| In accordance with | IEC - 61643 - 1 | | | | |
| Max. continuous operating voltage (AC/DC) | 150/200V | 275/350V | 320/420V | 385/500V | 440/580V |
| Nominal discharge current (8/20) | 20kA | | 20kA | | |
| Max. discharge current (8/20) | 50kA | | 50kA | | |
| Impulse current 10/350) | 12.5kA | | 12.5kA | | |
| Specific energy | 39kJ/W | | 39kJ/W | | |
| Charge | 6.25As | | 6.25As | | |
| Protection level | <0.8kV | <1.5kV | <1.6kV | <1.7kV | <2.0kV |
| Residual voltage at limp | <0.7kV | <1.2kV | <1.3kV | <1.4kV | <1.9kV |
| Follow current | NO | | NO | | |
| Response time | <25ns | | <25ns | | |
| Residual current at Uc | <2.5mA | | <2.5mA | | |
| Thermal protection | YES | | YES | | |
| Terminal screw torque | Max. 3.5Nm | | Max. 3.5Nm | | |
| Back-up fuse (if mains > 250A) | 160A gL | | 160A gL | | |
| Short-circuit withstand current | 25kA / 50Hz | | 25kA / 50Hz | | |
| Temperature range | - 40˚C....+80˚C | | - 40 0 C....+80 0 C | | |
| Terminal cross section | 35mm² (solid) / 25mm² (stranded) | | 35mm2 (solid) / 25mm2 (stranded) | | |
| Mounting EN 60715 | 35mm² top-hat rail | | 35mm2 top-hat rail | | |
| Degree of protection | IN20 | | IP20 | | |
| Housing material | Thermoplastic; extinguishing degree UL 94 V-O | | Thermoplastic; extinguishing degree UL 94 V-O | | |
| Dimensions DIN 43880 | 1TE | | 1TE | | |
| eight per unit | 124g | 150g | 150g | 143g | 146g |
| MER 25 (with remote contacts) | | | | | |
| Remote contacts | YES | YES | YES | YES | YES |
| Contact ratings | AC: 250V/0.5A ; 125V/3A | AC: 250V/0.5A ; 125V/3A | AC: 250V/0.5A ; 125V/3A | AC: 250V/0.5A ; 125V/3A | AC: 250V/0.5A ; 125V/3A |
| Terminal cross section | max. 1.5mm² | max. 1.5ML7 | max. 1.5mm7 | max. 1.5MN7 | max. 1.5MO7 |
| Remote terminal torque | 0.25Nm | 0.25Nm | 0.25Nm | 0.25Nm | 0.25Nm |
| eight per unit | 124g | 150g | 150g | 143g | 146g |
| MER 25 (with remote contacts) | | | | | |
| Remote contacts | YES | YES | YES | YES | YES |
| Contact ratings | AC: 250V/0.5A ; 125V/3A | AC: 250V/0.5A ; 125V/3A | AC: 250V/0.5A ; 125V/3A | AC: 250V/0.5A ; 125V/3A | AC: 250V/0.5A ; 125V/3A |
| Terminal cross section | max. 1.5MK13 | max. 1.5ML13 | max. 1.5mm13 | max. 1.5MN13 | max. 1.5MO13 |
| Remote terminal torque | 0.25Nm | 0.25Nm | 0.25Nm | 0.25Nm | 0.25Nm |
| eight per unit | 129g | 155g | 155g | 148g | 151g |
| Packaging dimensions (single unit) | 108 x 74 x 24mm | 108 x 74 x 24mm | 108 x 74 x 24mm | 108 x 74 x 24mm | 108 x 74 x 24mm |
