Thunderbird Electric Fence Energiser Model Comparison Charts

Solar Powered Electric Fence Energisers

Solar Powered Electric Fence Energisers Small – with internal batteries

Model	Stored Energy	Maximum Distance	Voltage @ no load	Voltage @ 10000 Ohms
S18B	0.15 Joules	1.5 km	7.0 kV	2.6 kV
S28B	0.23 Joules	2.5 km	7.2 kV	3.3 kV

Solar Powered Electric Fence Energisers Medium – with internal batteries

Model	Stored Energy	Maximum Distance	Voltage @ no load	Voltage @ 10000 Ohms
S45B	0.47 Joules	5.0 km	7.8 kV	5.0 kV
S75B	0.71 Joules	10 km	7.8 kV	5.8 kV

Solar Powered Electric Fence Energisers Large – with internal batteries

Model	Stored Energy	Maximum Distance	Voltage @ no load	Voltage @ 10000 Ohms
S180B	1.78 Joules	20 km	7.4 kV	6.0 kV

Solar Powered Electric Fence Energisers Large – without internal batteries

S255 25km Solar Energiser (MB255 + solar kit)
S340 35km Solar Energiser (MB340 + solar kit)
S560R 50km Solar Energiser (MB560R + solar kit)
S1060R 85km Solar Energiser (MB1060R + solar kit)
S1760R 135km Solar Energiser (MB1760R + solar kit)

Model	Stored Joules	Max Distance	Voltage @ No Load	Voltage @ 250 Ω	Current Drain	Solar Kit Size 12V
S255	2.33 J	25 km	7.9 kV	5.1 kV	160 mA	20 W
S340	3.4 J	35 km	7.9 kV	5.9 kV	210 mA	20 W

Model	Stored Joules	Max Distance	Voltage @ No Load	Voltage @ 250 Ω	Current Drain	Solar Kit Size 12V
S560R	6.3 J	50 km	8.1 kV	5.6 kV	205-380 mA	40 W
S1060R	10.5 J	85 km	8.3 kV	6.4 kV	435-730 mA	80 W
S1760R	16.8 J	135 km	8.2 kV	6.7 kV	550-1250 mA	120 W
S2750R	27.8 J	200 km	8.9 kV	7.6Kv @ 100 ohm	1.0-4.0 A	240 W
S5600R	55.3 J	350 km	9.0 kV	8.4Kv @ 100 ohm	1.8-6.6 A	480 W

Note: Deep cycle type batteries are recommended. Solar panel sizes may vary due to geographical locations. Larger panels may be required in some areas. Energiser distances are a guide only. Factors such as proximity of live wire(s) to earth or to other parts of a fence, distance of live wire run underground, thickness of wire and earth condition will affect the effective distance. Thunderbird recommend a minimum distance of 200mm between the live wire(s) and any other conductor, otherwise effective energiser distance is reduced.

Mains 240v Powered Electric Fence Energisers

Mains Powered Electric Fence Energisers – Small

Model	Stored Energy	Max Distance	Voltage @ No Load	Voltage @ 1000 Ω	Power Usage (Watts)
M30	0.29 J	2.5 km	8.0 kV	2.8 kV	2.0 W
M65	0.83 J	7.5 km	7.8 kV	4.0 kV	3.0 W
M125	1.4 J	15 km	9.5 kV	6.1 kV	4.0 W

Mains Powered Electric Fence Energisers – Medium

Model	Stored Energy	Max Distance	Voltage @ No Load	Voltage @ 500 Ω	Power Usage (Watts)
M260	2.2 J	25 km	8.4 kV	4.9 kV	5.0 W
M360	3.1 J	35 km	8.6 kV	5.3 kV	7.0 W

Mains Powered Electric Fence Energisers – Large

Model	Stored Energy	Max Distance	Voltage @ No Load	Voltage @ 250 Ω	Power Usage (Watts)
M650R	5.6 J	60 km	8.2 kV	5.1 kV	11 W
M1150R	10.9 J	90 km	8.2 kV	5.9 kV	18 W
M1680R	16.8 J	130 km	7.8 kV	5.6 kV	29 W

Battery Powered Electric Fence Energisers

Model	Distance	Stored Energy	Battery Drain	Solar Option	Low Battery Indication	Voltage @ no load	Voltage @ 1000 Ω
BD20	2 km	0.16	15 mA	Yes – 5 W	Yes	7.5 kv	1.7 kv
B20	2 km	0.33	33 mA	Yes – 5 W	Yes	7.1 kv	4.4 kv
B60	7.5 km	0.7	33 mA	Yes – 5-8 W	Yes	8.6 kv	5.9 kv
B120	15 km	1.5	105 mA	Yes – 5-8 W	Yes	8.7 kv	6.7 kv

Mains or Battery Powered Electric Fence Energisers

Mains or Battery Powered Electric Fence Energisers – Small

Model	Stored Joules	Max Distance	Voltage @ No Load	Voltage @ 250 Ω	Current Drain	Solar Kit Size 12V
MB67	0.75 J	7.5 km	8.6 kV	4.6 kV	40 mA	5.8 W
MB135	1.5 J	15 km	8.4 kV	5.2 kV	80 mA	10 W

Mains or Battery Powered Electric Fence Energisers – Medium

Model	Stored Joules	Max Distance	Voltage @ No Load	Voltage @ 250 Ω	Current Drain	Solar Kit Size 12V
MB255	2.33 J	25 km	7.9 kV	5.1 kV	160 mA	20 W
MB355	3.4 J	35 km	7.9 kV	5.9 kV	210 mA	20 W

Mains or Battery Powered Electric Fence Energisers – Large

Model	Stored Joules	Max Distance	Voltage @ No Load	Voltage @ 250 Ω	Current Drain	Solar Kit Size 12V
MB560R	6.3 J	50 km	8.1 kV	5.6 kV	205-380 mA	40 W
MB1060R	10.5 J	85 km	8.3 kV	6.4 kV	435-730 mA	80 W
MB1760R	16.8 J	135 km	8.2 kV	6.7 kV	550-1250 mA	120 W
MB2750R	27.8 J	200 km	8.9 kV	7.6Kv @ 100 ohm	1.0-4.0 A	240 W
MB5600R	55.3 J	350 km	9.0 kV	8.4Kv @ 100 ohm	1.8-6.6 A	480 W

Energiser distances are a guide only. Factors such as proximity of live wire(s) to earth or to other parts of a fence, distance of live wire run underground, thickness of wire and earth condition will affect the effective distance. Thunderbird recommend a minimum distance of 200mm between the live wire(s) and any other conductor, otherwise effective energiser distance is reduced.