Excel porcelain kit kat fuse unit, 415V, 32A and 63A — rewireable carrier and base for motor, pump and sub-circuit protection, one unit per phase.
- Porcelain kit kat fuse unit, Excel pattern — base and pull-out carrier.
- Two sizes for 415 V circuits: 32A and 63A.
- Rewireable: fuse wire fits between the carrier contacts and melts on overload or short circuit.
- Rating and voltage embossed on the carrier (for example 32A, 415V).
- Screw terminals in the base for the incoming and outgoing wires.
- Porcelain (ceramic) base and carrier — non-combustible and heat-resistant, the traditional material for fuse units.
- Single pole — use one unit in each phase, three for a three-phase supply.
A porcelain kit kat fuse unit has two parts: a base, fixed on the board and wired into the circuit, and a carrier that holds the fuse wire and plugs into the base. On an overload or short circuit the wire melts and breaks the supply; you switch off, pull out the carrier, refit wire of the correct size and push it back.
The Excel pattern comes in 32A and 63A for 415 V circuits — three-phase motors, pumps, machines and sub-circuits, or the phase of a single-phase circuit. The rating is the unit maximum: the fuse wire fitted sets the actual protection and must suit the cable and the load.
Which size do I need
- 32A — smaller three-phase motors and pumps, and sub-circuits.
- 63A — larger motors, machines and sub-distribution feeders.
Typical uses only — the rating must suit the cable and the load, and the fuse wire fitted must never exceed the unit rating.
Where to use it
- Three-phase motors, pumps and machines in workshops, factories and farms.
- Sub-circuits and small feeders in shops and commercial buildings.
- Replacing worn or cracked Excel units on existing boards.
How to install
- Switch off and isolate the supply, and confirm the circuit is dead.
- Fix the base on the board and connect the incoming and outgoing wires to its terminals.
- Fit fuse wire of the correct size in the carrier and tighten the screws.
- Push the carrier fully into the base; fit one unit in each phase.
Electrical work should be done by a licensed electrician. Never pull out or push in a fuse carrier on load — switch off the supply first.
Frequently asked questions
- Excel or handle type — what is the difference?
- Both are porcelain rewireable fuse units for 415 V, made in different patterns of carrier and base; the handle type carrier has a moulded pull handle. A carrier generally fits only its own pattern and size of base, so match what is on your board or replace both parts.
- How many units do I need for a three-phase supply?
- Three — one in each phase. Each unit is single pole; the neutral goes through a link, never a fuse.
- What fuse wire should I use?
- Wire sized for the protection the circuit needs — never above the unit rating or what the cable can carry; thinner wire blows at a lower current. The 32A carrier pictured is marked MAX WITH 21 SWG. Never fit thicker wire or copper strands.
- Can I pull out the carrier with the supply on?
- No. Switch off the main switch or upstream isolator first — pulling a carrier on load can draw an arc that burns the contacts and the hand holding it.
- Kit kat fuse or MCB — which should I choose?
- An MCB trips more precisely and resets with a switch — the modern choice for distribution boards. A rewireable fuse is simple and economical and still common in motor, pump and older main-switch boards, but it protects only with the correct fuse wire.
Buy Excel porcelain kit kat fuse units online from Electric Market, Chennai. For panel builders, contractors and bulk orders, contact us for a quote.