| Monitoring Application | Frequency |
| Voltage Sensing Range | 15 → 280 V ac, 30 → 550V ac |
| Contact Configuration | DPDT |
| Mounting Type | DIN Rail |
| Time Delay | 0 → 100 s, 0 → 50s |
| Frequency Sensing Range | 5 → 600Hz |
| Series | MK9837N |
| Height | 90mm |
| Operating Temperature Range | +60°C |
| Terminal Type | Screw |
| Minimum Operating Temperature | -20°C |
| Width | 22.5mm |
| Dimensions | 97 x 22.5 x 90mm |
| Length | 97mm |
| Maximum Operating Temperature | +60°C |
| Minimum Frequency Sensed | 5Hz |
| Minimum Voltage Sensed | 15 V ac, 30V ac |
| Maximum Voltage Sensed | 280 V ac, 550V ac |
| Maximum Frequency Sensed | 500Hz |
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