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The Major Tech VB04 is a 4mm insulated hex key rated for live electrical work up to 1000V AC and 1500V DC. The VB04 is individually tested to 10,000V and conforms to EN 60900, the safety standard for insulated hand tools. Made from chrome vanadium steel with a 90-degree head and 140mm length, it drives 4mm hex fasteners on energised equipment.
Adjusting grub screws and hex fasteners inside a live switchboard leaves little room for a bare tool near exposed busbars and terminals. A standard hex key offers no protection if it slips against an energised part. The Major Tech VB04 carries a 1000V AC and 1500V DC rating and a fully insulated shaft, so it can be used on live conductors without isolating the circuit. Its 10,000V test voltage gives a wide safety margin over the working rating.
Licensed electricians choose insulated hex keys that meet a recognised standard so their live-work procedures hold up to audit. The VB04 is individually tested to 10,000V and marked to EN 60900, which supports safe-work method statements for energised tasks. The chrome vanadium steel shaft holds its shape under torque, and the bevelled tip seats cleanly in the fastener for control on fine adjustments. The VB04 drives the 4mm hex fasteners common on terminal grub screws and equipment fixings during energised work.
The Major Tech VB04 is not rated above 1000V AC or 1500V DC and must not be used on circuits beyond these limits. Do not use the key if the insulation is cut, cracked, or worn, as damaged insulation removes its live-work protection. The VB04 is a 4mm size only and will not fit larger or smaller hex fasteners.
(VB04)
The VB04 is insulated for use on live conductors up to 1000V AC and 1500V DC. It conforms to EN 60900, the standard for insulated hand tools, and every key is individually tested to 10,000V before dispatch.
A standard hex key has bare metal and offers no protection near live parts. The VB04 has a full insulating layer over the shaft and a chrome vanadium core, rated to 1000V AC and 1500V DC. This lets a licensed electrician work on energised equipment without isolating the circuit.
The Major Tech VB04 has a 4mm hexagon tip and drives 4mm hex socket screws, grub screws, and set screws. It suits the small hex fixings found on terminals, links, isolators, and equipment fittings. Match the key size to the fastener, as a 4mm key will not fit other sizes.
Insulated tools like the VB04 are intended for licensed electricians trained in live-work procedures. The tool provides insulation to 1000V AC and 1500V DC, but safe use depends on correct method and undamaged insulation. Anyone unsure how to work safely on energised equipment should not attempt it.
The insulated hex key is made from chrome vanadium steel, a hard alloy that holds torque and resists wear on the hex faces. The steel core is covered by an insulating layer that carries the 1000V AC and 1500V DC rating. Chrome vanadium keeps the tip accurate through repeated use.
The insulated hex key carries a 2-year warranty for both domestic and commercial use, starting from the invoice date. Warranty claims are handled by return to Sparky Direct. The warranty covers manufacturing defects, not wear from misuse or damage to the insulation.
This hex key is supplied as a single 4mm key, not a set. Major Tech makes the VB insulated hex key in sizes from 3mm to 10mm, so other sizes are available separately if the job needs them. Order the size that matches each fastener.
The insulated hex key must not be used on circuits above 1000V AC or 1500V DC. Stop using the key if the insulation is cut, cracked, or worn, because damaged insulation removes its live-work protection. The 4mm key should not be forced into a different fastener size.
The Major Tech VB04 is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.
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Warranty starts from Invoice Date
Domestic Use: 2 Year
Commercial Use: 2 Year
Warranty Method: Return to Sparky Direct
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | Major Tech |
| SKU | VB04 |
| Model # | VB04 |
| Package Weight | 0.050kg |
| TYPE | VALUE |
|---|---|
| Type | Tools |
| Brand | Major Tech |
| Length (mm) | 140mm |
| Material | Chrome Vanadium Steel |
| Tip | Standard |
| Rated Voltage | 1000V AC 1500V DC |
| Head Size (mm) | 4mm |
| Head Angle | 90° |
Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.
Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.
Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.
Nothing in this clause limits or excludes any rights or guarantees available under the Australian Consumer Law.
For website terms and conditions https://www.sparkydirect.com.au/terms-of-use
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