Datasheet > LLC842F103M

LLC842F103M

更新时间： 2024-11-25 00:56:43

品牌	Logo	应用领域
力特 - LITTELFUSE		/
页数	文件大小	规格书
2页	418K
描述
The LLC8 Series is a low cost, single-probe conductive liquid level control designed for low liquid level cutoff protection

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LLC842F103M 数据手册

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 LLC8’s isolated, 10A, SPDT output relay is

energized. Sense resistance is ﬁxed from 5K - 250KΩ. 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

rises to low level cutoff probe, output relay and LED indicator

energize. When liquid falls below the low level cutoff probe,

the output relay and LED indicator de-energize after a ﬁxed

time delay.

Wiring Diagram

V = Voltage

LLCO = Low Level

Probe

G, CP = Ground or

Common

(Reference)

Probe

R = Optional NC

Reset Switch

(not included)

NO = Normally Open

NC = Normally Closed

C = Common or

Transfer Contact

Manual Reset (Reset switch connected): When the liquid

level falls below low level probe, the output relay and LED

de-energize after a ﬁxed time delay. When the liquid level rises

to low level probe, the output relay and LED indicator remain

de-energized until the NC manual reset switch is opened; then

they energize immediately.

Power Outage Manual Reset (Reset switch connected):

A power outage causes the output relay and LED indicator to

de-energize. Upon restoration of power, if the liquid is touching

the low level probe, the output relay and LED indicator will

re-energize. If the liquid level is below the low level probe, the

output relay and LED indicator remain de-energized until the NC

reset switch is opened.

Metal Tank or use

additional Probe

Relay contacts are isolated. Connect common to conductive tank. Additional probe is

necessary for non-conductive or insulated tanks.

Features & Beneﬁts

Ordering Information

FEATURES

BENEFITS

TIME

Isolated 12VAC probes

Prevents scale buildup on probe

INPUT

VOLTAGE

SENSE

MODEL

DELAY

(FIXED)

RESET

RESISTANCE

Cost effective design for OEM low liquid level

cutoff protection

Open PCB design

LLC825F5M

24VAC

5kΩ

10kΩ

Manual/automatic

Conformally coated PCB

LED indication

Protects against moisture and corrosion

Visual indication output relay is energized

LLC842F103M 120VAC 2s

LLC843F10M 120VAC 3s

Power outage

manual reset

Manual/automatic

Power outage

manual reset

Power outage

manual reset

Power outage protection

(see ordering table

for models)

Automatically resets the unit when power is

restored and the water level is acceptable

LLC843F10P

120VAC 3s

10kΩ

26kΩ

LLC843F26M 120VAC 3s

24VAC & 120VAC models

meet UL353

Required for use as a low level limit switch

LLC843F26P

LLC845F25P

120VAC 3s

120VAC 5s

25kΩ

Power outage

manual reset

LLC8430F250P 120VAC 30s

250kΩ

Power outage

manual reset

Manual/automatic

Power outage

manual reset

LLC8430F26P 120VAC 30s

LLC8610F12M 230VAC 10s

26kΩ

12kΩ

26kΩ

LLC863F26P

230VAC 3s

If you don’t ﬁnd the part you need, call us for a custom product 800-843-8848

www.littelfuse.com/llc8

Rev: 1-A-062716

中文翻译

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与LLC842F103M相关器件

型号	品牌	获取价格	描述	数据表
LLC8430F250P	LITTELFUSE	获取价格	The LLC8 Series is a low cost, single-probe conductive liquid level control designed for l
LLC8430F26P	LITTELFUSE	获取价格	The LLC8 Series is a low cost, single-probe conductive liquid level control designed for l
LLC843F10M	LITTELFUSE	获取价格	The LLC8 Series is a low cost, single-probe conductive liquid level control designed for l
LLC843F10P	LITTELFUSE	获取价格	The LLC8 Series is a low cost, single-probe conductive liquid level control designed for l
LLC843F26M	LITTELFUSE	获取价格	The LLC8 Series is a low cost, single-probe conductive liquid level control designed for l
LLC843F26P	LITTELFUSE	获取价格	The LLC8 Series is a low cost, single-probe conductive liquid level control designed for l
LLC845F25P	LITTELFUSE	获取价格	The LLC8 Series is a low cost, single-probe conductive liquid level control designed for l
LLC8610F12M	LITTELFUSE	获取价格	The LLC8 Series is a low cost, single-probe conductive liquid level control designed for l
LLC863F26P	LITTELFUSE	获取价格	The LLC8 Series is a low cost, single-probe conductive liquid level control designed for l
LLCC	OPLINK	获取价格	Low Loss CWDM

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