iRhapsody 12V 5-Pin SPDT Automotive Relays, 25-Pack — 40A/30A High-Current Durable

iRhapsody 12V 5-pin SPDT relay kit provides high-current switching for automotive and 12V systems, delivering reliable 40A/30A performance in a compact, universal 5-prong package.

This 25-piece set of 12 V DC, 5-pin SPDT relays is built for repeated switching tasks in vehicles and other 12V applications. Each relay is rated to handle heavy loads—up to 40A on the normally-open contact—and is engineered for durability with long mechanical and electrical lifetimes. The relays meet practical environmental and electrical specifications so you can integrate them into car audio, lighting, security systems, power trim and tilt controls, and many DIY 12V projects.

How robust are these relays for automotive use?

These relays are designed to meet real-world automotive conditions with high switching capacity and resilience to vibration, shock, and temperature extremes. They provide consistent contact performance throughout long duty cycles and tolerate typical vehicle environments.

• Contact rating: NO 40A at 14V DC, max switching power 560 W
• Temperature range: -30°C to +80°C for broad environmental tolerance
• Vibration resistance: 10–55Hz, 1.5mm; shock limits up to 100g
• Electrical life: ~100,000 operations; mechanical life: ~10,000,000 operations

What electrical specifications should installers know?

The relays use a 12V nominal coil and are engineered for predictable operate and release behavior. Coil power and resistance are specified to help designers plan driver circuits and fusing for safe operation.

• Nominal coil voltage: 12 V DC; coil power: 1.8 W; coil resistance: 80 Ω
• Must-operate voltage: 6–8 V DC; must-release: 0.6–3.6 V DC
• Maximum applied voltage: 15.6 V DC; contact resistance ≤100 mΩ (measured at 6V DC, 1A)
• Dielectric strength: 500 VAC between open contacts; 750 VAC between contacts and coil

Which applications are these relays best suited for?

These are universal automotive relays compatible with many 12V systems. Their SPDT configuration allows switching between normally-open and normally-closed circuits, making them versatile for power control and signal isolation tasks.

• Automotive: headlights, LED auxiliary lights, power windows, trim and tilt motors
• Vehicle electronics: car audio amplifiers, alarm and immobilizer systems
• 12V DIY projects and marine applications requiring high-current switching
• Pinout: 30 (VDC), 85 (ground coil), 86 (trigger coil), 87 (N/O), 87a (N/C)

Who is this for? This 25-pack from iRhapsody is aimed at technicians, installers, and hobbyists who need a reliable supply of standardized 5-pin SPDT relays for multiple installations or replacements. If you work on cars, boats, or 12V systems and want a durable, high-current relay that fits common sockets and wiring harnesses, this kit offers value, consistent performance, and long operational life. The relays are suitable for fleet maintenance, audio installers, electrical shops, and makers seeking dependable switching components without frequent replacements.