QJS2-LA220 220V AC 8-Pin DPDT Electromagnetic Relay – 2CO
The QJS2-LA220 Electromagnetic Relay is an 8-pin, dual changeover relay designed for electrical switching, industrial automation, and control applications.
Featuring a 220V AC coil and 2CO (Double Changeover) contact configuration, this relay allows two independent electrical circuits to be switched simultaneously using a single control signal.
Its compact design and transparent housing make it suitable for electrical control panels, automation equipment, machinery, and relay-based switching systems.
Key Features
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220V AC Coil: Designed for AC-powered control circuits.
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2CO Contact Configuration: Two independent changeover contact sets.
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DPDT Switching: Double Pole Double Throw operation.
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8-Pin Design: Provides connections for the coil and two changeover contacts.
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Electromagnetic Operation: Enables switching of separate electrical circuits.
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Transparent Housing: Allows visual inspection of internal components.
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Compact Construction: Suitable for control panels and electronic equipment.
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Versatile Applications: Ideal for automation, electrical switching, and machinery control.
Technical Specifications
| Parameter |
Specification |
| Model Number |
QJS2-LA220 |
| Product Type |
Electromagnetic Relay |
| Coil Voltage |
220V AC (nominal) |
| Contact Configuration |
DPDT / 2CO |
| Number of Poles |
2 |
| Number of Changeover Contacts |
2 |
| Number of Pins |
8 |
| Switching Mechanism |
Electromagnetic |
| Housing Type |
Transparent Plastic |
| Mounting Type |
Plug-In / Pin Terminal |
| Contact Rating |
Requires verification |
| Coil Frequency |
Requires verification |
| Compatible Socket |
Matching 8-Pin Relay Socket (verify pin arrangement) |
Pin Configuration and Operation
The relay uses an electromagnetic coil to control two independent changeover contact sets.
| Terminal |
Function |
| Coil Terminal 1 |
AC Coil Connection |
| Coil Terminal 2 |
AC Coil Connection |
| COM 1 |
Common Contact – Pole 1 |
| NO 1 |
Normally Open – Pole 1 |
| NC 1 |
Normally Closed – Pole 1 |
| COM 2 |
Common Contact – Pole 2 |
| NO 2 |
Normally Open – Pole 2 |
| NC 2 |
Normally Closed – Pole 2 |
Operating Principle
- Apply the rated AC voltage to the relay coil.
- The electromagnetic coil activates both switching poles.
- The Normally Open (NO) contacts close.
- The Normally Closed (NC) contacts open.
- When coil power is removed, both contact sets return to their normal positions.
Refer to the wiring diagram printed on the relay housing or the manufacturer's datasheet for the exact pin numbering.
Applications
- Industrial Automation Systems
- Electrical Control Panels
- Machinery Control
- Power Switching Circuits
- Lighting Control Systems
- Electrical Interlocking
- Industrial Equipment Maintenance
- Relay-Based Control Systems
- Timer-Controlled Switching
- Electrical Equipment Replacement
Important Notes
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The relay is identified as a 220V AC coil version. Confirm the exact coil rating from the product marking before installation.
- Do not connect the coil directly to a microcontroller GPIO.
- Verify the contact voltage and current ratings before connecting electrical loads.
- Use a compatible 8-pin relay socket if required.
- Confirm the terminal arrangement before wiring.
- Disconnect power before installation or maintenance.
- Mains-voltage connections must be installed by qualified personnel.
- Do not exceed the manufacturer's specified switching capacity.
Package Includes
