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The Macromatic SFP240A250 is a pump seal failure relay. This 8 Pin plug-in relay has an input voltage of 240V. It is a single channel relay designed to check for leaks in submersible pump seals and has an output of 10A SPDT. The sensitivity is adjustable from 1K to 250K Ohms using the low profile adjustment knob. Single channel indicates that the relay detects leaks for one pump. The SFP240A250 has an LED indicator that is red when the unit senses a leak. It stays green as long as there is no leak. It uses an 8 pin 70169-D octal socket.
Note: Image is an approximation, actual part may differ
Specifications
- Relay Function- Pump Seal Failure, Single Channel
- Input Voltage- 240V AC
- Output- 10A SPDT
- Sensitivity Range- 1K to 250K Ohm
- Voltage Tolerance- +10/-15% of nominal
- Load- 3VA
- Probe Voltage- 5V DC Pulsed
- Operating Temperature- -28 C to 65 C (-18 F to 149 F)
- Storage Temperature- -40 C to 85 C (-40 F to 185 F)
- Output Contacts- 10A @ 240V AC / 7A @ 28V DC, 1/4 HP @ 120V AC (N.O.)
- Life- Mechanical: 10,000,000 Operations, Full Load: 100,000 Operations
- Response Time- Pick up: 1 sec, Drop out: 1 sec
- Dimensions- 2.4" Height x 1.7" Width x 3" Depth
- Approvals- UL and CUL Recognized, CE, UL & CUL Listed (with Socket)
The resistance is measured by a probe inserted in the pump seal cavity. In the event of a leak, resistance between the probe and the connection is lowered by contaminating fluid that goes into the seal cavity. The relay energizes when the resistance goes below the preset sensitivity point.
Macromatic SFP Series Relay Installation Instructions
SFP240A250 1K - 250K Ohms Pump Seal Failure Relay
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