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By purchasing, you accept responsibility for ensuring the compatibility and suitability of the product and any associated parts. Confirm correct selection with your licensed installer prior to purchase.
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Learn more by watching our NLS 30570 | Solid Screwed Reducer 50-40mm video.
The NLS 30570 is a solid screwed conduit reducer that joins 50mm threaded conduit to 40mm threaded conduit. One end carries a 50mm external thread and the other carries a 40mm internal thread, so the fitting steps a run down a size in a single piece. The 30570 is rated for operative temperatures from -15 to 65 degrees Celsius.
Conduit runs rarely maintain a single diameter from the switchboard through to the final point. A 50mm run leaving a board frequently reduces to 40mm where branches split off, or where the conduit enters a smaller enclosure. Improvising that transition on site costs install time and leaves an opening for dust and moisture. The 30570 delivers a solid threaded step from 50mm to 40mm in one moulded fitting, so the connection remains fully enclosed and the run retains continuous mechanical protection.
Screwed fittings suit runs that need dismantling later, and specifications calling for threaded conduit throughout. The 30570 threads directly onto the conduit, so there is no solvent cement curing time and no delay before the following section proceeds. A handful in the vehicle covers most 50mm to 40mm transitions without a second trip to the wholesaler. Stock rotation remains straightforward because the reducer suits any threaded 50mm and 40mm conduit on the same run.
The NLS 30570 is not rated above 65 degrees Celsius, so keep it clear of flues, heaters, and industrial heat sources. It joins threaded conduit only and does not engage plain (unthreaded) conduit. The 30570 is a solid fitting with no inspection opening, so it gives no draw point for pulling cable at that position.
(30570)
The NLS 30570 reduces 50mm threaded conduit down to 40mm. The larger end carries a 50mm external thread and the smaller end carries a 40mm internal thread, so one fitting completes the size change with no separate coupling in between.
Screwed conduit fittings join by thread rather than by solvent cement, so the 30570 threads directly onto the conduit or fitting. That keeps the joint serviceable, because the run can be unscrewed and opened again later if circuits or cable routes change.
A solid reducer has a closed body with no access cover. An inspection pattern reducer includes an opening that lets an electrician draw cable at that point in the run. The solid version keeps the run sealed against dust and moisture where no draw point is needed.
The operative temperature range is -15 to 65 degrees Celsius, which covers roof spaces, wall cavities, underground runs, and exposed external runs in Australian conditions. Positions beside flues, boilers, or industrial heat sources can exceed 65 degrees and sit outside that rating.
The 30570 is a screwed fitting, so both ends are threaded and plain (unthreaded) conduit will not engage them. Runs in plain conduit need a plain-to-screw fitting to convert the end to a thread before the reducer goes on.
Warranty cover runs for one year domestic use and one year commercial use, starting from the invoice date. Claims are handled by return to Sparky Direct. Warranty cover is void where the product has not been installed by a licensed electrician.
The NLS 30570 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.
100-Day Fuss-Free Returns
We want you to love what you buy—but if you change your mind, that’s okay too. That’s why Sparky Direct offers a 100-day money-back guarantee.
If your item isn’t in its original condition, please contact us before returning it—we might save you time and money.
All products come with a manufacturer’s or supplier’s warranty
Damaged or Faulty Goods
If your order arrives damaged or is faulty, let us know within 24 hours.
Contact us via our chat to arrange the return.
Exclusions
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How to Request a Return
Warranty starts from Invoice Date
Domestic Use: 1 Year
Commercial Use: 1 Year
Warranty Method: Return to Sparky Direct
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | NATIONAL LIGHT SOURCES |
| SKU | 30570 |
| Model # | 30570NLS |
| Barcode # | 9336700011758 |
| Package Weight | 0.030kg |
| TYPE | VALUE |
|---|---|
| Type | Solid Screwed Reducer |
| Conduit Internal Thread (mm) | 40 |
| Conduit External Thread (mm) | 50 |
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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