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Lauritz Knudsen AU Standard RCBO · 4P (FP) · 40 A · 30 mA · Type Adi · C curveAUF3D404003↓ 36% off MRP
BrandLauritz Knudsen
CategorySwitchgear
SpecificationRCBO · 4P (FP) · 40 A · C curve · 10 kA · 30 mA · Type Adi (AC + pulsating DC + harmonics)
Brand SKUAUF3D404003
AvailabilityIn stock · ships in 24h
DeliveryPan-India · 3–7 working days
Lauritz Knudsen· In stock
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Lauritz Knudsen AU Standard RCBO · 4P (FP) · 40 A · 30 mA · Type Adi · C curve

Sensitivity: 30mA
Current Rating: 40A
₹7,223/pcincl. GST-36%
₹6,121 + 18% GST · MRP ₹11,246
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₹7,223 /pc incl. GST
Free pan-India delivery

Lauritz Knudsen AU Standard RCBO · 4P (FP) · 40 A · 30 mA · Type Adi · C curve: Elume price today ₹7,223 per pc incl. GST, 36% below the ₹11,246 MRP. Over the last 30 days it ranged from ₹6,879 on 7 Sep to ₹7,223.

Price history
Elume price over time, day by day. Market comparison appears once we track this item.
9 Jul to 7 Oct
₹12,033₹10,624₹9,215₹7,806₹6,397₹11,246₹7,223
9 Jul27 Jul14 Aug1 Sep19 Sep7 Oct
Elume today
₹7,223
MRP
₹11,246
Lowest in view · 17 Aug
₹6,879
Highest in view · 3 Oct
₹7,223
Same key specifications, different brands - matched on spec, never on looks. Tap a product to open it.Full comparison page →
Product
Type
Poles
Rating
Curve
Sensitivity
Price
RCBO · Type A
4P / 3P+N (three phase)
40 A
C
30 mA
₹6,121 +GST /pc
₹7,223 incl. GST
Viewing above ↑
RCBO
4P / 3P+N (three phase)
40 A
-
30 mA
₹4,886 +GST /pc
₹5,766 incl. GST
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100% genuine
Brand-authorised stock with full manufacturer warranty
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GST invoice
Tax invoice on every order · GST billing with tax split
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Pan-India delivery
3–7 working days to any site in India
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Wholesale built in
−5% auto-applies at 15+ units - ₹6,862/pc on this product

Lauritz Knudsen AU Standard RCBO · 4P (FP) · 40 A · 30 mA · Type Adi · C curve is an RCBO from Lauritz Knudsen. It combines earth-leakage protection with overload and short-circuit protection for one circuit in a single device. Key ratings: Poles 4P (FP), Rated current 40 A, Trip curve C curve, Breaking capacity 10 kA, Sensitivity 30 mA, Type Adi (AC + pulsating DC + harmonics). It is built to IEC 61009-1, IS 12640-2, EN 61009-1.

  • Earth-leakage and overload protection in one device
  • Suitable for isolation
  • Wide range of site-mountable accessories
As published by Lauritz Knudsen. Verify critical parameters against the datasheet before specifying.
Lauritz Knudsen Lauritz Knudsen AU Standard RCBO · 4P (FP) · 40 A · 30 mA · Type Adi · C curve · AUF3D404003
Device typeResidual current breaker with overload protection (RCBO)
SeriesAU
Poles4P (FP)
Rated current40 A
Trip curveC curve
Breaking capacity10 kA
Sensitivity (IΔn)30 mA
RCCB typeType Adi (AC + pulsating DC + harmonics)
Rated voltage415 V
Width7.5 modules
Reference standardIEC 61009-1, IS 12640-2, EN 61009-1
Current rating40 A
BrandLauritz Knudsen
Brand SKUAUF3D404003
ELINEDCM4MDF42
Sold asPer pc
Ratings as published by Lauritz Knudsen (Elume catalogue; Lauritz Knudsen smartshop; Lauritz Knudsen price list Aug 2026; Product name). Verify critical parameters against the datasheet before specifying.
Read: Havells vs ABB vs Lauritz Knudsen: Which Switchgear for Your Home? →
Which is the best MCB brand in India: Havells, ABB or Lauritz Knudsen?
At correct specification, all three protect reliably; they differ in range, price and availability rather than trip-when-needed quality. Havells wins on availability and range breadth, ABB on engineering pedigree, Lauritz Knudsen on premium build at keen prices.
Is Lauritz Knudsen the same as L&T Switchgear?
Yes; it is the renamed erstwhile L&T Switchgear business, continuing the same Indian manufacturing legacy under new ownership and branding. Ranges like Tripper and EXORA carry that lineage forward.
Can I mix MCB brands in one distribution board?
Electrically yes; DIN-rail standards make devices interchangeable, and a mixed board protects correctly if each device is rightly rated. Single-brand boards are still preferable for spares, warranty simplicity and appearance.
Is Lauritz Knudsen AU Standard RCBO · 4P (FP) · 40 A · 30 mA · Type Adi · C curve 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 across India?

Yes - we deliver pan-India, usually within 3–7 working days. Delivery is free on orders of ₹4,000 and above; a flat ₹100 fee applies from ₹2,000 to ₹4,000 and ₹200 below ₹2,000.

Can I get a GST invoice?

Yes. Enter your GSTIN at checkout and we issue a GST invoice with tax shown separately, so businesses can claim input tax credit.

Is there a wholesale or bulk rate?

Yes. Orders of 15 or more pcs get a wholesale rate about 5% below the listed Elume price - shown on every product page.

What if I find it cheaper somewhere else?

Tell us. If the same Lauritz Knudsen product is listed for less, GST and delivery included, by an authorised Indian online seller, we match that price - before you order or within 7 days of ordering. The terms are on our lowest-price guarantee page.

What is the return policy?

Unused items in original packaging can be returned within 7 days of delivery, with free return shipping.

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