What are the opening hours?

Monday 7am - 4:30pm Tuesday 7am - 4:30pm Wednesday 7am - 4:30pm Thursday 7am - 4:30pm Friday 7am - 4:30pm Saturday 8am - 11am

Alstra Electrical Wholesalers Thornton

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Australia
Thornton, NSW
Alstra Electrical Wholesalers Thornton

Electrical Wholesaler We sell anything that is related to the Electrical industry.

From powerpoints and switches to ceiling fans and lighting and everything else in between! We carry a decent stock of a host of products pop into our showroom and have a look around. If something you're after isn't in stock then we will gladly order it in for you!

20/06/2026

✨ Before and after. One real Thermonet install.

Mat goes down wire side first, mesh keeps the spacing even, then it's tiled over and gone from sight. Until you stand on it on a cold morning.

10% off the whole underfloor heating range this June. Order online at alstra.com.au or call 02 4966 8100.

17/06/2026

🔥 10% off underfloor heating at Alstra, all June.

Thermonet by Thermogroup. Lifetime warranty on the mat, straightforward install, and a comfort upgrade clients notice every morning. Kits from $144 up to $1,885.

Order online at alstra.com.au or call 02 4966 8100.

16/06/2026

⚠️ Electric shock risk on isolated power systems is real. Here's a product that addresses it properly.

The Powersafe PS04-ESD Earth Sensing Device is now in stock at Alstra Electrical Wholesalers. It's designed for exactly the situations where standard earth fault protection isn't enough.

On isolated systems like inverter generators, portable power setups and IT isolated power, conventional RCDs can fail to provide adequate protection because there's no low impedance earth return path. The PS04-ESD works differently. It monitors voltage potential between the system cabling and the sensor and trips when that potential exceeds 36V AC or DC, automatically disconnecting supply to protect people downstream.

Suitable for worksites, events, maintenance applications, temporary power distribution, UPS systems and any isolated supply environment where reducing electric shock risk is critical.

$335.00 inc. GST with free shipping. A small price for the protection it provides.

Order online at alstra.com.au or call 02 4966 8100. Trade and public welcome in store at 3/2 Huntingdale Drive, Thornton.

15/06/2026

🏗️ NEW IN at Alstra: Powersafe PS04-ESD Earth Sensing Device

Who is this product for? If any of these sound familiar, it's worth a look.

You're running temporary power on a worksite and need earth fault protection that works on a floating system. You're using an inverter generator and want to reduce electric shock risk for people working downstream. You're managing power distribution at an event or outdoor setup. You're dealing with a UPS, inverter or IT isolated power system and standard RCDs aren't the right solution.

The PS04-ESD is a standalone device that installs between the power supply and the load, after an RCBO or MCB. It monitors voltage potential rather than fault current, trips at 36V AC or DC and can still isolate downstream fault paths even when a fault occurs upstream. DIN rail mount, compact and built for real conditions with an operating temperature range of -30 to +60 degrees C.

$335.00 inc. GST with free shipping.

Questions about whether this suits your application? Give our team a call on 02 4966 8100. We're happy to talk it through. Trade and public welcome in store at 3/2 Huntingdale Drive, Thornton.

12/06/2026

🔌 NEW IN at Alstra: Powersafe PS04-ESD Earth Sensing Device

We're genuinely excited to stock this one. The PS04-ESD fills a real gap for anyone working with isolated power systems where conventional earth fault protection isn't adequate.

Designed for inverter generators, UPS systems, IT isolated power and temporary power distribution, it monitors voltage potential rather than fault current and trips automatically when the earth frame potential rises above 36V. That means electric shock protection that actually works for the setup you're running.

Key specs worth knowing:
Trips at 36V AC or DC
Power supply 83 to 264V AC or 120 to 430V DC
16A switching side at 250V AC
DIN rail mount, 2 modules wide
Dimensions 36 x 58 x 90mm approx
Operating temp -30 to +60 degrees C
Class II isolation, 1 year warranty

One important note: the direct wired current rating is 16A. If your application requires 20A or above, you'll need a contactor included in the wiring circuit.

$335.00 inc. GST with free shipping.

Order at alstra.com.au or call 02 4966 8100. Trade and public welcome in store at 3/2 Huntingdale Drive, Thornton.

11/06/2026

⚡ If you're running a generator on site, this is worth reading.

Standard RCDs work by detecting fault current returning through the earth conductor. On an isolated power system like an inverter generator, that return path doesn't exist in the same way. The result is that conventional earth fault protection can fail to trip when you need it most.

The Powersafe PS04-ESD Earth Sensing Device is designed specifically for this situation. Instead of measuring fault current, it monitors voltage potential between the connected system cabling and the sensor. When that potential rises above 36V AC or DC, it trips automatically and disconnects supply to downstream equipment.

It's a standalone device installed between the power supply and the load, after an RCBO or MCB. DIN rail mount, compact, and it can still trip to isolate downstream fault paths even when a fault occurs upstream.

$335.00 inc. GST with free shipping included.

Order online at alstra.com.au or call our team on 02 4966 8100. Trade and public welcome in store at 3/2 Huntingdale Drive, Thornton.

10/06/2026

🔧 NEW IN at Alstra: Klein Tools KNECT Essential Pass Through Impact Socket Set 28 Piece

If you're still hunting through a loose pile of sockets on the job, this set will sort that out.

28 pieces covering SAE and metric sizes, with Klein's KNECT system for fast tool-free bit changes. Pass through design, extension bars and accessories included. Built for impact driver and drill use so it handles real conditions without wearing out.

Klein Tools has been making professional grade hand tools since 1857. This is quality you can feel the moment you pick it up.

$165.00 inc. GST. Free shipping on orders over $250.

Order online at alstra.com.au or call 02 4966 8100. Trade and public welcome in store at 3/2 Huntingdale Drive, Thornton.

08/06/2026

🔩 NEW IN at Alstra: Klein Tools Slim Profile Magnetic Mini Ratchet

Every sparky knows the frustration of a tight space where a standard ratchet just won't go. The Klein Tools Slim Profile Magnetic Mini Ratchet is designed exactly for those moments.

Slim enough to fit where it needs to, with a magnetic head that holds fasteners securely so you're not fishing around in a cavity. 72 tooth gear gives you a tight arc of movement and 1/4 inch drive keeps it versatile. Built to the professional grade standard Klein Tools has maintained since 1857.

$36.45 inc. GST. Free shipping on orders over $250.

Order online at alstra.com.au or call 02 4966 8100. Trade and public welcome in store at 3/2 Huntingdale Drive, Thornton.

06/06/2026

🔩 NEW IN at Alstra: Klein Quad-4 Heavy Duty Impact Flip Socket SAE

Sometimes you just need the four sizes you actually use, in something compact enough to live in the bag permanently.

The Klein Quad-4 Heavy Duty Impact Flip Socket SAE is exactly that. Four of the most commonly reached for SAE sizes in one flip body, impact rated and tough enough for daily trade use. No case to lose, no loose sockets rolling around in the tray.

At $42.95 inc. GST it's an easy addition to any kit.

Free shipping on orders over $250. Order online at alstra.com.au or call 02 4966 8100. Trade and public welcome in store at 3/2 Huntingdale Drive, Thornton.

Address

3/2 Huntingdale Drive
Thornton, NSW
2322

Opening Hours

Monday	7am - 4:30pm
Tuesday	7am - 4:30pm
Wednesday	7am - 4:30pm
Thursday	7am - 4:30pm
Friday	7am - 4:30pm
Saturday	8am - 11am

Website

https://www.alstra.com.au/

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