Thermal Relay｜Magnetic Contactor / Starter｜Products

TJ-18N

TJ-50

Thermal Relay

Ideal for detecting overloads and phase loss to protect motors and compressors from burnout.

Features

A wide variety of types are available, including standard (2-element and 3-element) types, phase-loss protection types, quick-action types, and time-delay types.
Prevents damage to all kinds of motors caused by overload or locking.
Incorporates an ambient temperature compensation function to automatically correct the operating current even when the ambient temperature varies within the range −20 °C to +60 °C.
Output contacts are independent 1NO and 1NC contacts.
Manual or automatic reset can be selected by pressing and turning the reset button through 90 degrees.
Models TJ-18N, TJ-35 to TJ-125, and TJ-400N can be used as stand-alone types.

Specifications

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Model number	standard model^※1	TJ-18JA	TJ-18	TJ-18N	TJ-35	TJ-50	TJ-125	TJ-220^※2	TJ-400N^※2	T-400^※3	T-600^※3
	phase-failure protection model^※1	GTJ-18JA	GTJ-18	GTJ-18N	GTJ-35	GTJ-50	GTJ-125	GTJ-220^※2	GTJ-400N^※2	GT-400^※3	GT-600^※3
	3-heaters protection model	TJ-18JA-3	TJ-18-3	TJ-18N-3	TJ-35-3	TJ-50-3	TJ-125-3	TJ-220-3^※2	TJ-400N-3^※2	-^※4	-^※4
Combinetion of magnetic contactors		PAK-6JC^※5	PAK-11J PAK-12J PAK-20J PAK-21J	individual use	PAK-26J PAK-35J PAK-50J	PAK-50H PAK-65H PAK-80H PAK-95H	PAK-100H PAK-125H PAK-150H	PAK-220H	individual use	PAK-300J PAK-400J	PAK-600J
Poles		3		3	3	3	3	3	3	3	3
Heater elements	standard model	2		2	2	2	2	2	2	2	2
	phase-failure protection model	3		3	3	3	3	3	3	3	3
	3-heaters protection model	3		3	3	3	3	3	3	3	3
Individual use		-		Possible	Possible	Possible	Possible	-	Possible	-	-
Rated current (A)^※6	Standard model Phase-failure protection model 3-point set current scale	0.2-0.25-0.3 0.24-0.3-0.36 0.28-0.35-0.42 0.4-0.5-0.6 0.56-0.7-0.84 0.64-0.8-0.96 0.8-1-1.2 1-1.2-1.4 1.2-1.4-1.6 1.4-1.8-2.2 1.8-2.3-2.8 2.4-3-3.6 2.9-3.6-4.3 3.7-4.6-5.5 4-5-6 5.4-6.7-8 6-7.5-9 7.4-9.2-11 8.8-11-13 11-13-15 12-15-18 15-18-20 18-22-26 22-26			0.2-0.25-0.3 0.24-0.3-0.36 0.28-0.35-0.42 0.4-0.5-0.6 0.56-0.7-0.84 0.64-0.8-0.96 0.8-1-1.2 1-1.2-1.4 1.2-1.4-1.6 1.4-1.8-2.2 1.8-2.3-2.8 2.4-3-3.6 2.9-3.6-4.3 3.7-4.6-5.5 4-5-6 5.4-6.7-8 6-7.5-9 7.4-9.2-11 8.8-11-13 11-13-15 12-15-18 15-18-20 18-22-26 21-26-31 24-30-36 28-34-42 34-42-48 40-48-52 46-56-65	12-15-18 18-22-26 21-26-31 24-30-36 28-34-42 34-42-48 40-48-58 46-56-64 56-68-80 68-80-94 76-90-100	34-42-48 40-48-58 46-56-64 56-68-80 68-80-94 76-90-100 85-105-125 110-130-150 130-160-190 170-200-230	65-80-95 85-105-125 105-130-150 130-160-190 150-190-230 185-230-275 215-270-325 265-330-400	150-190-230 185-230-275 215-270-325 265-330-400 310-390-470 400-500-600	^※8 110-140-180 170-240-290 280-380-440	^※8 110-140-180 170-240-290 280-380-440 400-500-600
										^※8 110-140-170 140-180-220 200-240-280 240-300-360 300-380-450	^※8 110-140-170 140-180-220 200-240-280 240-300-360 300-380-450 400-500-600
	Fast-trip model^※7 1-point set current fixed	2.8～26			4～65	20～100	60～150	－	－	－	－

※1 Standard and phase-failure protection models are also available in slow-trip models.
※2 TJ-220 and TJ-400N are a set of TJ-35C and CT.
※3 T-400 and 600 are a set of T-21C and CT.
※4 However 3-heaters protection models for T-400 and T-600 are not manufactured.
※5 For PAK-6JC, the accessories for connection are not necessary.
※6 The rated current of thermal overload relays for magnetic contactor must be selected within the rated operational current of magnetic contactors.
※7 Phase-failure protection models can produce more than 8 A.
※8 For T-400 to T-600, upper column indicates for 2-heaters(standard) models and lower for phase-failure protection models