Polycab 6kA B-Curve SP MCB – Single Pole Miniature Circuit Breaker, 6 A to 32 A, IS/IEC 60898-1

The Polycab 6kA B-Curve SP MCB is a single pole (1 pole) miniature circuit breaker with a B tripping curve and 6 kA breaking capacity, made to IS/IEC 60898-1 for 240/415 V AC, 50 Hz. Polycab lists it in 6 ratings - 6, 10, 16, 20, 25 and 32 A - at MRP Rs 210 per piece (polycab.com, October 2026).

Polycab India Limited is India's largest manufacturer of wires and cables, with 27 manufacturing facilities, 4,300+ authorised distributors, 2,00,000+ retailers and an export presence in 84 countries (polycab.com, October 2026). Its switchgear range covers MCBs, RCCBs, RCBOs, isolators, changeover switches, ACCLs and distribution boards. Jai Enterprises supplies Polycab MCBs from Bhilai and Raipur all over Chhattisgarh - Bhilai, Raipur, Durg, Korba, Bilaspur, Raigarh, Jagdalpur, Kanker, Ambikapur and every other district - and across India.

Is this the right one for you?

Check these five things before you order:

• You are protecting one single-phase circuit from the distribution board (single pole).
• Your load suits a B curve: lighting, heating and resistive loads.
• The prospective short-circuit current where the MCB is fitted does not exceed 6 kA.
• The rating you need is 6, 10, 16, 20, 25 or 32 A - the rating must suit the cable it protects.
• The installation does not call for a 10 kA breaker - for higher fault levels use the 10 kA range.

At a glance

• MRP: Rs 210 per piece (polycab.com, October 2026, inclusive of taxes)
• Product: Polycab 6kA B-Curve SP MCB
• Type: single pole MCB, B curve, 6 kA
• Poles: SP - single pole (1 pole)
• Tripping curve: B
• Breaking capacity: 6 kA
• Ratings: 6, 10, 16, 20, 25 and 32 A
• Item codes: GMM501P001 to GMM501P006
• Standard: IS/IEC 60898-1
• Rated voltage: 240/415 V AC, 50 Hz

Ratings, item codes and MRP

• 6 A: item code GMM501P001 - MRP Rs 210
• 10 A: item code GMM501P002 - MRP Rs 210
• 16 A: item code GMM501P003 - MRP Rs 210
• 20 A: item code GMM501P004 - MRP Rs 210
• 25 A: item code GMM501P005 - MRP Rs 210
• 32 A: item code GMM501P006 - MRP Rs 210
• MRP basis: MRPs as listed on polycab.com, October 2026, inclusive of taxes; the selling price is confirmed on enquiry

Why choose the Polycab 6kA B-Curve SP MCB

• Finger-proof IP20 terminals
• Air-flow channels to keep the breaker cool
• 13-plate arc chute for quick arc quenching
• Line-load reversibility - it can be fed from the top or the bottom
• Energy limiting class 3 and low power loss, as Polycab's catalogue lists for the 6 kA range
• Polycab item code and MRP for every rating, so the order matches the drawing - GMM501P001 to GMM501P006

How to choose and fit it

Tripping curve. Under IS/IEC 60898-1, a B-curve MCB trips instantly at 3 to 5 times its rated current, a C-curve at 5 to 10 times and a D-curve at 10 to 20 times. This B-curve breaker trips instantly at 3 to 5 times its rating, which suits resistive and lightly inductive loads with little switch-on surge - lighting, heaters, geysers and general socket circuits, and long cable runs where the fault current is low.

Poles. A single pole MCB is used for a single-phase final circuit - it protects the phase conductor of one circuit leaving the distribution board. In the 6 kA B-curve range Polycab lists SP.

Breaking capacity. 6 kA is the largest short-circuit current the breaker can safely interrupt. Choose a breaking capacity at least equal to the prospective fault current where it is fitted - your electrician or consultant checks this at the board.

Rating. The MCB rating must be above the normal current of the load and must not exceed the current-carrying capacity of the cable it protects. As a rough guide in homes: 6 A or 10 A for lighting circuits and 16 A to 25 A for geyser, heater and other resistive-load circuits; the cable size and the load decide the final choice.

Mounting. It clips on a standard DIN rail inside a distribution board or MCB enclosure.

Where it is used

• lighting and heating final circuits in homes, flats, offices and shops
• geysers, heaters and other resistive loads
• long cable runs where the fault current is low
• outgoing ways of SPN and TPN distribution boards
• homes, flats and small shops

Other Polycab 6 kA MCBs

• Polycab 6kA B-Curve SP MCB (this page) - 6 A to 32 A, MRP Rs 210
• Polycab 6kA C-Curve SP MCB - 6 A to 32 A, MRP Rs 210
• Polycab 6kA C-Curve SPN MCB - 6 A to 32 A, MRP Rs 715
• Polycab 6kA C-Curve DP MCB - 6 A to 32 A, MRP Rs 760
• Polycab 6kA C-Curve TP MCB - 6 A to 32 A, MRP Rs 1,250
• Polycab 6kA C-Curve FP MCB - 32 A to 63 A, MRP Rs 1,650 - 2,400

Related products

• Polycab 10kA B-Curve SP MCB - the same pole and curve in the 10 kA range
• Polycab 6kA C-Curve SP MCB - the same pole type and breaking capacity with the C curve
• Polycab DP RCCB 30 mA - adds earth-leakage protection, which an MCB does not give
• Polycab SPN double-door distribution board - to house the MCBs
• All Polycab switchgear

Frequently asked questions

What does "B curve" mean on an MCB?

It describes how quickly the breaker trips on a surge. Under IS/IEC 60898-1 a B-curve MCB trips instantly at 3 to 5 times its rated current, which suits lighting, heating and resistive loads. B trips at 3 to 5 times, C at 5 to 10 times and D at 10 to 20 times the rating.

Which pole type do I need?

SP protects one single-phase circuit; SPN switches the neutral together with the phase; DP switches and protects phase and neutral of a single-phase supply; TP is for three-phase loads without neutral; TPN switches the neutral together with the three phases; FP switches all four poles of a three-phase supply with neutral and is the usual incomer of a TPN distribution board. This page is the single pole (SP) version; in the 6 kA B-curve range Polycab lists SP.

Should I choose a 10 kA or a 6 kA MCB?

Choose a breaking capacity at least equal to the prospective short-circuit current at the board. 6 kA is common in homes; 10 kA is the safer choice for commercial buildings, boards close to the transformer and industrial supplies. Polycab makes the SP B-curve MCB in both.

Do I still need an RCCB with an MCB?

Yes, for protection against electric shock and earth-leakage fires. An MCB protects against overload and short circuit only; an RCCB (or an RCBO, which combines both) detects current leaking to earth.

What is the MRP of the Polycab 32 A 6kA B-curve SP MCB?

Rs 210 per piece, item code GMM501P006 - the MRP listed on polycab.com in October 2026, inclusive of taxes. Call +91 9340081159 for the selling price and stock.

Where can I buy the Polycab 6kA B-Curve SP MCB in Chhattisgarh?

From Jai Enterprises, Bhilai and Raipur, which supplies Polycab switchgear all over Chhattisgarh - Korba, Bilaspur, Raigarh, Jagdalpur, Kanker, Ambikapur and every other district - and across India. Call +91 9340081159 with the rating, quantity and delivery location and we will confirm the price, stock and lead time.

How to order

Supplied by Jai Enterprises, Bhilai and Raipur, to every district of Chhattisgarh and across India. Polycab lists the 6kA B-Curve SP MCB at MRP Rs 210 per piece (polycab.com, October 2026, inclusive of taxes). Call +91 9340081159 or send an enquiry from this page with the rating, the quantity (pieces) and the delivery location, and we will confirm the selling price, stock and lead time.