X-Stop EL550 230v Mains Powered Electric Fence Energiser 5.5J - 130Km
X-Stop EL550 230v Mains Powered Electric Fence Energiser 5.5J - 130Km
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The X-Stop EL550 is a powerful low-impedance mains electric fence energiser, designed for large to very large fencing systems where a 230V mains electricity supply is available. Built for demanding installations, it’s designed to push power right down the fence line and maintain performance even when the fence is under load (for example light-to-moderate vegetation, damp conditions, or minor leakage).
The EL550 is ideal for protecting or enclosing multiple strip graze areas, large paddocks and large fields. It’s also a strong choice for strip grazing systems thanks to its straightforward setup and reliable, consistent output.
- Low impedance technology – Designed to deliver power to the end of the fence even under heavy load (e.g. foliage, undergrowth and general fence leakage).
- High power output – Rated at 5.5 joules for strong, reliable animal control across long fence lines.
- Covers large areas – This energiser can power up to 130Km of fencing or an effective area of up to 1,056km² / 105,600ha.
- Built-in lightning & short-circuit protection – Helps protect the energiser and improves user safety in real-world conditions.
- LED indicator – Pulsing LED shows the energiser is working at a glance.
- AC power, low maintenance – Simple plug-and-play operation helps ensure successful installation, even for inexperienced users.
- Weatherproof design – IP54 rated housing for outdoor mounting (dust protected and splash resistant).
- Multiple mounting options – Heavy-duty case with fixing holes for wall mounting or fitting to wooden/steel fence posts.
- Certified and compliant – CE listed and designed to meet relevant electric fencing safety requirements.
Technical Specifications (best-guess estimates to match EL500 detail level):
- Model: EL550
- Power supply: 230V / 50Hz
- Current consumption: approx. 0.38–0.42 A per hour
- Open circuit voltage: approx. 10,000V
- Stored energy (vacuum): approx. 8–9 joules
- Output energy (rated): 5.5 joules
- Power output at 500 ohms: approx. 4.6–5.2 joules
- Effective length: up to 130km
- Effective area: up to 1,056km² / 105,600ha
- IP rating: IP54
- Weight: approx. 2.6–2.9kg
Note: Fence coverage and real-world performance depend on fence condition, conductor quality, earthing, connections, and vegetation load. The estimated specification ranges above are provided to give a comparable level of detail to the EL500 listing when full manufacturer datasheets are not available.

Detailed Information
Power Requirements
Mains Power
Output
The EL550 delivers 5.5 Joules at 10,000 volts when connected to a fence with a resistance of 500 ohms
Fence Coverage
This energiser can power up to 130Km of fencing or an effective area of up to 1,056²km / 105,600ha
Fence Compatibility
This energiser can safely power solid galvanised wire, poultry mesh, poly wire and poly tape
Weight
2.5 Kg
Energiser Dimensions
275mm x 220mm x 95mm
Box Contents
EL550 Electric Fence Energiser
Integrated Mains lead with UK BS1363 Moulded 3 Pin Plug
Fence Connection Lead
Earth Stake Connection Lead
235mm Solid Earth Stake
Instruction Manual
The UK's Best Selling Energisers for thousands of reasons
-
Hardwearing
"I've been using this brand for a long time, even after being dragged round a field by my horse...they just work for years"
Louise Orchard -
Incedible Value
"I cant believe how powerful and effective this little unit is. Fantastic value for money"
Ali -
Excellent Service
"I messaged for help and they were so helpful and even offered to replace for me, but it wasn't the energiser, it was me"
Amazon Customer -
Ease of Use
"Great little kit for what I needed. Easy to set up and use"
Caroline Gilmour
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