Thermal Relay

Established in 2005, Zhejiang SPX Electric Appliance Co., Ltd. stands out as a trustworthy manufacturer and supplier of thermal relays in China. With years of specialization in this field, we offer products with a competitive pricing edge, catering to a wide market that spans Southeast Asia, the Middle East, and America. We eagerly anticipate the opportunity to build a lasting partnership with you in China.

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Product Description

SPX high quality STH-N series thermal relay is suitable for AC 50/60Hz, rated operating voltage to 690V, current to 630A long-term or intermittent long-term operation of the general AC motor overload and phase break protection, with phase break protection, temperature compensation, trip indication function, and can be automatically and manually reset, can be inserted with contactors. It can also be installed independently.

The STH-N12 thermal relay is suitable for S-C10/12 AC Contactor.

Frame(A)	STH-N18(TH-N18)		STH-N25(TH-N25)		STH-N50(TH-N50)
Suitabie AC contactor	S-C10/12		S-C21/25		S-C50/95
Aux contact structure	Manual or Auto retum
Adjust range selcet(A)	Select(A)	Adjust range(A)	Select(A)	Adjust range(A)	Select(A)	Adjust range(A)
	0.24A	0.2~0.32	1.3A	1~1.6	15A	12~18
	0.35A	0.28~0.42	1.7A	1.4~2.0	19A	16~22
	0.5A	0.4~0.6	2.1A	1.7~2.5	22A	18~26
	0.7A	0.55~0.85	2.5A	2~3	29A	24~34
	0.9A	0.7~1.1	3.6A	2.8~4.4	35A	30~40
	1.3A	1~1.6	5A	4~6	42A	34~50
	1.7A	1.4~2.0	6.6A	5.2~8	54A	43~65
	2.1A	1.7~2.5	9A	7~11	67A	54~80
	2.5A	2~3	11A	9~13	82A	65~93
	3.6A	2.8~4.4	15A	12~18	95A	85~105
	5A	4~6	19A	16~22
	6.6A	5.2~8	22A	18~26
	9A	7~11	29A	24~34
	11A	9~13	35A	30~40
Aux contact structure	1a1b(1NO+1NC)
Outline and installation dimension



	Type		L	W	H	φD
	TH-N20		63	51	79	4.5
	TH-N60		89	57	83.5	4.5