Temperature Fuse-Dong Guan KingLion Electronics Co.,Ltd_

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Temperature Fuse

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Product details

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Warranty(Year)：1 Year

Product Specifications

Product Description

Upper Limit Temperature Protection

HOOYU? thermal link offer an accurate, reliable solution to the need for upper limit temperature protection. Known as a thermal link, HOOYU? thermal link provides protection against overheating by interrupting an electrical circuit when operating temperatures exceed the rated temperature of the thermal link.

HOOYU? thermal link Features:

? One-shot operation cuts off electrical power

? Current interrupt capacity up to 16 amps @ 250VAC

? Low resistance

? Compact size

H4ASeries

Rated for continuous operating current up to 10 amps @ 250VAC.

The H4ASeries is applied to millions of appliances and personal care products each year, providing

reliable back-up protection for temperature controlling thermostats and other over-temperature

conditions. The H4A series is also widely applied in office machines, portable heaters and industrial

equipment as a thermal safeguard.

H4BSeries

Designed for higher current applications than the H4A, HOOYU? thermal link is rated for operating currents up to 16 amps @ 250VAC.

Principles of Structure and Work

1. Before functions

Movable electrode, spring and thermal and sensitive material are installed in the metal tube of H4A series temperature over-heated fuse. Spring B is encased in a condensed situation. Its elasticity in the light of round plate to support the electrode can make it contact lead wire A. In the usual situation, the current in lead wire A can conduct to lead wire B through lead wire A, movable electrode, metal tube and lead wire B.

2. Functioning

When the ambient temperature exceeds the functioning temperature, the quantity of heat will melt the thermal and sensitive granule into liquid. At that time, Spring A and spring B will elongate. The elasticity of spring A will push moveable electrode to spring B to interrupt the contact with lead wire A and cut off the circuit. After a thermal link opens a circuit, the thermal link needs to be replaced. This replacement procedure must include correction of the fault condition before the product is operated again.

Dimension - millimetre (inch)		H4A/H4B Series	Tolerance
Standard lead wire	A. Total length	63.7(2.51)	±2.0(0.08)
	B. Lead length of epoxy resin	14(0.55)	Reference value
	D. Lead of case	35(1.38)	±1.0(0.04)
Long lead type	A. Total length	82.7(3.26)	±2.0(0.08)
	B. Lead length of epoxy resin	33（1.3）	Reference value
	D. Lead of case	35(1.38)	±1.0(0.04)
Lead material and diametere	G. Diameter of case's lead wire	1.0(0.040)
	G. Material of case's lead wire	Tin plated red copper wire
	E. Diameter of epoxy resin's lead	1.0(0.040)
	E. Material of epoxy resin's lead	Silver plated red copper wire
Dimension of case	C. Length of case	14.7(0.58)	Reference value
Dimension of case	F. Diameter of case	4.0(0.158)	Reference value

Type	Tf ℃	Th ℃	Tm ℃	Rate voltage Ur (V)	Rated current Ir (A)	Agency
Type	Tf ℃	Th ℃	Tm ℃	Rate voltage Ur (V)	resistive Inductive	CCC	VDE	UL
H4A**072C H4A072	72	57	100	250VAC	10A	●	●	●
H4A**077C H4A077	77	62	125			●	□	●
H4A**084C H4A084	84	69	125			●	●	□
H4A093C H4A093	93	78	140			●	□	●
H4A**098C H4A098	98	83	140			●	●	●
H4A**104C H4A104	104	89	150			●	●	□
H4**A110C H4A110	110	95	150			●	●	●
H4A**117C H4A117	117	102	150			●	●	●
H4A**121C H4A121	121	106	160			●	●	●
H4A**128C H4A128	128	113	160			●	●	●
H4A**133C	133	118	160			●	□	□
H4A**142C H4A144	142	127	175			●	□	□
H4A**144C H4A144	144	129	175			●	●	●
H4A**152C H4A152	152	137	175			●	●	□
H4A**158C	158	143	240			●	□	□
H4A**167C H4A167	167	152	187			●	●	□
H4A**172C H4A167	172	157	240			●	□	□
H4A**184C H4A184	184	169	210			●	●	□
H4A**190C	190	175	275			●	□	□
H4A**192C H4A192	192	177	210			●	●	□
H4A**216C H4A216	216	201	275			●	●	□
H4A**229C H4A229	229	210	300			●	●	□
H4A**240C H4A240	240	210	300			●	●	□