Thermal overload relay

Sieno GTH-85 thermal overload relay

GTH series thermal relay is used in the circuit of 50/60Hz, rated insulation voltage 660V,rated current 0.1-85A for protecting the phase break when the electric motor is overloaded. Therelay has diffe
Product description: Sieno GTH-85 thermal overload relay
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Sieno GTH-85 thermal overload relay

GTH series thermal relay is used in the circuit of 50/60Hz, rated insulation voltage 660V,rated current 0.1-85A for protecting the phase break when the electric motor is overloaded. Therelay has different mechanism and temperature compensation. It can be plugged in CJX5 seriesAC contactor. The product conforms to IEC60947-4-1.

Technical Data:

Motion Characteristic: Three-phase Balance Motion Tim

No	Times of the setting current(A)	Motion time			Start conidition	Ambient temperature
1	1.05	>2h			Cold state	20±5^oC
2	1.2	<2h			Heat state (Following the No.1 test)
3	1.5	<4min			Heat state (Following the No.1 test)
4	7.2	10A	2s< Tp ≤10s	≤63A	Cold state
4	7.2	10	4s< Tp ≤10s	>63A	Cold state

No	Times the setting current(A)		Motion time	Start condition	Ambient temperature
No	Any two phases	Another phase	Motion time	Start condition	Ambient temperature
1	1.0	0.9	>2h	Cold state	20±5^oC
2	1.15	0	<2h	Heat state(Following the No.1 test)	20±5^oC

Phase-losing Motion Characteristic

Ratings	Type	GTH-22			GTH-40			GTH-85
	Nominal current	Ranges			Ranges			Ranges
	Nominal current	Min.	Mid.	Max.	Min.	Mid.	Max.	Min.	Mid.	Max.
Rated current(A)	0.14	0.1	0.14	0.16
	0.21	0.16	0.21	0.25
	0.33	0.25	0.33	0.4
	0.52	0.4	0.52	0.63
	0.82	0.63	0.82	1
	1.3	1	1.3	1.6
	2.1	1.6	2.1	2.5
	3.3	2.5	3.3	4
	5	4	5	6	4	5	6
	6.5	5	6.5	8	5	6.5	8
	7.5	6	7.5	9	6	7.5	9
	8.5	7	8.5	10	7	8.5	10	7	8.5	10
	11	9	11	13	9	11	13	9	11	13
	15	12	15	18	12	15	18	12	15	18
	19	16	19	22	16	19	22	16	19	22
	22				18	22	26	18	22	26
	30				24	30	36	24	30	36
	34				28	34	40	28	34	40
	42							34	42	50
	55							45	55	65
	65							54	65	75
	74							63	74	85
Element No.	2 heaters	Standard			Standard			Standard
Element No.	3 heaters	Option			Option			Option
Aux. Contact		1NO 1NC			1NO 1NC			1NO 1NC
Reset type		Auto/Manual			Auto/ Manual			Auto/Manual
Power consumption		1.8VA/heater			1.8VA/heater			1.8VA/heater
Separate mounting unit		AZ-22H			AZ-40H			AZ-85H
Other model		GTH-22/3			GTH-40/3			GTH-85/3
		GTH-22			GTH-40			GTH-85
		GTH-22/L			GTH-40/L			GTH-85/L
Applied contactors		GMC-9,12,18,22			GMC-32,40			GMC-50,65,75