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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | Macromatic |
| Manufacturer Product Number | SFFAD7A250 |
| Description | Seal Monitor; Resistance Probe; 24V AC/DC; 1K...250K ohms; SPDT; Flange Mount |
| Datasheet | Download Datasheet |
The Macromatic SFFAD7A250 is a seal monitor with SPDT output and rated 10 A at 240 V AC, 7 A at 28 V DC, driven by a 24V AC/DC input.
It watches for submersible pump shaft seal leakage.
It senses through a resistance-sensing probe.
It picks up after 1 s.
It has Flange Mounting and Plug In terminals.
| Category | |
| Manufacturer | Macromatic |
| Monitoring Function | Submersible pump shaft seal leakage |
| Sensor Type | Resistance-sensing probe |
| Number of Channels | Single Channel |
| Sensitivity Range | 1K...250K ohms |
| Probe Voltage | 5 V DC pulsed |
| Input Voltage | 24V AC/DC |
| Input Operating Range | +10%/-15% of nominal at 50/60 Hz |
| Pickup Delay | 1 s |
| Reset Delay | 1 s |
| Reset Method | Automatic |
| Status Indicator | Green when input voltage is applied, red when a seal leak is detected and the relay is energized |
| Contact Configuration | SPDT |
| Output Rating | 10 A at 240 V AC, 7 A at 28 V DC |
| Mounting Type | Flange Mount |
| Termination Style | Plug In |
| Rated Power | 3 VA |
| Operating Temperature (Storage) | -28...+65 °C (-40...+85 °C) |
| Mechanical Life | 10,000,000 (100,000) |
| Approvals | UL Recognized (E109466) |