Protection Relays Pump Controls and Liquid Level Controls LLC8 SERIES Low Level Cutoff Liquid Level Controls Description The LLC8 Series is a low cost, single-probe conductive liquid level control designed for low liquid level cutoff protection. It offers a factory fixed time delay of 1 - 60s and is available for input voltages of 24, 120, or 230VAC. LED indicator illuminates whenever the LLC8s isolated, 10A, SPDT output relay is energized. Sense resistance is fixed from 5K - 250K. Available with manual/automatic reset or a special manual reset with a power outage feature that auto resets the unit when power is restored and the water level is acceptable. 24 and 120VAC units are UL recognized as limit switches under UL353 (230VAC units are UL 508) and CSA certified under Standard 14. Operation Automatic Reset (Reset switch not connected): When liquid Wiring Diagram rises to low level cutoff probe, output relay and LED indicator V = Voltage energize. When liquid falls below the low level cutoff probe, LLCO = Low Level the output relay and LED indicator de-energize after a fixed Probe time delay. G, CP = Ground or Manual Reset (Reset switch connected): When the liquid Common level falls below low level probe, the output relay and LED (Reference) de-energize after a fixed time delay. When the liquid level rises Probe to low level probe, the output relay and LED indicator remain R = Optional NC Reset Switch de-energized until the NC manual reset switch is opened then (not included) they energize immediately. NO = Normally Open Power Outage Manual Reset (Reset switch connected): NC = Normally Closed Metal Tank or use A power outage causes the output relay and LED indicator to additional Probe C = Common or de-energize. Upon restoration of power, if the liquid is touching Transfer Contact the low level probe, the output relay and LED indicator will Relay contacts are isolated. Connect common to conductive tank. Additional probe is re-energize. If the liquid level is below the low level probe, the necessary for non-conductive or insulated tanks. output relay and LED indicator remain de-energized until the NC reset switch is opened. Features & Benefits Ordering Information FEATURES BENEFITS TIME Isolated 12VAC probes Prevents scale buildup on probe INPUT SENSE MODEL DELAY RESET VOLTAGE RESISTANCE Cost effective design for OEM low liquid level (FIXED) Open PCB design cutoff protection LLC825F5M 24VAC 5s 5k Manual/automatic Conformally coated PCB Protects against moisture and corrosion LLC842F103M 120VAC 2s 10k Manual/automatic LED indication Visual indication output relay is energized LLC843F10M 120VAC 3s 10k Manual/automatic Power outage Power outage protection Automatically resets the unit when power is LLC843F10P 120VAC 3s 10k (see ordering table manual reset restored and the water level is acceptable for models) LLC843F26M 120VAC 3s 26k Manual/automatic 24VAC & 120VAC models Required for use as a low level limit switch Power outage meet UL353 LLC843F26P 120VAC 3s 26k manual reset Power outage LLC845F25P 120VAC 5s 25k manual reset Power outage LLC8430F250P 120VAC 30s 250k manual reset Power outage LLC8430F26P 120VAC 30s 26k manual reset LLC8610F12M 230VAC 10s 12k Manual/automatic Power outage LLC863F26P 230VAC 3s 26k manual reset If you dont find the part you need, call us for a custom product 800-843-8848 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062716 wwwwww.littelfuse.com/llc8.littelfuse.com/Protection Relays Pump Controls and Liquid Level Controls LLC8 SERIES Accessories Specifications Control P1015-13 (AWG 10/12), P1015-64 (AWG 14/16), Type Resistance sensing for conductive liquids with P1015-14 (AWG 18/22) Female Quick Connect time delay These 0.25 in. (6.35 mm) female terminals are Sense Voltage 12VAC nominal at probe terminals constructed with an insulator barrel to provide Sense Resistance Fixed 5K - 250K strain relief. Sense Resistance Tolerance 10% Time Delay P1015-18 Quick Connect to Screw Adapter Tolerance 20% Screw adapter terminal designed for use with Repeat Accuracy 10% all modules with 0.25 in. (6.35 mm) male quick Time Delay vs Temp. connect terminals. & Voltage 10% PHST-38QTN Electrode Power Outage Reset Delay 1s Designed for a maximum steam pressure of Input 240 PSI 400 F. UL353 Recognized. Voltage 24, 120, or 230VAC LLP-24 Threaded Probe (24) Tolerance Threaded stainless steel probe measuring 24 24VAC -15% - 20% (61 cm) long. For use with PHST-38QTN liquid 120 or 230VAC -20% - 10% level control electrodes. AC Line Frequency 50/60 Hz Output Type Electromechanical relay Form Isolated SPDT Rating 10A resistive 120/240VAC 1/4 hp 125VAC 1/2 hp 250VAC Protection Surge IEEE C62.41-1991 Level A Isolation Voltage 2500V RMS input to output terminals Mechanical Mounting 0.5 in. (12.7 mm) x .187 (4.76 mm) dia. nylon standoffs (3) Termination Dimensions H 63.5 mm (2.5) W 55.6 mm (2.19) D 47.8 mm (1.88) Electrical 0.25 in. (6.35 mm) male quick connect terminals Reset Switch & Probe(s) 0.187 x 0.03 in. (4.75 x 0.76 mm) male quick connect terminals Environmental Operating/Storage Temperature -40 to 60C / -40 to 80C Coating Printed circuit board is conformal coated to resist moisture & corrosion Humidity 95% relative, non-condensing Weight 5 oz (141.7 g) 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062716 wwwwww.littelfuse.com/.littelfuse.com/llc8