LLC44B1A
Littelfuse Relays, LLC4 Series

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LLC44B1A Littelfuse Relays, LLC4 Series, Liquid Level Control, 120VAC, 1 Sec
MFG Item Number
LLC44B1A
Littelfuse
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Product images are for illustration purposes only. Please review specifications and documentation for exact product details.

LLC44B1A Littelfuse Relays, LLC4 Series, Liquid Level Control, 120VAC, 1 Sec

MFG Item Number
LLC44B1A
Littelfuse
Series
LLC4
More specs
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Description

Relays, LLC4 Series
Item #
LLC44B1A
Liquid Level Control, 120VAC, 1 Sec

LLC4 Series Information

  • Single Probe Level Control for Conductive Liquids
  • Isolated AC Voltage on the Probes
  • Adjustable or Fixed Sensing up to 250kOhms
  • Fill or Drain Operations Available
  • Isolated, 10A, SPDT & Non‑Isolated, SPST Output Contacts
The LLC1 Series is a single probe conductive liquid level control designed for OEM equipment and commercial appliances. This unit may be ordered with selectable or fixed fill or drain operation. A time delay (1‑60s) prevents rapid cycling of the output relay. On adjustable units, the sensitivity adjustment allows accurate level sensing while ignoring foaming agents and floating debris. Isolated AC voltage is provided at the probe to prevent electrolysis. A trickle current of less than 1mA determines the presence or absence of liquid between the probe and common. The LLC1 Series printed circuit board is conformal coated to resist moisture and corrosion.

Drain (Pump‑Down Mode): When the liquid level rises and touches the probe, a fixed time delay begins. This time delay prevents rapid cycling of the output relay and its load. At the end of the time delay, the output relay energizes and remains energized until the liquid level falls below the probe. The output relay then de‑energizes and remains de‑energized until the liquid again touches the probe.

Fill (Pump‑Up Mode): When the liquid level falls below the probe, a fixed time delay begins. This time delay prevents rapid cycling of the output relay and its load. At the end of the time delay, the output relay energizes and remains energized until the liquid level rises and touches the probe. The output relay then de‑energizes and remains de‑energized until the liquid level again falls below the probe.

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Specifications

Specifications
Manufacturer Part Number LLC44B1A
Manufacturer Littelfuse
Product Series LLC4
Family Series Littelfuse Relays, LLC4 Series
Description Liquid Level Control, 120VAC, 1 Sec Delay, Fill Operation, Adjustable Sense Resistance
Function Pump Up
Coil Voltage 120 VAC
Output Current 4 A
Output Configuration SPDT
Net Weight 0.55 lbs
Gross Weight 0.61 lbs
Alternatives
LCP2A250F1
LCP2A250F1
Macromatic Relays, LCP Series