MCB
Trips on overload and short circuit.
- Protects cables
- One per circuit
- Prevents overheating
Havells · L&T · Amici Smart · Protection and distribution
Electrical protection and distribution-panel systems
Coordinate load calculation, circuit separation, protective devices, surge protection, enclosure, labelling and earthing for safer, maintainable power distribution.
How electrical protection works
Safe power for people and equipment
The board splits power into labelled circuits, and each device trips before a fault can hurt someone or damage equipment.
- 1. Study the loadConnected load, circuits and future additions are listed.
- 2. Design the boardMain switch, RCCB, MCBs and surge protection selected.
- 3. Install and labelNeat wiring with every circuit clearly labelled.
- 4. Test and hand overInsulation, earth and trip tests recorded.
Know the devices
MCB, RCCB or surge protector?
A safe board needs all three working together.
RCCB / RCBO
Trips on earth leakage in milliseconds.
- Protects people
- Detects faulty appliances
- Needed for wet areas
SPD
Diverts lightning and switching surges.
- Protects electronics
- IT, CCTV, inverters
- Works with good earthing
Planning backup power too? See UPS & battery backup.
System planning
Protection must be coordinated with the circuit
A device rating cannot be selected in isolation. Cable capacity, fault level, load type, earthing arrangement, discrimination and local requirements all matter.
Homes and renovations
Circuit separation, residual-current protection and clear distribution-board schedules.
Commercial distribution
Floor, department and essential-load panels designed for maintainability and expansion.
Sensitive equipment protection
Layered surge and power-quality considerations for networking, CCTV, automation and electronics.
Verified selection points
What Zerolink confirms before quotation
Exact specifications depend on the selected product, capacity and system architecture.
Load calculationConnected, diversified and future loads are assessed before feeder and protective-device sizing.
Circuit and cable coordinationConductor size, installation method, voltage drop and protective rating are checked together.
Shock and leakage protectionRequired residual-current protection and circuit grouping are selected for the application.
Surge protectionSupply exposure, earthing and downstream equipment inform the suitable protection architecture.
Panel constructionEnclosure, busbar, segregation, ventilation, termination space and expansion allowance are specified.
Testing and documentationContinuity, insulation, polarity, protective operation, labelling and panel schedules are recorded.
Official product reference: Havells electrical and switchgear portfolio. Exact products, specifications, licensing, capacity and warranty are confirmed in the final quotation.
Related Zerolink expertise
Connect this system with the wider solution
Product selection works best when connectivity, infrastructure, security and deployment responsibilities are considered together.
Business infrastructure
Review integrated network, security, communication and deployment capabilities.
Wiring & earthing
Protection only works with correct wiring and a tested earth.
Requirement discovery
Share the site, workflow, capacity and support requirements before quotation.
Frequently asked questions
Questions about Protection & Distribution
Clear answers to common planning and selection questions.
What is the difference between MCB, RCCB and SPD?
An MCB trips on overload or short circuit, an RCCB trips on earth leakage to protect people, and an SPD diverts voltage surges away from equipment.
Why does my RCCB keep tripping?
Usually an earth-leakage fault in a circuit or appliance, or moisture. A load and insulation check finds the cause before it is reset.
Can you upgrade an old distribution board?
Yes. Zerolink surveys the existing wiring and load, then plans a safer, labelled board with the right protection devices.
Need a safer, maintainable distribution system?
Arrange a survey with existing panel photographs, connected-load details and known power problems.
Request Recommendation