Littelfuse LLC44B30A Single-Probe Liquid Level Control 120VAC 30 Second Delay

The Littelfuse LLC44B30A is a single-probe liquid level control designed for pump-up applications in industrial pumping systems. This unit combines advanced resistance-sensing circuitry with solid-state timing to provide reliable level maintenance through a single probe configuration.

Key Features:

• 120VAC input voltage for standard industrial applications
• Fixed 30-second time delay to prevent rapid cycling
• Adjustable sensitivity control for accurate level sensing while ignoring foaming agents and floating debris
• SPDT (Form C) output relay configuration rated at 4 amps
• 8-pin octal plug-in design for easy installation and replacement
• Operating temperature range: -20°C to 60°C (-4°F to 140°F)
• Resistance sensing range: 1kΩ to 250kΩ
• Compact dimensions: 2.39" H x 1.78" W x 2.91" D

The LLC44B30A is part of Littelfuse's LLC4 Series, engineered to control liquid pumping operations and detect abnormalities in pumping systems. When the liquid level falls below the probe, the output relay energizes to activate the pump, filling the tank until the desired level is reached. The adjustable sensitivity feature ensures accurate detection in challenging environments with foam or debris. Requires compatible 8-pin octal socket and liquid level probe (sold separately).