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Lauritz Knudsen SM500 Voltage Monitoring Relay · SPP + selectable under voltage + selectable over voltage · 240 V AC · 2 C/O · MG73BHMG73BH↓ 27% off MRP
BrandLauritz Knudsen
CategoryIndustrial Control
SpecificationSM500 · 3-phase / 1-phase 4-wire · SPP + selectable under voltage + selectable over voltage · Selectable ON delay 0-15 s, OFF delay 5 s · Phase asymmetry 10% fixed · 240 V AC, 2 C/O
Brand SKUMG73BH
AvailabilityIn stock · ships in 24h
Delivery8 to 15 business days after dispatch
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Lauritz Knudsen SM500 Voltage Monitoring Relay · SPP + selectable under voltage + selectable over voltage · 240 V AC · 2 C/O · MG73BH

$31.08/pc-27%
MRP $42.48
Wholesale · 15+ units
$29.53 /pc
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Delivery in 8 to 15 business days after dispatch
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$31.08 /pc
Delivery in 8 to 15 business days
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Brand-authorised stock, sourced through authorised channels
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Worldwide delivery
Dispatched from Ghaziabad, India · fee by weight, shown at checkout
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Wholesale price at 15+ units: $29.53/pc on this product, applied automatically

Voltage monitoring relays from Lauritz Knudsen: single phasing preventers, phase sequence, under/over voltage and neutral loss monitoring for motor and panel protection.

  • SPP includes single phasing, phase sequence and phase unbalance monitoring with auto reset
  • Selectable ON/OFF delays on most models
  • DIN rail mounting
  • 3-phase 3-wire, 3-phase 4-wire or single-phase supply as per model
As published by Lauritz Knudsen. Verify critical parameters against the datasheet before specifying.
Lauritz Knudsen Lauritz Knudsen SM500 Voltage Monitoring Relay · SPP + selectable under voltage + selectable over voltage · 240 V AC · 2 C/O · MG73BH · MG73BH
Device typeVoltage monitoring relay
SeriesSM500
Output contacts2 C/O
Time delaySelectable ON delay 0-15 s, OFF delay 5 s
Threshold / asymmetryPhase asymmetry 10% fixed
Phase3-phase / 1-phase 4-wire
Rated voltage240 V AC
MountingDIN rail
BrandLauritz Knudsen
Brand SKUMG73BH
ELINE2CR7HGJGC
Sold asPer pc
Ratings as published by Lauritz Knudsen (Lauritz Knudsen price list Aug 2026). Verify critical parameters against the datasheet before specifying.
Other Lauritz Knudsen ranges and models in this category, closest in price to this one.
Is Lauritz Knudsen SM500 Voltage Monitoring Relay · SPP + selectable under voltage + selectable over voltage · 240 V AC · 2 C/O · MG73BH genuine and warranty-backed?

Yes. Every Lauritz Knudsen product on Elume is 100% genuine, sourced through authorised channels, and carries the manufacturer's standard warranty.

Do you deliver outside India?

Yes, to every country except Pakistan, North Korea, Iran, Syria, Cuba, Russia, Belarus and Afghanistan, and the Crimea, Sevastopol, Donetsk, Luhansk, Zaporizhzhia and Kherson regions. The delivery fee depends on weight and destination and is shown at checkout; international orders are paid by card in US dollars. The full rules are on our shipping page.

Is there a wholesale or bulk rate?

Yes. Orders of 15 or more pcs get a wholesale price below the listed Elume price, applied automatically and shown on every product page.

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