iRhapsody 4-Pin Waterproof Relay Pack, 12V DC, SPST, 40A Load – Heavy-Duty Wires (5-Pack)

Overview

Meet the iRhapsody 4-pin waterproof relay kit, a compact, rugged switch designed for automotive and electronics projects. Each relay uses a 12V DC coil and is rated NO 40A at 14V DC, offering a reliable on/off signal for higher-current circuits. The pack includes five relays with heavy-duty wires, ready for quick wiring into control boxes, fuse blocks, or harnesses.

The design strikes a balance between efficiency and durability. The coil operates between 6 and 8 V DC, with a release threshold as low as 0.6 V DC, and it switches up to 15.6 V DC without drama. Coil resistance sits at 80 Ω, drawing about 1.8 W when energized. The relay’s mechanical life reaches into the millions, and electrical life tops out at 100,000 cycles under typical switching conditions.

In the real world, you’ll find this kit dependable across a wide range of environments. It handles a broad temperature span from -30 to +80 degrees Celsius and tolerates humidity between 40% and 85%. Electrical insulation is strong, with at least 100 mΩ insulation resistance and dielectric strength suitable for both open-contact and coil-to-contact scenarios. Actuation is swift (≈7 ms) with a quick release (≈5 ms), enabling responsive control in dynamic systems.

Key advantages

• Rugged waterproof housing with dust resistance helps perform in challenging conditions, though immersion is not intended.
• Thick 12-gauge load wires support high-current connections and simplify wiring in tight dashboards or harnesses.
• SPST configuration provides straightforward on/off control for single circuits, with robust NO contact ratings.
• Convenient 5-pack format supports multiple circuits or spare units for quick replacement.

• Safety-focused guidance emphasizes tight load connections, following the wiring diagram, and aligning with the relay’s safety requirements.
• Supports both positive and negative activation, offering flexible wiring options for various setups.
• Compact footprint pairs well with small control boxes, fuse blocks, or automotive harnesses.

Technical details at a glance

• Coil voltage: 12 V DC; coil power: 1.8 W; coil resistance: 80 Ω.
• Operate voltage: 6–8 V DC; release voltage: 0.6–3.6 V DC; max applied voltage: 15.6 V DC.
• Contact rating: NO 40 A at 14 V DC; max switching power up to 560 W.
• Life expectancy: electrical 100,000 operations; mechanical 10,000,000 operations.
• Environment: -30 to +80°C; humidity 40%–85%; insulation resistance ≥100 mΩ; dielectric strength 500 VAC (open contacts); 750 VAC (coil-to-contact).
• Response times: operate ≈7 ms; release ≈5 ms.

Package contents: 5 x 12V DC 4-pin waterproof relays with heavy-duty wires. This kit is built for flexible, durable switching in automotive, off-grid, and hobby electronics projects.