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Spyder Robotics

Herpstat 6 Replacement Main Fuse – 15 Amp (3-pack)

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Spare main fuses for the Herpstat 6. The main fuse protects the whole unit's power circuit, and if it blows the thermostat goes dark, so a correct spare on the shelf saves a long wait. Three 15 amp, fast-acting, 6.3 x 32 mm fuses, not for the 3.15 amp output holders.

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  • 14 day returns on stock items, one year warranty on our builds.

Part number Fuses6-Ceramic

Description

On this page
  1. Which fuse it replaces
  2. Replacing a fuse
  3. Questions
  • 15 A
  • Fast-acting
  • 6.3 x 32 mm
  • 3-pack
  • Herpstat 6 main

The main fuse sits on the Herpstat 6's main power circuit. If too much current flows, it breaks the circuit and the thermostat stops getting power until the problem is fixed and the fuse replaced. Running six outputs from one unit makes it worth keeping spares.

At a glance

Rating
15 A
Type
Fast-acting
Size
6.3 x 32 mm
Quantity
3
Fits
Herpstat 6, main fuse
Not for
Herpstat 6 output fuses (3.15 A)

Which fuse it replaces

The Herpstat 6 has a main fuse for the whole unit and a smaller fuse for each output. These are the main fuses: larger, and rated far higher. Never put one in an output holder.

Thermostat

Fuse

Spares

Herpstat Intro V2 and Intro+ V2

3.15 A, 5 x 20 mm

Intro V2 fuses

Herpstat 1 Basic, 1, 1 Redline, and 1 SpyderWeb

6.3 A, 5 x 20 mm

Herpstat 1 fuses

Herpstat 2, 2 Redline, and 2 SpyderWeb

8.0 A, 5 x 20 mm

Herpstat 2 fuses

Herpstat 4 V2 and 4 SpyderWeb, each output

3.5 A, 5 x 20 mm

Herpstat 4 fuses

Herpstat 6, each output

3.15 A, 5 x 20 mm

Herpstat 6 output fuses

Herpstat 6, main fuse

15 A, 6.3 x 32 mm

This pack

Herpstat EZ1

4.0 A, 5 x 20 mm

EZ1 fuses

Herpstat EZ2

6.3 A, 5 x 20 mm

EZ2 fuses

Replacing a fuse

  1. Unplug the Herpstat 6 and disconnect every heater, probe, and cable.

  2. Open the housing following the Spyder Robotics manual for your model; the main fuse is inside.

  3. Check the new fuse is 15 A, fast-acting, 6.3 x 32 mm, then fit it in the main fuse holder.

  4. Check the connected heaters for damaged cords, shorts, or a total load over the unit's limit.

  5. Reassemble, plug it back in, and confirm the thermostat and its outputs work before you rely on it.

Find the cause first
A blown fuse usually means an overload, a short, or a power surge. Unplug everything before you replace it, never fit a higher-rated or slow-blow fuse or bypass the holder, and if the new fuse blows too, stop using the unit until the fault is found.

Useful with it

Questions

Main fuse or output fuse: which has blown?

If the whole unit is dead, suspect the main fuse. If the unit works but one outlet gives no power, it is more likely that output's 3.15 A fuse.

Why would the main fuse blow?

An overload, a short circuit, or a power surge. Find and fix the cause before fitting a new one.

Can I use a slow-blow fuse?

No. Use a 15 A fast-acting 6.3 x 32 mm fuse.

Part numberFuses6-Ceramic
BrandSpyder Robotics
Shipping weight0.2 lb
Shipping box1 x 1 x 1 in

Box size and weight are the packed carton, for shipping only, not the size of the item itself.

Shipping

Parcels across Canada and the US are priced at checkout from the packed boxes. Pallets and freight we price by hand, usually within one business day, and you pay nothing until you have seen the total. Pickup in Calgary is free.

Returns

14 day returns on eligible unused stock items, return shipping paid by the customer. Built-to-order goods are covered by the construction warranty rather than by returns. Restocking Fees Apply for returns

Warranty

One year warranty on the construction of anything we build.

Questions

Ask about it

Anything this page does not answer. We will get back to you as soon as we can, and good answers go up here for the next person.

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