TH-T25KP Thermal Overload Relay

Why Choose SPX TH-T25KP Thermal Overload Relay?

In complex industrial sites, the operating conditions of motors vary greatly, and factors such as rated current, starting load, and ambient temperature require protective devices to have high adaptability and adjustability. The SPX cuatomized TH-T25KP Thermal Overload Relay is not a fixed specification component, but a configurable motor protection platform. The core design concept is to enable engineers to "tailor" protection parameters based on the actual working conditions of each motor through wide continuous current tuning, excellent temperature compensation, and reinforced mechanical structure, achieving protection upgrades from "applicable" to "optimal", especially suitable for challenging situations such as heavy load starting, intermittent operation, or changing environments

The TH-T25KP Thermal Overload Relay in stock provides a wide range of continuously adjustable currents that far exceed fixed models (such as covering a complete range of more than ten amperes to hundreds of amperes). Users can set the action current to the rated current value of the motor continuously and accurately by rotating the knob, achieving the best personalized matching of protection characteristics.

Usually equipped with optional or switchable functions of Class 10 and Class 20 (or higher), users can flexibly choose the matching trip curve according to whether the motor is standard start or heavy load start, which can avoid starting impact and tripping, and ensure quick protection in case of locked rotor overload.

Equipped with advanced environmental temperature compensation mechanism, the TH-T25KP Thermal Overload Relay maintains stable protection characteristics within an environmental temperature range of -20 ° C to+60 ° C (or wider), avoiding the "seasonal disease" caused by premature or delayed protection of ordinary relays due to changes in environmental temperature.

It adopts an independent base installation and is connected to the contactor through standard wiring terminals instead of direct plugging. This design provides higher wiring flexibility, stronger heat dissipation capability, and the advantage of easy individual maintenance and replacement, making it the preferred choice for high demand cabinet designs.

In addition to the standard normally closed (NC-97/98) trip contacts, an additional set of independent normally open (NO-95/96) and normally closed (NC-97/98) signal contacts are usually provided, which can be used to control circuit trip and remote alarm indication, meeting complex control and monitoring requirements.

Frame(A)	STH-T18(TH-T18)				STH-T25(TH-T25)				STH-T50(TH-T50)
Suitabie AC contactor	S-M10/12				S-M20/25				S-M35/50
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		29	24~34
	0.35A		0.28~0.42		1.7A		1.4~2.0		35	30~40
	0.5A		0.4~0.6		2.1A		1.7~2.5		42	34~50
	0.7A		0.55~0.85		2.5A		2~3
	0.9A		0.7~1.1		3.6A		2.8~4.4
	1.3A		1~1.6		5A		4~6
	1.7A		1.4~2.0		6.6A		5.2~8
	2.1A		1.7~2.5		9A		7~11
	2.5A		2~3		11A		9~13
	3.6A		2.8~4.4		15A		12~18
	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-T25				63	51	81	4.5