FP MCB

FP MCB — Four Pole Protection for Three-Phase Connections With Neutral

If you have a three-phase supply and need to isolate all four conductors — three phases plus the neutral — simultaneously, a Four Pole MCB is the only right choice. That’s not optional in certain installations, it’s a code requirement.

FP MCBs are used at the incomer position of TPN distribution boards, in commercial panels, industrial machinery connections, data centres, hospitals, and any setup where complete isolation of all phases and neutral is critical for safety during maintenance or fault conditions.

We stock FP MCBs from Hager, Siemens, Schneider Electric, Goldmedal, and LnT — 36 products covering current ratings from 6A to 63A, all with 10kA breaking capacity. Type B for resistive loads, Type C for inductive loads like motors and compressors. BIS certified under IS/IEC 60898, HSN Code 8536, made in India.

Panel builders and electrical contractors who specify premium brands on their BOM will find everything here — no compromises, no unbranded alternatives.

Bulk orders for panel builders and project sites are welcome. Competitive wholesale pricing available.

Fast delivery across Mumbai, Delhi, Pune, Bangalore, Hyderabad, Chennai and all of India. Order today.

💬 FAQ Section

Q1. What is an FP MCB and where is it used? An FP MCB (Four Pole Miniature Circuit Breaker) protects all three phases and the neutral simultaneously. It is used as an incomer breaker in TPN distribution boards, three-phase commercial panels, industrial machinery, data centres, hospitals, and any installation where complete four-conductor isolation is required for safety or regulatory compliance.

Q2. What is the difference between TP MCB and FP MCB? A TP MCB (Three Pole) protects three phases only and does not switch or protect the neutral. An FP MCB (Four Pole) protects all three phases plus the neutral — providing complete isolation of the circuit. FP MCBs are used where neutral isolation is required, such as TPN panel incomers, generator changeoverpoints, and sensitive industrial equipment.

Q3. What breaking capacity should I choose for an FP MCB? For commercial buildings and standard industrial installations, 10kA breaking capacity is the recommended minimum. All FP MCBs on Elecload India are 10kA rated. For installations very close to transformers or with high fault current levels, consult your electrical consultant for the appropriate breaking capacity.

Q4. What is the difference between Type B and Type C FP MCB? Type B FP MCBs trip at 3–5 times the rated current, suitable for resistive loads like lighting and heating circuits. Type C trips at 5–10 times rated current, designed for inductive loads like motors, compressors, and transformers where high inrush currents occur during startup. Using the wrong curve leads to nuisance tripping or inadequate protection.

Q5. Which brands of FP MCB are available on Elecload India? Elecload India stocks FP MCBs from Hager, Siemens, Schneider Electric, Goldmedal, and LnT — all BIS certified, ISI marked under IS/IEC 60898, and made in India. These are the most trusted brands among panel builders, electrical contractors, and consulting engineers across India.

Q6. What ampere rating FP MCB do I need for a TPN distribution board incomer? The incomer FP MCB rating depends on your sanctioned load and the main supply capacity. For a typical small commercial establishment with a 3-phase 15kW load, a 32A or 40A FP MCB is commonly used. For larger commercial spaces, 63A is standard. Always size the incomer based on your total connected load and diversity factor — consult a licensed electrical contractor for accurate sizing.

Q7. Can I use an FP MCB instead of a TP MCB? Yes, technically an FP MCB can be used where a TP MCB is specified, as it provides additional neutral protection. However, FP MCBs are more expensive and require a 4-pole slot in the distribution board. Use FP where neutral isolation is specifically required — for everything else, a TP MCB is sufficient and more cost-effective.