BIS Certification for Switch-Socket-Outlets (Non-Interlock Type)

The switch-socket-outlet is the single point where every plugged-in appliance in India meets the building's wiring: a socket to receive the plug and a switch to control it, combined into one unit on the same plate. It is the hardest-working accessory in any installation - carrying heater and geyser loads, switched dozens of times a day, gripped by every family member - and in the non-interlock type covered here, the switch and socket operate independently, so the unit must be safe in every combination of states.

India's modular-accessory boom has made this a massive branded category, and an equally massive grey one. The combined construction is exactly what makes quality critical: a failing switch mechanism now sits millimetres from the socket contacts feeding your appliance, in one moulded body. IS 15787 exists to certify that whole combination.

IS 15787:2008 is the Indian Standard for Switch-Socket-Outlets (Non-Interlock Type) - units combining a switch and a socket-outlet in one accessory, where the switch is not mechanically interlocked with plug insertion. It specifies the electrical, mechanical, thermal and endurance requirements of the combined unit. The practical scope:

This accessory handles the two riskiest electrical events in a home thousands of times over: making and breaking load current at the switch, and plug insertion at the socket. Sub-standard units fail in predictable, dangerous ways - switch contacts weld or arc under geyser loads, socket contacts lose grip and overheat plugs, shutters fail and leave live holes at child height. Because the switch and socket share one body, one failure heats the other. Compulsory certification puts the full combined unit through breaking-capacity, endurance and temperature-rise proof before it can be sold.

Every point where an appliance meets the supply:

Testing proves the combined unit survives real use - switching under load, repeated plugging, and heat:

This order is strict on exemptions. There is essentially one exemption: goods manufactured domestically purely for export. There is no exemption for goods imported as a component of a finished product, and no small-unit turnover exemption - Micro and Small Enterprises were only given later compliance dates (3 January 2025 and 3 October 2024 respectively), and both of those dates have now passed. Today the order applies with full force to every manufacturer, of every size, selling into India.

Certification is the law - but for serious manufacturers it is also a commercial upgrade:

• Legal market access: manufacture, stock, sell and import freely in India - no customs detention, no seizure risk.
• Buyer and tender qualification: electrical wholesalers, project contractors, utilities and government procurement all verify the CM/L licence before the price.
• Consumer trust: the ISI Mark is the most recognised quality mark in Indian electrical retail - it moves product off the shelf.
• Competitive moat: uncertified competitors - especially cheap imports - are now legally out of the market; certified early movers absorb their share.
• Longer licence stability: under the 2026 amendment to the BIS Conformity Assessment Regulations, licences now run up to 5 years, cutting renewal overhead dramatically.

BIS expects documentation in three broad groups. Getting the format right is the single biggest cause of delay for first-time applicants, which is exactly the part we take off your plate:

• Administrative: company registration, factory licence, trademark proof, and - for foreign makers - the Authorized Indian Representative appointment.
• Technical: product drawings and specification, raw-material details, machinery list, in-house test equipment list, and the recognised-lab test report.
• Quality control: the quality manual, competent QC personnel details, and the process and quality-control flow for the product.

We keep this short here because we maintain dedicated step-by-step guides. In brief: map your product to the correct standard, prepare the factory and in-house testing, file the application in BIS format, clear the factory audit and sample drawal, pass independent lab testing, and receive your licence with its CM/L number. Indian manufacturers follow the domestic Scheme-I route - full detail on our BIS Certification for Indian Manufacturers page. Manufacturers outside India go through FMCS with an Authorized Indian Representative - full detail on our FMCS guide.

Average timeline: the official standard timeframe is about 30 days for a fully-prepared Indian application; realistically plan for a few weeks to a few months depending on lab queues and factory readiness. For foreign manufacturers under FMCS, the standard timeframe is about 180 days.

This changed recently, and most websites have not caught up. Under the BIS (Conformity Assessment) Amendment Regulations, 2026 - notified on 25 February 2026 - a Scheme-I licence is now granted for periods of up to 5 years (previously the initial grant was typically up to 2 years), and on expiry it can be renewed for a further period of up to 5 years.

The trade-off: the applicable licence fee is now payable annually in advance, together with your production statement. Miss the due date and the licence can be suspended for up to 90 days (with a late fee to restore it), and continued default triggers the cancellation provisions. In practice: renewals are rarer, but the annual fee-and-production deadline is now a hard compliance event. Renewal process: apply through the BIS Manakonline portal before expiry, with production details for the period and the fee for the renewal period opted - we manage the full cycle for our clients so nothing lapses.

Once the licence is granted, BIS issues a unique licence number (the CM/L number). The ISI Mark together with that CM/L number must be applied to the product and its packaging in the manner the standard prescribes - it is what lets a buyer, an inspector or a tender authority verify the certificate is genuine. Selling a notified product that carries no mark, or a mark without a valid licence behind it, is treated as non-compliance.

The Bureau of Indian Standards is the certifying and enforcing authority for this product, and non-compliance is dealt with under the BIS Act, 2016:

• Seizure of stock from the factory, warehouse or distribution chain.
• Customs detention of imported consignments that arrive without a valid licence and marking.
• Fines and imprisonment - for a first offence, imprisonment up to two years or a fine of at least two lakh rupees, rising steeply for repeat offences.
• Loss of buyers and tenders - wholesalers, contractors, utilities and government procurement require the ISI Mark as a precondition.

This order spans wiring accessories, life-safety PPE and cable materials - each under its own Indian Standard with its own test regime, and the product list itself changed as recently as January 2026. We track every amendment, work across the entire order as specialists, prepare every document to exact BIS format, and coordinate lab testing and the factory assessment so your file keeps moving - whether your plant is in India or overseas.