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Learn more by watching our NLS 30795 | 20 amp 4.5KA Single Pole RCBO * NEW A TYPE * video.
The NLS 30795 is a 20A RCBO rated 240V with 4.5kA breaking capacity. It combines an RCD (residual current device) and MCB (circuit breaker) in one unit. This saves space on switchboards and cuts installation time by removing the need for two separate devices.
Domestic circuits need two kinds of protection: overload protection (the MCB part) and earth-leakage protection (the RCD part). The 30795 does both jobs in one device. At 4.5kA breaking capacity, it suits standard domestic circuits. The 30mA earth-leakage sensitivity trips quickly on dangerous faults. Type A classification detects both AC and pulsating DC earth faults, which are common with modern electronics. Non-polarised design lets you connect supply from the top or bottom of the board.
Electricians choose the NLS 30795 for jobs where space is tight or budgets are tight. On upgrade and renovation work, fitting one RCBO is simpler than fitting separate RCD and MCB units. The 4000 cycle endurance rating means the unit handles years of normal use without wear. The 3-year replacement warranty protects your investment. Installation is simple: clip it straight onto 35mm DIN rail, no extra fixings needed. The neutral connection is built in so you connect directly to the device terminal.
The NLS 30795 is not suitable for circuits in environments where frequent and sustained earth leakage is expected, nor for high-impedance earth systems (TT systems in some rural areas). It is also not intended for sub-circuits within larger commercial installations where fault discrimination across multiple protective devices may be needed — in those cases, selective (Type A-S or Type B) RCBOs are more appropriate. Do not use the 30795 in systems where the main earthing conductor is not in place or where the earth-fault return path is unreliable.
Verified Sparky Direct customer reviews: National Light Sources (SKU: 30795)
"Good option at a good price point. Would use again." — Brad
"Cheaper than Clipsal. Only time will tell" — Peter
"Excellent product, easy to install" — Steve
IMPORTANT: This product is Type A and compliant with the new legislation.
(30795)
The 30795 is an RCBO, which is a combined Residual Current Breaker with Over-current protection. It contains both an RCD that detects 30mA earth leakage and an MCB that protects against overload faults, in a single unit. You do not need a separate RCD and MCB on the same circuit when installing the 30795.
Type A detects both sinusoidal AC earth faults and pulsating DC earth faults, which can occur with modern electronic equipment such as LED drivers and variable frequency drives. Type AC detects AC faults only. Type A provides broader protection on circuits with modern appliances and is the current standard for new domestic installations in Australia.
The 30795 is designed for TN-C-S and TN-S earthing systems, which are the standard domestic configurations in Australia. In TT systems (found in some remote areas), you will need to verify that your earth-fault return path meets the design assumptions of the device. Consult your local electrical inspector or a licensed electrician if you are unsure whether your site has a TT system.
The 30795 has an electro-mechanical endurance rating of 4000 cycles of normal operation. In a typical residential circuit, this translates to many years of consistent service. The device carries a 3-year manufacturer replacement warranty. If the unit fails to operate correctly (e.g., does not trip on test) it should be replaced immediately.
No. The 30795 has an integral 1P+N connection, meaning the neutral is part of the unit itself. You connect the supply neutral directly to the device terminal. This saves space on crowded boards since no separate neutral bar link is needed.
Yes. The 30795 has non-polarised load connection, allowing you to feed the supply from either the top or bottom terminals. This flexibility is useful on boards where existing wiring may not allow top-feed entry.
No. The 30795 is rated for domestic and light commercial applications. Industrial circuits with higher fault levels, or circuits subject to frequent earth-leakage spikes, require higher breaking-capacity RCBOs (6kA or 10kA rated) or selective Type A-S devices. For industrial applications, consult the NLS product range for higher-rated options.
The National Light Sources 30795 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: 3 Year
Commercial Use: 3 Year
Warranty Method: Return to Sparky Direct
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | NATIONAL LIGHT SOURCES |
| SKU | 30795 |
| Model # | 30795NLS |
| Barcode # | 9336700016234 |
| Package Weight | 0.110kg |
| TYPE | VALUE |
|---|---|
| Type | Circuit Protection |
| Brand | National Light Sources |
| Rated Current (A) | 20 |
| Height (mm) | 81 |
| Width (mm) | 18 |
| Depth (mm) | 75 |
| Standards | AS/NZS 61009:1 |
| Mounting | Din Rail |
| Voltage (V) | 240V |
| Number of Poles | 1P+N |
| IP Rating | IP20 ( IP40 Enclosed ) |
| Breaking Capacity | 4.5kA |
| Box increments (This item is sold individually) | 12 |
| Earth Leakage Sensitivity | 30mA |
| Earth Leakage Protection Class | Type A |
| Curve | C |
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.
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