Narva 40A Automatic Resetting Circuit Breaker

The Narva 54640BL is an automatically operated electrical device designed to protect your vehicle's electrical circuits from damage caused by overloads or short circuits, and resets automatically once the fault clears.

  • Automatically operated electrical device that protects against overload and short circuit damage
  • Rated at 40 amps, suitable for 6–24V DC electrical systems
  • Fitted with a 90° mounting bracket for a range of mounting configurations
  • Manufactured from durable materials for a strong, vibration-resistant mount
  • Rated operating temperature from -23°C to +65°C
  • Installs easily using standard fasteners
  • Supplied in a blister pack of one
  • 12-month warranty included

A practical circuit protection solution for automotive electrical systems, suited to workshop stock or multi-vehicle installations.

12 Months
SKU 54640BL
Model # 54640BL
Barcode # 9314464546402
Brand Narva
Warranty 12 Months
Manufacturer Part Number 54640BL
Contains Liquid No
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Packaging: Manufacturers periodically update their packaging and labelling. You may receive the current or a previous design — the product, formulation and part number are unchanged.

Fitment (vehicle-specific products): Vehicle fitment is based on manufacturer and supplier catalogue data and is kept as accurate as possible, but vehicle catalogues are not perfect. Some models had more than one part fitted depending on build date, engine, or component size/variant, and parts on older vehicles may have been replaced with non-original or different-style components.

Before you buy, compare the product images with the part currently fitted to your vehicle — check shape, size, connectors and mounting points. If the part on your vehicle looks different, please contact us before purchasing. It is the buyer's responsibility to confirm the part suits their vehicle before purchasing.

Not sure? Message us with your vehicle's registration number and state (preferred), or full VIN/build details, and we'll do our best to confirm fitment before you buy.

Parts returned because they do not suit the vehicle, where the listing matches the manufacturer's catalogue, are treated as a change of mind and must be unused, uninstalled and in original packaging. Nothing in this notice affects your rights under the Australian Consumer Law.

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