Products




Silver Contact Brazing with Copper Plate and Brass Bolt

Silver Contact Brazing with Copper Plate and Brass Bolt

1-Products Name: Brass Bolt Brazed Silver Contact for Power Switch

2-Base Material: 

(1)CNC H65 Brass Bolt (Screw) or Stamping T2Y2 Copper Terminal

(2)Silver Contact: Ag,AgNi,AgSnO2,AgSnO2ln2O3,AgCdO,AgZnO,etc

3-Surface Treatments:No plated or as require Silver-plated,Gold-plated,Nickel-plated.

4-Free Samples:1-10pcs is allowed

5-Lead Time:Orders 7-10days,Samples 20-25days(including the tooling/die production of Stainless Steel Stamped Part);

6-Packing: Plastic inside and carton/pallet outside

7-Certifications: ISO9001,IATF16949,RoHS,REACH,etc.

8-Production Capacity: 50,000,000 pcs/month

9-Applications:Rotary Automotive Power Switch,etc


What is the function of the main power switch of the car ?

1. The car power switch which made of Brass Bolt Brazed Silver Contact is to control the electrical output of the battery, generally under the steering wheel, there is only one.

2. Typical car battery voltage ranges from 9V to 16V. When the engine is off, the nominal voltage of the car battery is 12V; when the engine is running, the battery voltage may reach ±100V in transient voltages. Therefore, safety should be paid attention to during maintenance.

Brass Bolt Brazing for Rotary Automotive Power Switch.png
Contact Copper Brazed for Truck Power Switch.png
Silver Contact Welded for Truck Power Switch.png

Silver Contacts Brazing Assembly for Main Switch of Automobile Power Supply.png

What is the difference between a car starter relay and a solenoid master switch?

The principle of starting relay which made of Contact Copper Brazed and electromagnetic main switch is the same. The Silver Contact Brazing starter relay is used more frequently, mainly to control the magnetic switch of the starter. The volume is smaller than the Automobile main power switch. The Silver Contact Welded electromagnetic main switch is used relatively less times, the volume is relatively large, and the rated operating current is relatively large. Whether it is a car, a large truck, or an engineering vehicle, the Silver Contact Welding starting relay is one of the necessary relays. Most of the battery main switch are only used on large trucks and engineering vehicles, and the application of small cars is relatively small.


There are many types of Welded Contacts starter relays, and the appearance is also different. But the internal principle is the same, different types of relays have different currents, and the power of the starter is relatively large, so the working current of the Contact Welding starting relay should be selected larger. The working principle is the same as that of ordinary relays, and so is the principle of Electrical Contact Welding main switch. Both relays are normally open. After the relay coil is energized, a magnetic field is generated, and the magnetic field firmly attracts the armature. The Moving Silver Contact on the armature contacts the Static Silver Contact at the other end, and the circuit is turned on. After the coil is powered off, the magnetic field disappears, and the armature disconnects the two Silver Contacts under the action of the spring, and the circuit is in the disconnected state at this time.


The Contacts Metals Welding switching power supply of the car is mainly used to replace the switch power of the manual power supply. Many models such as trucks, agricultural vehicles, engineering vehicles, etc. are equipped with a Brazing Electrical Contacts mechanical main power switch, also called a "gate", the purpose is to disconnect the main circuit and prevent the battery from losing power. However, manual use is more troublesome, far less convenient than electric switches, with long life and low mechanical failure.


It can be seen that the structure is slightly different from that of the Electrical Contact Resistance Brazing starter relay, and it is somewhat detailed with the magnetic switch of the starter. This Resistance welding Contacts switch has a large operating current and strong magnetic force. It uses pure silver contacts, which has higher reliability and longer life. At the same time, the cost is high and the price is also high. The armature has a Moving Silver Contact, which is similar to the principle of an AC contactor. The coil is energized to generate magnetic force, which sucks the armature down and sucks it in, so the Moving Electric Contact connects the two Static Electrical Contacts.The battery positive line is directly disconnected in the circuit, and almost all the current of the car flows through the Welded Electrical Contact electromagnetic switch. When the key is turned on, the control coil on the main power switch is energized, the electromagnetic switch is closed and the internal contacts are connected, and the vehicle resumes power supply.

Electrical Silver Contact Welding Assembly Set.png

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Contact Information:

Mr.Terry Young (Sales Manager&Technology Engineer)

Apollo Electronic Components (Xiamen) Co.,Ltd 

Xiamen Apollo Stamping Welding Technology Co., Ltd


Add:225#,Jinshang Road,Huli District,Xiamen City,Fujian Province,China,361009

Tel&Fax: 0592-5765084, Mob/WhatsApp/WeChat: 0086-13859903038 ,QQ: 1260358661

Email: yfd@china-electronic-components.com

Web: www.china-electronic-components.com  , www.stamping-welding.com


Since 1990,professional in Silver Contact&Contact Riveted Set&Contact Brazed Set&Screw Terminal Set&Metal Stamping for Relay&Switch&Contactor&Breaker&EV PV Fuse,ect!