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Duplicate Legrand MCBs and RCCBs: The Checks That Matter Most

MCBs and an RCCB being installed in a home distribution board

Of everything counterfeiters copy, the MCB is the most cynical. A fake wire is a slow hazard; a fake breaker is a betrayal — a device whose only job is to trip during a fault, built by someone who never intended it to. Legrand breakers are copied because they sit in almost every serious distribution board specification, and because a DB, once closed, is a cupboard nobody opens. You cannot test a breaker's fault performance at the counter, so you must verify everything you can see.

What to verify on the breaker itself

  • ISI / standards mark. Genuine MCBs carry the applicable standards marking clearly on the front face. Absent, smudged or crooked marking is disqualifying.
  • Rating printed on the front. The current rating (6A, 10A, 16A, 32A) and curve (B or C) must be printed sharply on the face. Fuzzy or misaligned printing is a manufacturing tell.
  • Breaking-capacity marking. Genuine breakers state their breaking capacity (for example 10kA) on the front. Counterfeits often omit it or print it inconsistently across pieces.
  • Serial and date codes. Look for moulded or printed serial and date coding on the body. Identical codes across every piece in a box suggest copies.
  • Terminal quality. Open the terminal screws: genuine units have clean, well-machined terminals and screws that turn smoothly. Rough, burred terminals and gritty screws betray cheap manufacture.
  • Body and packaging. Crisp brand printing, correct spelling, solid moulding without flash lines; and where Legrand provides a hologram, QR code or scratch-verification feature on the pack, use it before paying.

The price test

The electrical trade runs on 3 to 5 percent margins, and breakers are no exception. A genuine seller cannot quote Legrand MCBs or RCCBs far below the market — so a steal price on protection devices is the classic duplicate signature, and the worst possible place to accept it. Compare two or three shops as a habit.

The channel test

Buy protection devices only from authorised dealers and distributors. Ask to see the authorisation certificate, and insist on a GST bill naming Legrand and the exact ratings supplied — your electrician and your insurer may both need it one day. The general framework is in original vs duplicate electrical products.

Get a distributor reference before you order

Mount Cable stocks Legrand along with Schneider, Anchor, Greatwhite and HPL, with justified pricing across the board. WhatsApp your full DB schedule — MCBs, RCCBs, ratings, quantities — to +91 88676 76700 and receive an exact reference quote within 60 minutes, with no pressure to buy from us. If a seller's price is far below that reference, walk away; with breakers, the discount is never worth the fault it fails to clear. See also our price lists and quote page.

Frequently asked questions

How do I check whether a Legrand MCB or RCCB is genuine?
Buy in sealed boxes, confirm the printing is sharp and correctly aligned, check that the breaking capacity in kA is clearly marked, inspect the moulding for flash or misaligned seams, feel for a firm defined toggle action, and scan the verification code where the brand provides one.
Why is a counterfeit MCB more dangerous than a counterfeit switch?
Because its whole purpose is to act during a fault, and a counterfeit's trip characteristics and breaking capacity are unverified. It may click convincingly in normal use and do nothing when a real fault current arrives, which is the one moment it matters.
What breaking capacity should a domestic MCB have?
10kA is standard for Indian domestic MCBs, with some cheaper genuine ranges at 6kA. The figure is printed on the device, so check it. On a counterfeit the printed rating is simply a number with nothing behind it.
Does a duplicate RCCB still trip?
It may trip at some current, but not reliably at the rated 30mA sensitivity or within the required time, which is precisely what determines whether a person survives a shock. An RCCB is the one device in a house that protects people rather than wiring.
Where should switchgear be bought?
Only from an authorised distributor, in sealed boxes, with an invoice naming the brand and exact device type. Switchgear is the category where the price saving is smallest and the consequence of failure largest.

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