500mA, 800mA, 1000mA, OFF, Automatic optional; default 500mA for 125-400A, default 800mA for 30-800A |
| Residual Current Protection Operating Characteristic | No operation at 0.5I△n, operation at 0.8～0.9I△n |
| Overload Protection Characteristic | Non-delayed type (maximum breaking time): 1I△n: 0.3s; 2I△n: 0.15s; 5I△n: 0.04s; 10I△n: 0.04s.Delayed type: 1I△n: 0.5s; 2I△n: 0.2s; 5I△n: 0.15s; 10I△n: 0.15s. |
| Phase Failure Protection | For 3P+N products, the circuit breaker operates (≤1s) when any phase is missing |
| Remote Control | Remote Opening | Control circuit breaker opening via remote command |
| Remote Closing | Control circuit breaker closing via remote command |
| Measurement | Voltage | Accuracy ±1% |
| Current | Accuracy ±1% |
| Power | Accuracy ±1% |
| Electric Energy | Accuracy ±1% |
| Communication | Communication Interface | RS485 (standard configuration), HPLC optional. |
| Communication Protocol | DL/T 645-2007 |
| Communication Baud Rate | Default 9600bps, optional 2400bps, 4800bps, 9600bps |
| Human-Machine Operation | Display, Monitoring, Recording, Storage | With functions of displaying setting values such as residual current, and displaying, monitoring and recording trip times of residual current and fault phase of low-voltage power grid. |
| Display and Monitor Line Operating Voltage and Current | With functions of displaying and monitoring line operating current and voltage. Equipped with Chinese LCD display, which can display real-time operating status of the circuit breaker, such as current current, voltage, active power, residual current, switch opening/closing state, protection setting parameters, protection, alarm, trip event and other functions. |
| Button | Set parameters, query and display data |
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