Electrical Bimetal Button Contacts

Electrical Bimetal Button Contacts takes advantage of the difference in the coefficient of thermal expansion of the bimetal to achieve automatic adjustment. It maintains stable electrical contact in temperature changing environments, and is widely used in temperature control switches, thermal protectors and other equipment.

General Description

Bimetal contact buttons can be supplied in a large varitey of configurations and combinations of materials, The material of the working layer may be Ag,AgCdO or AgNi,Forthe side to be welded to the support material steel or Cu-Ni alloy can be used,The thickness of top working layer is within half of the top layer thickness .In the standard design the contactbuttons have 3,5or7 spherical projections,Other numbers of projections and shapes of the projections,however,are also possible

Standard Dimensios

Shank Diameter (d)	Head Diameter (D)										ShankLength (L)
	2.5	3	3.5	4	4.5	5	5.5	6	7	8
Φ1.2											0.6~1.5
Φ1.5											0.8~2.0
Φ1.65											0.8~2.0
Φ1.8											1.0~2.5
Φ2.0											1.0~2.5
Φ2.35											1.5~3.5
Φ2.5											1.5~3.5
Φ3.0											1.5~5.0
Φ3.5											2.0~5.0
Φ4.0											2.0~5.0

Material Characteristics

Head Diameter	Head Thickness	Shank Length	Shank Diameter	Silver Layer Thickness		Angle	Spherical Radius
±0.10	±0.05	±0.15 0	-0.12	S≤0.4：	0.04	±0.2°	±0.2R
					0
				S＞0.4：	0
					-0.04

Customised Presentation of Results

From off-standard sizes and shaped structures to special performance requirements, customers around the globe offer deeply customised metal stampings and electrical connection components.

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