STS-M12 CONTACTOR, 12V MASTER

The **STS‑M12 Contactor** is a **continuous‑duty 12 V battery/master solenoid/contact switch** designed for 12 V aircraft electrical systems. It features **rugged all‑metal construction and silver contact elements** to provide high‑current capability and reliable operation in demanding aviation environments. This unit is **FAA‑PMA approved** as a replacement for legacy 12 V battery master contactors on a broad range of general aviation aircraft. --- ## Applications - Main **battery/master contactor** in 12 V aircraft electrical systems - Switching battery power to aircraft bus and electrical equipment - Replacement for legacy battery master contactors - OEM installation and certified aircraft maintenance --- ## Why CJ Aerospace? CJ Aerospace supplies trusted aviation electrical components. We offer fast local delivery, expert technical support, and industry‑proven products that keep operations moving. - 🇦🇺 **Australian‑owned & operated** - 📦 **Stocked locally in Australia for fast dispatch** - 🔍 **Specialist knowledge of aircraft electrical systems** - 🧰 **Used by leading MROs & maintenance professionals** > ✉️ [Contact us sales@cjaerospace.com.au](mailto:sales@cjaerospace.com.au) > Need installation guidance or technical documentation? Contact CJ Aerospace for expert support.

- **Continuous‑duty 12 V battery/master contactor** - **Silver contacts** for high in‑rush and extended life - **FAA‑PMA certified replacement** for legacy master solenoids - **Light spring and low‑current coil** for reliable engagement - **Single coil terminal** (other end tied to battery) for simple wiring - **All‑metal case construction** suitable for aviation environments - **Same OE terminal layout** for straightforward installation - **Upgraded for modern lightweight, high‑torque starters**