| Model | DS-ML51N | |
| Holding force when locked | 500 N | |
| Holding force when lock release*1 | Approx. 20 N | |
| Working distance | Sao(OFF→ON) | 0.1 mm |
| Sar(OFF→ON) | 15 mm | |
| Response time | Lock → Lock release | 30 ms |
| Lock release → Lock | Less than 300 ms | |
| Control output (OSSD output) | Output method | Transistor output × 2 |
| Maximum load current | 150 mA | |
| Residual voltage (when ON) | 1.0 V | |
| Voltage when OFF | 0.9 V | |
| AUX output (non-safety system output) | Output method | Transistor output |
| Maximum load current | 350 mA | |
| Residual voltage (when ON) | ≤ 2 V | |
| External input (short-circuit current) | Safety input | Approx. 1.8 mA × 2 |
| Lock control input | Approx. 1.8 mA | |
| AUX input | Approx. 2 mA | |
| Power supply | Power voltage | 24 VDC ±20 % |
| Power consumption | 3.6 W | |
| Protection circuit | Reverse connection and short connection protection | |
| Environmental resistance | Enclosure rating | IP67 |
| Operating ambient temperature | -20 to +55 °C (no freezing) | |
| Storage ambient temperature | -25 to +70 °C (no freezing)*² | |
| Operating ambient humidity | 5 to 95 % RH | |
| Storage environment humidity | 5 to 95 % RH | |
| Vibration resistance | 10 to 55 Hz, Double amplitude 2.0 mm, 5 minutes in each of the X, Y, and Z directions (IEC 60947-5-3) | |
| Shock resistance | 30 G, 6 times in each of the X, Y and Z directions (IEC 60947-5-3) | |
| Applicable standards (safety) | EN61508, IEC61508 (SIL3), EN ISO13849-1:2015 (PL e, Category 4) | |
| ENISO14119 (Type4), IEC60947-5-3, EN60947-5-3 | ||
| Material | Door switch | PBT, PET/PAR, TPC, PC, tempered film |
| Matcher | PBT, SUS304, steel nickel-plated | |
| Mounting bracket | Aluminum, painted steel (screws: steel) | |
| Weight | Door switch | Approx. 240 g |
| Matcher | Approx. 130 g | |
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