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The Major Tech KV-5RRS is a five piece set of insulated ratcheting ring wrenches rated for use on live conductors up to 1000V AC. Each wrench carries a 72 tooth ratchet mechanism in the ring end and is made from chrome vanadium steel beneath the insulation. The KV-5RRS conforms to IEC 60900, has been individually tested to 10,000V, and covers metric sizes 10, 12, 13, 14, and 17mm.
Accessibility determines which tool functions in a populated board. A socket requires unobstructed approach along the axis of the fastener, while a plain spanner requires room to swing through a wide arc before requiring repositioning. Neither is available beside a busbar or behind a row of breakers. A 72 tooth ratchet in the ring end advances the nut on a very short movement, so the wrench stays on the fastener between strokes.
Remaining engaged on the fastener matters for more than speed. Every reposition represents another opportunity to drop a spanner into an energised board. A ring end gripping all six flats is also considerably less likely to slip or round a fastener under load than an open jaw. The five sizes from 10 to 17mm cover fixings recurring throughout switchboard and panel installations.
Ring wrenches must pass over the end of the fastener, so they will not fit a nut partway along a threaded rod or one obstructed above. The set covers 10 to 17mm only and does not include 19mm. Insulated tools also provide protection where work on or near energised conductors is properly authorised: they do not authorise live work and are not a substitute for isolation. Insulation that is cut, cracked, or heat damaged no longer provides the rated protection, so a damaged wrench belongs out of service.
(KV-5RRS)
More teeth means a finer ratchet action, so the wrench advances the fastener on a shorter swing. That matters in a board where there is not enough room to move a plain spanner through a full arc before repositioning it.
Five metric sizes: 10, 12, 13, 14, and 17mm. The set does not extend to 19mm, so larger fixings need a different tool such as an insulated socket set.
A socket needs clear approach along the axis of the fastener and a ratchet handle behind it. These ring wrenches work where that approach is blocked, since the head is thin and the handle runs at right angles to the fastener.
No. The tools reduce risk where work on or near energised conductors has already been authorised. Live electrical work in Australia is governed by work health and safety requirements and a documented risk assessment. Isolation remains the primary control.
The working rating is 1000V AC, which is the voltage the insulation is designed to withstand in service. Each wrench is separately tested at 10,000V during manufacture, giving a substantial margin over the working rating.
A ring end surrounds the fastener and grips all six flats, while an open jaw bears on two. Under load the ring is less likely to slip or round the corners, which matters on fixings that are tight or already worn.
Take it out of service. Insulation that is cut, cracked, or heat damaged no longer provides the rated protection, and the wrench should not be used on or near energised conductors regardless of how minor the damage appears.
The Major Tech KV-5RRS 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 | KV-5RRS |
| Model # | KV-5RRS |
| TYPE | VALUE |
|---|---|
| Type | Ring Gear Wrenches |
| Brand | Major Tech |
| Colour | Red, Yellow |
| Voltage (V) | 1000 |
| Includes | VRRS10, VRRS12, VRRS13, VRRS14, VRRS17 |
| Insulated | Yes |
| Number of Wrenches | 5 |
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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