24V RELAY 10A SONGLE

🔹 SRD-24VDC-SL-C 24V Relay – Songle, 10A SPDT, PCB Mount

This is the SRD-24VDC-SL-C, a high-quality 24V DC coil relay from Songle’s popular SRD series. It features a compact, sealed design and is capable of reliably switching loads up to 10A at 250VAC or 30VDC. Widely used in industrial controls, home automation, HVAC systems, and various DIY electronics projects.

✅ Specifications:

• Manufacturer: Songle Relay

• Model: SRD-24VDC-SL-C

• Coil Voltage: 24V DC

• Contact Configuration: SPDT (Single Pole Double Throw) – 1 Form C

• Contact Rating (Resistive Load):

  • 10A @ 250VAC

  • 10A @ 30VDC

• Contact Material: AgCdO (Silver Cadmium Oxide) / AgSnO (depending on version)

• Contact Resistance: ≤100mΩ

• Coil Power: Approx. 0.36W – 0.45W

• Coil Resistance: 1600Ω ±10%

• Operate Time: 10ms max.

• Release Time: 5ms max.

• Insulation Resistance: 100MΩ min.

• Dielectric Strength: 1500VAC between coil and contacts (1 minute)

• Terminals: PCB Mount (Through-hole, 5-pin)

• Dimensions: ~19mm x 15mm x 15mm

• Operating Temperature: -40°C to +85°C

• Sealing: Dust cover / sealed type

• Quantity: 1 Piece

📦 Applications:
✔️ Industrial automation and control systems
✔️ Home automation (lighting, appliances, garage doors)
✔️ HVAC systems (heaters, fans, thermostats)
✔️ Automotive and marine (24V systems)
✔️ Power supply switching and distribution
✔️ DIY electronics and Arduino/ESP32 projects (with driver)
✔️ Timers, counters, and programmable controllers

⚠️ Important Driver Note:
A 24V relay cannot be driven directly by a 5V or 3.3V microcontroller. It requires:

• A transistor driver circuit (e.g., 2N2222, BC547, MOSFET)

• A flyback / snubber diode (e.g., 1N4007) across the coil to protect against back EMF

• A separate 24V power supply for the coil