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| Model | YZM5EY-250 | YZM5EY-400 | YZM5EY-630 | |
| Pole Number | 3P/4P | |||
| Rated Voltage Ue(V) | AC400V(customizable) | |||
| Rated Current (A) | 100, 125, 140, 150, 160, 180, 200, 225, 250, OFF (adjustable in steps) | 200, 225, 250, 280, 300, 320, 350, 375, 400, OFF (adjustable in steps) | 400, 440, 460, 480, 500, 530, 560, 600, 630, OFF (adjustable in steps) | |
| Rated Insulation Voltage Ui(V) | 1000V | |||
| Rated Impulse Withstand Voltage Uimp (kV) | 8 | |||
| Rated Operating Frequency f(Hz) | 50 | |||
| Rated Ultimate Short-Circuit Breaking Capacity | 50/65KA | 50/70KA | 50/70KA | |
| Rated Service Short-Circuit Breaking Capacity | 35/65KA | 50/70KA | 50/70KA | |
| Rated Short-Time Withstand Current Icw | 10000A/1S | |||
| Electrified Operations (times) | 1000 | 1000 | 1000 | |
| Unelectrified Operations (times) | 7000 | 7000 | 4000 | |
| Protection | Overload Long-Time Protection | YZM5EY-250:Overload long-time trip setting current Ir: 100-250A (stepless adjustable, step 1A), accuracy ±10%;Time setting: 3-18S (I2t = 6(Ir)2tR), accuracy ±10%;
YZM5EY-400:Overload long-time trip setting current Ir: 160-400A (continuously adjustable), accuracy ±10%;Time setting: 3-18S (I2t = 6(Ir)2tR), accuracy ±10%; YZM5EY-630:Overload long-time trip setting current Ir: 252-630A (adjustable), accuracy ±10%;Time setting: 3-18S (I2t = 6(Ir)2tR), accuracy ±10%; |
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| Short-Circuit Short-Time Protection | Short-circuit short-time trip setting current Isd: 2-10 times Ir + OFF, accuracy ±20%;Time setting: 0.1-1.0S, accuracy ±20%; | |||
| Short-Circuit Instantaneous Protection | Short-circuit instantaneous trip setting current Ii: 2-12 times Ir + OFF, accuracy ±20%;Time setting: ≤0.2S, accuracy ±20%; | |||
| Overvoltage Protection | Overvoltage threshold Uvo setting range: 253V~286V, step 1V, operating characteristic: ≥1.0Uvo, delayed action;Operating delay setting range: 1-10S, step 1S, delay characteristic: definite time; | |||
| Undervoltage Protection | Undervoltage threshold Uvu setting range: 253V~286V, step 1V, operating characteristic: ≤1.0Uvu, delayed action;Operating delay setting range: 1-10S, step 1S, delay characteristic: definite time; | |||
| Phase Failure Protection | Phase failure protection function: When any phase (A, B, C) is missing on the power supply side of the switch, the circuit breaker trips for protection, and the operating time is ≤1s. | |||
| Remote Control | RemoteOpening | Remote opening can be commanded | ||
| Remote Closing | Remote closing cannot be commanded | |||
| Pre-Alarm | Overload Pre-Alarm | Overload pre-alarm default: 1.0Ir | ||
| Overload Pre-Alarm Characteristic | Alarm starts when I≥1.13Ir; Alarm stops when I＜1.05Ir. | |||
| Measurement | Three-Phase Current | Sampling deviation ≤±2% above 0.2-1.2In; Sampling deviation ±5A below 100A. | ||
| Three-Phase Voltage | Sampling deviation ≤±2% within 0.7-1.3Un | |||
| Communication | Communication Method | RS485 | ||
| Communication Protocol | Communication Protocol for Low-Voltage Molded Case Circuit Breakers | |||
| Communication Rate | Optional: 600bps, 1200bps, 2400bps, 4800bps, 9600bps, 19200bps; Default: 9600bps | |||
| Additional Functions | Display and monitor the voltage and current of the line operation | Function of displaying and monitoring line operating current and voltage. Equipped with LCD display, which can show real-time operating status of the circuit breaker, such as current, voltage, active power, residual current, switch opening/closing status, protection setting parameters, protection, alarm, trip events, etc. | ||
| Buttons | Setting parameters, querying and displaying data | |||
| Model & Dimensions (mm) | YZM5EY-250 | YZM5EY-400 | YZM5EY-630 | YZM5EY-800/1250 | ||||
| 3P | 4P | 3P | 4P | 3P | 4P | 3P | 4P | |
| L | 165 | 257 | 257 | 275.5 | ||||
| L1 | 102 | 150 | 150 | 150 | ||||
| L2 | 59 | 99 | 99 | 102 | ||||
| L3 | 51 | 91 | 91 | 91 | ||||
| W | 105 | 140 | 140 | 184 | 210 | 280 | 210 | 280 |
| W1 | 24 | 52 | 52 | 59 | ||||
| A | 35 | 43.5 | 43.5 | 70 | ||||
| B | 144 | 230 | 230 | 243.5 | ||||
| C | 24 | 31 | 31 | 45 | ||||
| D | 21 | 29 | 29 | 30 | ||||
| E | 22.5 | 30 | 32 | 26 | 28 | |||
| E1 | 22.5 | 29 | 31 | 26 | 28 | |||
| H | 80.5 | 97 | 97 | 97 | ||||
| H1 | 87.5 | 103 | 103 | 103 | ||||
| H2 | 93 | 109 | 109 | 109 | ||||
| F | 116 | 155 | 155 | 155 | ||||
| a | 126 | 194 | 194 | 243 | ||||
| b | 35 | 44 | 44 | 70 | ||||
| φd | 4 × Φ4.5 | 4 × Φ7 | 4 × Φ7 | 4 × Φ8 | ||||
| No. | Product Model | Terminal Width b(mm) | Terminal Inner Hole d(mm) | Terminal Hole Spacing a(mm) | Thickness c(mm) |
| 1 | YZM5EY-250 | 20 | Φ9 | – | 5.0 |
| 2 | YZM5EY-400 | 28 | Φ11 | – | 6.0 |
| 3 | YZM5EY-630 | 40 | Φ13 | 12 | 8.0 |
| 4 | YZM5EY-800 | 40 | Φ13 | 12 | 10.0 |
| 5 | YZM5EY-1250 | 44 | Φ11 | 12 | 20.0 |
