The LC1E300ADCH2S260N: This contactor switches DC resistive loads up to 300 A continuous, with a maximum switching voltage of 1000 V DC. It's a single-pole normally-open device with a 12 V DC coil, part of the Easy TeSys range. The low contact impedance — 0.5 mOhm at rated current — keeps voltage drop minimal, so you don't lose headroom on a long DC bus. If you're switching low-level signals, note the minimum switching thresholds: 0.1 A and 8 V DC. Below that, contact resistance may not reliably break the circuit — typical for a power contactor, but worth confirming if your load is a few milliamps.
Wiring & Mounting
Mounts vertically (vertical support specified). Power connections use M8 bolts with flat and spring washers; torque to 8–10 N·m. Control circuit comes with a 40 cm two-wire supply, so plan for that length when routing to the DC source. The coil holds between 0.85 and 1.1 Uc (operational) and drops out between 0.1 and 0.75 Uc. Sealed to IP60, so it's dust-protected but not waterproof. Operates from -40 to 85 °C, same range for storage. At altitude up to 4000 m, no derating needed.
Short-Time Overload Capacity
Continuous 300 A is the baseline, but it can handle 400 A for 10 minutes, 600 A for 5 minutes, or 1000 A for 30 seconds. Useful for motor inrush or capacitor charging pulses, but remember: that's on a resistive load curve, not inductive break.