TCF Series-E

May not be exact product – for reference only.


Lead Time: 

7 Days

function configuration

Combination Single Channel Seal Leak and Over Temperature, Automatic and Manual Reset (For Ebara pumps using float-type leakage detection)

control voltage

24V AC



sensitivity range


relay type

Seal Leakage and Over Temperature


Flange for Door Mounting


Description of Function

Two wires from the Over Temp/Seal Leakage relay are connected to a N.C. thermal switch in the windings of the pump motor to monitor for overheating. A low-voltage DC signal is applied to check the status of the thermal switch. Two additional wires are connected to a N.C. float switch in the Leakage Sensor. A separate low-voltage DC signal is applied to check the status of the Leakage Sensor. These products have isolated output contact relays, one for over temperature and one for seal leakage.

With input voltage applied, normal temperature condition (thermal switch closed) and no seal leakage (Leakage Sensor contact closed), both the over temperature relay and the seal leakage relay are energized. The TEMP & SEAL LEDs are both Green, indicating normal conditions and input voltage applied.

When the motor temperature rises and the N.C. thermal switch opens, the over temperature relay is de-energized, opening a contact that had been closed and turning off the pump contactor. The TEMP LED turns Red. If the over temperature condition is cleared, the unit will reset based on the setting of the Over Temp switch. In the AUTO mode, the unit will reset automatically. In the MANUAL mode, the Over Temp Reset button must be pushed to clear the alarm and reset the relay.

If the seal starts to leak, contaminating fluid enters the pump motor cavity. The contact in the Leakage Sensor will open and the seal leakage relay is de-energized, reclosing a contact that was opened and providing an alarm indication of a leaking seal. The SEAL LED turns Red

Description of Function

Product Overview


Monitors Submersible Pumps for Over Temperature & Seal Leakage Works with Pumps using Float Type Leakage Detector Auto & Manual Reset for Over Temperature Low-Profile Adjustment Switch & Reset Button Full Status Indication on Top of Unit for Easy Troubleshooting 11 Pin Back-Mounted Socket Provided with Relay

Enclosure Style:

Flange-enclosure designed for deadfront door-mounting
Configuration / Contact Rating:
7A SPDT & SPNC / 7A @ 240V AC /7 A @ 28V DC, 1/4 HP @ 120V AC (N.O.)
Application Information:
Voltage Tolerance: AC Operation: +10/-15% of nominal at 50/60 Hz. Load (Burden): 3 VA Indicator LEDs: TEMP: Green ON with input voltage applied, normal temperature condition and relay energized; Red ON when over temperature detected and relay de-energized; Red Flashing when over temperature condition has been cleared in AUTO mode. SEAL: Green ON with input voltage applied, no seal leak and relay de-energized; Red ON when seal leak detected and relay energized; Red Flashing when seal leakage condition has been cleared. Probe Voltage: 5V DC Pulsed Response Time:: Power-up/Restart Delay: 100ms Over Temp Fault (Relay De-energize) 3 sec Over Temp Fault Clears-Auto Reset (Relay Energize) 3 sec Over Temp Fault Clears-Manual Reset (Relay Energize): Hold reset switch > 500ms Seal Leakage Fault (Relay Energize) 3 seconds Seal Leakage Fault Clears (Relay De-energize) 3 seconds Output Contacts: 7A @ 240V AC / 7A @ 28V DC, 1/4HP @ 120V AC (N.O.) Life: Mechanical: 10,000,000 operations; Full Load: 100,000 operations Temperature: Operating:-28° to 65° C (-18° to 149° F) Storage:-40° to 65° C (-40° to 185° F)
UL #: E109466


7A SPDT & SPNC / 7A @ 240V AC /7 A @ 28V DC, 1/4 HP @ 120V AC (N.O.)

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