Description
Product Overview
The Song Chuan air conditioning relay is engineered for reliable performance in automotive climate control systems. Featuring a quick‑connect terminal, silver tin oxide contacts, and a 30 A current rating, this surface‑mount relay operates automatically at 12 V coil voltage with a low coil resistance of 100 mΩ. Built to meet RoHS standards, it delivers consistent switching for both cooling and heating circuits, with an upper temperature rating of 85 °C.
Usage
Designed for automotive HVAC applications, this relay is ideal for replacing factory‑installed compressor relays or upgrading aftermarket cooling systems. It suits vehicles, trucks, and RVs that require dependable temperature regulation, as well as home appliance projects involving heating control. 
Why Choose Us
Song Chuan combines decades of expertise in relay manufacturing with strict quality controls, ensuring each unit meets exact specifications. Our relays are RoHS‑compliant, feature high‑grade tin oxide contacts for reduced wear, and include optional dust‑cover or sealed versions for harsh environments. Trust in a product that consistently ranks among top automotive replacement parts.
Key Features
- Quick‑connect terminals for fast, tool‑free installation
- Silver tin oxide contacts delivering low resistance and high durability
- 30 A current rating and 12 V coil voltage for reliable HVAC operation
- Surface‑mount design compatible with open‑frame or sealed enclosures
- RoHS‑compliant construction meeting EU environmental directives
FAQ
What is the coil voltage requirement?
The relay operates with a 12 V DC coil voltage, suitable for standard automotive electrical systems.
Can this relay be used for heating control?
Yes, its 30 A rating and robust contact material make it ideal for heating control circuits in both automotive and home appliance applications.
Is the relay compatible with sealed enclosures?
Optional versions include dust‑cover or fully sealed designs, allowing use in environments exposed to moisture or contaminants.
Does the product meet environmental standards?
All units comply with the RoHS Directive 2011/65/EU, ensuring they are free from hazardous substances.
What mounting type is required?
The relay is a surface‑mount type, designed for easy placement on printed circuit boards or chassis surfaces.





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