Description
Product Overview
The ZJWZJH 12V DC Power Relay Switch is engineered for precision and durability in demanding industrial environments. Each unit features a single‑pole double‑throw (SPDT) configuration with one normally open (NO) and one normally closed (NC) contact, allowing flexible circuit control. The relay coil operates at 12 V DC, while the contacts are rated for up to 8 A at 250 VAC or 30 VDC, making it suitable for a wide range of power applications. A transparent frosted housing provides a clear visual window, complemented by a green LED for DC operation and a red LED for AC, enabling instant status monitoring. The integrated test button lets users manually toggle the contacts, simplifying troubleshooting and verification without the need for external equipment. All components are mounted on a DIN‑rail compatible base, ensuring secure installation in standard control panels.
![[Product front view showing all components]](https://www.tunefinds.store/wp-content/uploads/2026/07/3515fcb74003484ab04f43583e836056.jpg)
Usage
Designed for versatility, this relay module excels in automation, process control, and machinery monitoring. It can be employed in PLC‑controlled conveyor systems, HVAC equipment, lighting control circuits, and motor starter applications where reliable switching is critical. The DIN‑rail mounting system streamlines panel integration, while the screw‑terminal connections provide a solid, low‑resistance path for high‑current loads. Whether you are building a custom automation solution, retrofitting an existing control panel, or prototyping a new device, the 12V DC relay offers the confidence of UL and CE certifications, guaranteeing safety and compliance across global markets.
Why Choose Us
Choosing the ZJWZJH relay means selecting a product backed by rigorous testing and quality assurance. Each relay undergoes a mechanical endurance test of ten million cycles and an electrical endurance test of one hundred thousand cycles, ensuring performance longevity even under continuous operation. The transparent housing not only protects internal components but also allows visual inspection of contact movement, reducing downtime during maintenance. Our relays are manufactured with high‑grade copper contacts and a corrosion‑resistant alloy shell, delivering superior conductivity and resistance to harsh industrial environments. Additionally, we provide comprehensive technical support and a responsive after‑sales service team ready to assist with installation, troubleshooting, and spare part inquiries.
Key Features
- SPDT configuration with one NO and one NC contact for flexible circuit design
- Built‑in LED status indicator (green for DC, red for AC) for instant visual feedback
- Integrated test button enables manual contact verification without external tools
- Robust DIN‑rail mounting and screw‑terminal connections for secure, low‑resistance installation
- Comprehensive customer support and warranty for peace of mind
FAQ
What voltage range can the relay handle?
The relay is rated for 250 VAC and 30 VDC on the contacts, making it suitable for most low‑voltage industrial applications.
Is the relay compatible with AC and DC coils?
Yes, the coil operates at 12 V DC, and the LED indicator changes color to reflect AC (red) or DC (green) operation, providing clear status cues.
How many cycles can the relay endure?
It is tested for ten million mechanical cycles and one hundred thousand electrical cycles, ensuring long‑term reliability.
Can this relay be used in a PLC‑controlled system?
Absolutely. Its DIN‑rail form factor and screw‑terminal connections make it ideal for integration into PLC panels and other automated control systems.





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