The Macromatic TCP8G250 is an over temperature & seal leak relay. This 11 Pin plug-in relay has an input voltage of 24V. It is made to monitor for leaks in submersible pump seals, as well as over temperature issues. It has an output of 7A SPDT and is made for pumps that detect leaks with resistance sensing. The LEDs on top of the relay indicate the status. It can connect in three different ways including one probe to ground, two probes to ground, or probe to probe. Uses 70170-D octal socket. Note: Image is for reference, actual part may differ

Specifications

Relay Function- Seal Leak & Over Temperature
Input Voltage- 24V AC
Output- (2) 7A SPDT
Sensitivity Range- 1K to 250K Ohm
Voltage Tolerance- +10/-15% of nominal at 50/60 Hz
Load- 3VA
Temp & Leakage Voltage- 5V DC Pulsed
Over Temperature Resistance- 5K Ohm
Response Time- Pick-up: 1 Sec, Drop-Out: 1 Sec
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- 7A @ 240V AC / 7A @ 28V DC, 1/4 HP @ 120V AC (N.O.)
Life- Mechanical: 10,000,000 Operations, Full Load: 100,000 Operations
Dimensions- 2.4" Height x 1.7" Width x 3" Depth
Approvals- UL and CUL Recognized, UL & CUL Listed (with Socket)

The relay is connected to a thermal switch in the pump motor to check for over temperature problems. The resistance sensing probe is also connected to the relay to check for seal leaks. There is one output contact for overheating and one for seal leaks, which are isolated. The over temperature point is set at 5K ohms, and the seal leak sensitivity ranges from 1K to 250K ohms. When the input voltage is introduced, and there are no errors, the over temperature relay is energized and the seal leak relay is not. The LEDs are green. If overheating occurs, the over temperature relay de-energizes and the TEMP LED is red. Once the overheating has been corrected, the relay resets automatically. In the event of a seal leak, when the resistance goes below the sensitivity point on the relay, the seal leak relay energizes & the LEAK LED is red. The sensitivity point is adjustable using the low profile knob in top of the relay.

Macromatic TCP Series Relay Installation Instructions

TCP8G250 24V 1K to 250K Ohm Over Temperature & Seal Leak Relay

	Sealcon CD17MA-GY Gray M16 Dome .20" - .39" (5 - 10 mm) O.D. Cord Grip $1.92
	Sealcon CF20MR-GY Gray M20 Flex .20" - .35" (5 - 9 mm) O.D. Cord Grip $2.72
	Macromatic CUH05A8AE Under Current Sensing Relay, 0.5-5A, 0.15-7 Sec, 24V, 2 Sec Delay $85.58
	GardTec SC92-P15/45 92mm 45 PPI Plastic Fan Filter Assembly $1.82
	Sealcon CF17DR-BK Black M16 Flex .12" - .28" (3 - 7 mm) O.D. Elongated Cord Grip $2.81
	Kacon KSC-5080ZAH Three Phase Solid State Relay w/ Heatsink, 220V AC Input, 90-480V AC Load, 80A $420.18
	Cable Tie Express 27SC6-300-100 Heavy Duty 26" Coated Stainless Steel Cable Ties, 350 lb Tensile Strength, 100 Pack $82.95
	Macromatic LCP8B100F10 24V Single Probe Liquid Level Relay, Pump Down, 4.7K to 100K, 10 Sec Delay $98.75
	AerosUSA 1732014617 DES-PDM Q 17G Cable Entry Plate, 17 Cable Entries with Internal Frame $18.75

Macromatic TCP8G250 Over Temperature & Seal Leak Relay, 24V, 1K to 250K, Automatic Reset

TCP8G250 24V 1K to 250K Ohm Over Temperature & Seal Leak Relay