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Brand: Lovato Electric
Lovato LVM40A240 LVM40 Level Control Relay
Description
Level relay with adjustable electrode sensitivity
The LVM40A240 is a modular level monitoring relay from Lovato Electric. Function: multifunction: emptying and alarms, filling and alarms, emptying with priority start-up change, filling with priority start-up change, well draining and tank filling and alarms. It senses the conductive liquid between 5 electrodes and works with SN1, SCM, CGL, PS31 or PS3S electrodes and holders, as the datasheet lists.
Sensitivity is adjustable (2.5-200 adjustable kΩ), the electrode voltage is 10 Vpp so there is no electrolysis wear on the probes, and the relay supply is 220-240 VAC with a power consumption of 4.5 VA.
Technical specifications
| Parameter | Specification |
|---|---|
| Order code | LVM40A240 |
| Product designation | Level control relay multifunction. Single voltage. Modular version |
| Product type designation | LVM40 |
| Function | Multifunction: emptying and alarms, filling and alarms, emptying with priority start-up change, filling with priority start-up change, well draining and tank filling and alarms |
| Supply voltage Type | Single voltage |
| AC (min) | 220 VAC |
| AC (max) | 240 VAC |
| Operating voltage range | 0.85-1.1 Us |
| Rated frequency | 50/60 Hz |
| Power consumption Max | 4.5 VA |
| Power dissipation Max | 2.8 W |
| Number of connectable electrodes | 5 |
| Type of electrode | Electrode and electrode holders: SN1 / SCM / CGL / PS31 / PS3S or similar |
| Electrode voltage | 10 Vpp |
| Sensitivity | 2.5-200 adjustable kΩ |
| Tripping time | 1 s |
| Resetting time | 1 s |
| Probe tripping delay | 1-10s |
| Number of relays | 2 |
| Relay state | Normally de-energised, energises at tripping |
| Contact arrangement | 1 changeover contact C/O-SPDT + 1 contact NO-SPST |
| Rated operational voltage AC (IEC) | 250 VAC |
| Maximum switching voltage | 400 VAC |
| IEC Conventional free air thermal current Ith ≤ 40°C | 8 A |
| UL/CSA and IEC/EN 60947-5-1 designation | B300 |
| Electrical life (with rated load) | 10⁵ cycles |
| Mechanical life | 30×10⁶ cycles |
| Indication | 1 green LED indicator for power on 2 red LEDs for relay state 2 red LEDs for probe state |
| Functions and protections provided | 5 detecting electrodes (MIN1, MAX1, MIN2, MAX2 and COM, Sensitivity adjustment 2.5…200k Ω, Adjustable sensitivity full-scale value 25-50-100-200 k Ω, Separate sensitivity adjustment for MAX probe (foam detection), Emptying function, Filling function, Emptying function with MIN and/or MAX alarm, Filling function with MIN and/or MAX alarm, Emptying function with pump priority change, Filling function with pump priority change, Tank filling, well drawing and alarm, Programming selector for 5 different |
| Rated insulation voltage Ui | 415 V |
| Rated impulse withstand voltage Uimp | 6 kV |
| Operating frequency withstand voltage | 4 kV |
| Double insulation Supply / relay / electrode | ≤250 VAC |
| Operating temperature (min) | -20 °C |
| Operating temperature (max) | +60 °C |
| Storage temperature (min) | -30 °C |
| Storage temperature (max) | +80 °C |
| Execution | Modular DIN rail mounting |
| N° of modules | 3 |
| Material | Self-extinguishing polyamide |
| Mounting | 35mm DIN rail (IEC/EN 60715) or by screws using extractable clips |
| IEC degree of protection | IP40 on front / IP20 on terminals |
| Dimensions (W x H x D) | 53.5 x 104.7 x 64.9 mm |
| Weight | 278 g |
What to match before ordering
Choose the relay by function (emptying, filling, alarms, priority change) and by supply. Higher-number LVM versions add more electrodes, alarms and time delays.
Use clean-water settings for low sensitivity values and a higher kilo-ohm limit for conductive but contaminated liquids; check the datasheet for the allowed ranges.
Where it is used
Typical use is water storage tanks, sump pumps, boiler feed and cooling circuits. Wire the relay output to a pump contactor, fit electrode holders at the maximum and minimum levels and one common electrode at the bottom of the tank.
Documents and quotation
Download the attached datasheet for LVM40A240 from the Lovato Electric online catalogue (English) to see every parameter in full. Before ordering, confirm the supply voltage and system type, the contact arrangement and the DIN-rail space available; datasheet values can be revised by the manufacturer. For related parts browse controllers & data acquisition. Send the order code LVM40A240, the quantity and the delivery location through the quotation form and Seven Star LLC, an independent supplier in Muscat, will reply with availability.
Datasheets & Documents
- Datasheet Lovato Electric LVM40A240 datasheet (EN, catalogue export) Download
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About brand
Lovato Electric is the Italian manufacturer of low-voltage electrical components for industrial automation and power distribution: contactors, motor protection circuit breakers, soft starters, variable speed drives, power factor controllers, transfer switch and generator controllers, and energy meters. It was founded in Bergamo in 1922 and has been run by the same family for four generations. Its headquarters is in Gorle, near Bergamo, and it celebrated its centenary in 2022.
Seven Star LLC is an independent supplier in Muscat. We list Lovato motor control, drives and power management products, and supply them to panel builders, contractors and maintenance teams in Oman and the GCC by order code.
Lovato Electric at a glance
| Established | 1922, Bergamo, Italy |
|---|---|
| Headquarters | Gorle (Bergamo), Italy |
| Ownership | Private, family-run for four generations |
| Product families | Contactors and relays, motor protection circuit breakers, motor starters, soft starters, variable speed drives, power factor controllers, ATS and gen-set controllers, multimeters and energy meters, micro PLCs |
Lovato products we list
| Family | Models | Typical use |
|---|---|---|
| Contactors | BF0910A230, BF1810A230, BF2510A230, BF2600A230, BF09T4A230 4-pole, BFS0923A024, 11BG0910A230 mini, 11BGR0901A048 reversing | Switching motors, heaters, lighting and capacitor banks |
| Motor protection and starters | SM1P0650, SM1P1000, SM1P3200, M1P enclosed DOL starter, ME024FD024, ME070RSD024, 31L48 time relay | Short-circuit and overload protection and direct starting of motors |
| Soft starters | ADXL0030600, ADXL0085600, ADXL0135600, ADXT0034, ADXT0084, ADXT0139 | Reducing starting current and mechanical shock on pumps, fans and compressors |
| Variable speed drives | VLA1, VLB1, VLB3 0.75 kW, VLB3 2.2 kW, VLB3 5.5 kW, VLB3 22 kW, VT1 | Speed control of pumps, fans and conveyors to save energy |
| Power management and control | DCRG8, DCRL8 PF controllers, ATL600 ATS controller, RGK600 gen-set controller, DMG200 multimeter, DMED300T2 energy meter, LRD20 micro PLC | Power factor correction, mains/generator changeover and energy monitoring |
Lovato order codes describe the product. On a contactor such as BF0910A230, "BF09" is the frame and rated current (9 A in AC-3), "10" is the built-in auxiliary contact (one normally open), "A" means an AC coil and "230" is the coil voltage. The coil voltage must match the control circuit exactly, so it is the most common detail to check when replacing one. For motors, a soft starter limits the inrush current at start and stop, while a variable speed drive controls the speed continuously and saves energy on pumps and fans that do not need full flow all the time.
Where Lovato products are used
In Oman and the GCC, Lovato components are built into motor control centres, pump and HVAC panels, capacitor banks for power factor correction, generator and ATS panels, and machine control panels for industry, water and buildings.
Ordering Lovato products: what we need
Send the full Lovato order code. For contactors and starters, confirm the coil or control voltage. For drives and soft starters, send the motor power, current and supply voltage. For power factor controllers, send the number of steps and the CT ratio.
Facts checked against Lovato Electric company profile brochures, October 2026.
Browse Lovato Electric products by category: Motor Soft Starters, Automation Accessories, Controllers & Data Acquisition, PLC & I/O Cards, Circuit Breakers, Diesel Generator Spare Parts.
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Frequently Asked Questions
What does the LVM40A240 control?
Multifunction: emptying and alarms, filling and alarms, emptying with priority start-up change, filling with priority start-up change, well draining and tank filling and alarms.
How many electrodes can be connected?
5.
What is the sensitivity range?
2.5-200 adjustable kΩ.
What supply does it need?
220-240 VAC.
Which electrodes does it use?
SN1, SCM, CGL, PS31 or PS3S electrodes and holders, or similar, as listed in the datasheet.
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