20w and 40 watt DC 12v and 24 volt fluorescent tube ballast

Premium Grade 12V and 24V, 20W and 40W Fluorescent ballast driver units

Premium Grade 12V and 24V, 20W, 30W and 40W Fluorescent ballast driver units

£8.99

OnSolar high grade DC Fluorescent Ballast Drivers. 20, 30 and 40W DC electronic fluorescent tube drivers / ballast units for domestic, commercial and marine applications.

These special units have been developed for use in 12v or 24v dc fluorescent strip lighting applications to power regular T8 tubes. These can be installed into existing luminaries to convert from AC to DC or can be used for custom installations.

The fluorescent tubes operating voltage (sine wave) is generated via a high quality fully electronic Integrated circuit to provide stable frequency, preventing flicker. Preheat starting as standard, to prolong lamp life, give good performance and high stability. Ballast is protected against failure: When no tube is connected, and when input inadvertently reverse polarity.

An ideal electronic ballast unit to power 18w/20w 60cm, 28/30w 90cm or 36w/40w 120cm T8 fluorescent tubes (choose option required as the case may be) in Domestic Off Grid homes, Trains, Boats / Ships, Remote Off Grid Solar for Barn, Stable, Workshop lighting, and more. Show More / Less

Please note: Unit price changes according to quantity. See a break down of our discount structure here: discount overview table

Note: Your lamp may appear dimmer when the power supply or battery is working at reduced voltage. For example a 12V system with an alternator feed may operate at 12.8V or higher, conversely a solar powered system in 'dull overcast conditions' may be struggling to maintain voltage and may drop to 11.8V. In this case the tube running at the lower voltage will be a little dimmer than the earlier example operating at 13.8V.

SAFETY 1ST... Please ensure the correct rating of cabling is used throughout when installing DC circuits. Long cable runs may require high grade, high amperage cables in order to prevent excessive voltage loss, especially when using multiple lamps on the same circuit. DC lighting circuits should be fitted with a suitably rated fuse to prevent fire in the event of short circuit or malfunction.

Note: 12V 24V 'AC' output transformers must not be used to provide power for this item. It had been designed to operate DC. Please ensure your power source has enough power reserve for your intended application. For any remote application, we recommend the use of Lead Acid or other quality rechargeable batteries and / or using a solar 'PV' panel & regulator to replenish power as necessary. A 20w tube may not appear any brighter than and 18w tube as will a 40w tube may not appear any brighter than a 36w tube.

Potential Faults: Having installed your OnSolar Fluorescent Ballast unit and tested it as working fine, your lamp subsequently works briefly and then goes out or becomes dim. This may indicates that the supply voltage had dropped to a level that is too low to reliably operate the driver unit. N.B: Readings taken at the battery with a voltmeter may indicate that your battery voltage is above 12v. Please measure voltage at the lamp fitting with it connected and 'ON', - voltage readings may show much lower. How to fix the problem: Upgrade to a higher capacity cable from power source to lighting unit and / or reduce cable length / reposition lamp closer to power source. Example: Installation fitted with 0.5mm twin core cabling, upgrade to 2.5mm.

Fitting Notes:

This item is supplied with pre-drilled with 2 lugs to be fitted either into a suitable existing luminaire or fluorescent lamp unit.

Using an incorrectly rated fluorescent tube with this device may result in device failure

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Our P&P is charged as follows

Regular delivery	2-5 working days	£2.85
Special	next working day	£5.60
Europe	Air delivery	£8.50

More Delivery Information »

Operating Voltage	12V or 24V DC Nominal. Unit is protected against low and high voltage within range: (-) 15% and (+) 20%
Wattage	Use only with a single 18/20W, 28/30 or 36/40W fluorescent tube (as the case may be)
Guarantee	2 Years
Operating temperature	-20°C +35°C
Connectivity	Screw Terminal connections for input and tube connections
Saftey Features	Built in Polarity Protection
Fittings	Mounting hole each end of case 9.5mm X 4mm
Dimensions	L 202 x H 28 x W 40 mm
Efficiency	85% (+/-5% depending on operating voltage)

Minimum Quantity	Percentage Discount
1	0
2	5
10	10
20	15
30	20