Industrial LLC14A1A F12-D Liquid Level Control

The LLC14A1A F12-D Liquid Level Control is a single‑probe, conductive‑liquid level switch in the Littelfuse/SSAC LLC1 family designed to sense liquid presence and drive an auxiliary circuit with a built‑in time delay to prevent rapid cycling. It is rated for 120 VAC input and uses a low‑voltage AC sense signal between the probe and common, isolated from the power input and output with an isolation rating of ≥1500 Vrms. The unit provides both a non‑isolated SPST output and an isolated SPDT (form‑C) output, suitable for simple on/off control or switching of pumps, alarms, or relays in OEM equipment and commercial appliances; a fixed 1‑second delay further stabilizes operation when the liquid nears the probe. Termination is via 0.25 in (6.3 mm) quick‑connect terminals, and mounting uses 0.50 in (12.7 mm) nylon standoffs with three screws. Dimensions are 3.5 in high, 2.75 in wide, and 2 in deep, with 50/60 Hz operation. The sense voltage is described as low‑voltage AC between the probe and common, and the load can be driven up to 10 A resistive at 120/240 VAC (28 VDC) or 1/3 HP at 120/240 VAC. This LLC1 Series device is designed for use with conductive liquids in industrial environments, providing reliable level‑triggered switching for pumps, alarms, or other control equipment.