Silenced diesel generator with key start, AVR and 110V and 230V 32A outlets, giving 5kVA continuous power for site, workshop and backup use.
Products marked (TO ORDER) may not be available from stock for same-day or next-day delivery. Please contact our team to confirm delivery dates.
Silenced diesel generator with key start, AVR and 110V and 230V 32A outlets, giving 5kVA continuous power for site, workshop and backup use.
Products marked (TO ORDER) may not be available from stock for same-day or next-day delivery. Please contact our team to confirm delivery dates.
| BULK DISCOUNT | 3 | 5 |
|---|---|---|
| Price | £1,692.18 £2,030.62 | £1,607.57 £1,929.08 |
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Log in to access trade discountsThis silenced diesel generator houses a 0.5L single-cylinder diesel engine in a powder-coated steel cabinet on four wheels. It supplies 110V or 230V through 32A industrial sockets, chosen with a selector switch, plus a 12V output for battery charging. Use it for site power, workshops and backup supply where diesel suits longer running.
Smaller petrol generators need refuelling during a long day, and petrol is a hazard to store in quantity on site. That means stopped work while someone refuels, and another flammable liquid to manage in the compound. This generator runs on diesel for 7.5 hours at full load from its 14.5L tank, so one fill covers a standard shift.
Diesel engine: runs 7.5 hours at full load from a 14.5L tank, using the same fuel as site plant.
Silenced steel cabinet: encloses the engine to reduce noise, with a powder-coated finish against chips and weather.
32A 110V and 230V sockets: take 32A site leads and distribution, with a selector switch to choose the voltage.
Key electric start: starts from the fitted 12V battery with a turn of the key.
Automatic voltage regulator: holds the output voltage steady as loads switch on and off.
Fuel gauge and drain points: show the fuel level at a glance and make oil and fuel changes cleaner.
Four wheels and end handles: move the generator across firm ground without lifting gear.
Trades and roles
Site managers and builders
Groundworkers
Workshop and plant teams
Event and hospitality crews
Facilities managers
Farm and estate staff
Industries
Construction
Civil engineering
Events and hospitality
Facilities management
Agriculture
| Specification | Detail |
|---|---|
| Product name | SIP Medusa T5500 Silenced Diesel Generator - 5.5k 110V 230V |
| Product code | PL050006 |
| Product type | Silenced diesel generator, single phase, 110V and 230V |
| Peak output | 5.5kVA / 5.5kW |
| Continuous output | 5kVA / 5kW |
| 230V output | 1x 32A blue industrial socket, 24A, 5.0kW continuous, 5.5kW peak |
| 110V output | 1x 32A yellow industrial socket, 30A, 3.5kW continuous, 3.8kW peak (panel marked 115V) |
| Socket type | IEC 60309 industrial sockets (marked IEC309-2), weatherproof hinged covers |
| Voltage selection | Socket selector switch, one voltage at a time; switch voltage only with the load under 2kW |
| Power factor | 1.0 |
| DC output | 12V, 6A, unregulated, for charging 12V AGM or similar batteries only, not at the same time as the AC output |
| Voltage regulation | Automatic voltage regulator (AVR) |
| Engine | 0.5L single-cylinder diesel |
| Emissions | EURO V |
| Start | Key ignition electric start |
| Starter battery | 12V 36Ah |
| Fuel | Diesel only |
| Fuel tank capacity | 14.5L |
| Fuel gauge | Yes, empty to full gauge beside the filler cap |
| Runtime | 7.5 hours at full load |
| Engine oil | SAE 10W-30 or 10W-40, 1.5L, supplied without oil |
| Earthing | Earth terminal, connect to an approved earth with wire over 6mm2 |
| Engine protection | Low oil alert lamp with automatic engine stop |
| Overload protection | Magnetic circuit breakers (1-pole and 2-pole) and overload switch |
| Controls | Key switch, on/off switch, run/stop lever, oil alert lamp, voltmeter and hour meter, AC circuit breakers, socket selector switch, 12V DC terminals, earth terminal |
| Enclosure | Silenced steel cabinet, powder-coated finish, lockable access service panel |
| Drain points | Fuel drain and oil drain |
| IP rating | IP23M |
| Performance class | G1 |
| Standards | BS EN ISO 8528-13:2016, BS EN ISO 12100:2010, BS EN ISO 3744:1995, BS EN 55012:2007+A1:2009, BS EN 61000-6-1:2019 |
| Operating limits | -5C to +40C ambient, up to 1000m altitude |
| Sound power level | 97dB(A) LwA |
| Markings | UKCA, CE (cabinet label and UK and EU Declarations of Conformity) |
| Mobility | Four steel wheels with solid rubber tyres, lifting handles at both ends |
| Service kit | SIP PW01-03143 (inline fuel filter, oil filter, air cleaner element) |
| Dimensions (H x W x D) | 930mm x 690mm x 795mm |
| Weight | 156.6kg |
| Warranty | SIP 24 months or 1000 working hours, first oil and filter change at 1 month or 20 hours required |
| Brand | SIP (Medusa range) |
| Equipment, tool or condition | Suitability |
|---|---|
| 110V site tools with yellow 32A plugs | Suitable, with the selector set to 110V |
| 110V site tools with yellow 16A plugs | Suitable with a 32A to 16A fly lead or splitter box |
| 230V equipment with blue 32A or 16A plugs | Suitable, with the selector set to 230V, through an adaptor for 16A |
| 230V equipment with UK 3-pin 13A plugs | Suitable with a 32A to 13A adaptor lead, within the load limit |
| Long shifts and standby use | Suitable, 7.5 hours at full load from 14.5L of diesel |
| 12V AGM or similar batteries | Suitable, through the 12V DC output with the AC output switched off |
| Moving across firm, level ground | Suitable, on four wheels using the end handles |
| 110V and 230V loads at the same time | Not recommended, the socket selector switch makes one socket live at a time |
| AC and DC outputs at the same time | Not recommended, the manual says not to use them together |
| Loads above 5kVA continuous | Not recommended, choose a larger or three phase diesel generator |
| Three phase 400V equipment | Not recommended, single phase only, choose a three phase generator |
| Petrol | Not recommended, diesel fuel only |
| Lifting by hand or into a van | Not recommended, it weighs 156.6kg, use lifting equipment |
| Indoor, enclosed or poorly ventilated spaces | Not recommended, exhaust gases contain carbon monoxide, run outdoors only |
| Connecting into building wiring | Not recommended, unless installed by a qualified electrician with a changeover switch |
Site managers, workshop teams and facilities staff use this generator where power is needed for full shifts and diesel is already on site. It suits compounds, workshops, mobile hospitality and secondary supply for buildings. Operators should understand the voltage selector, load limits and diesel handling.
Running 110V tools and lighting on construction sites before the temporary supply is connected.
Powering 230V workshop machinery, tools and lighting away from mains.
Supplying power for mobile catering and hospitality at outdoor events.
Providing a secondary 230V supply for essential plug-in equipment during outages.
Running compound and welfare lighting through winter shifts.
Charging 12V lead-acid batteries on plant through the DC output.
Step 1: Wheel the generator outdoors onto firm, level ground, well away from doors, windows and air vents.
Step 2: Check the engine oil, then fill the tank with diesel only, using the fuel gauge to avoid overfilling.
Step 3: Follow the earthing instructions in the manual before connecting any equipment.
Step 4: With the AC switch off and the run lever at RUN, turn the key to START and release it as soon as the engine starts. If it does not start within 10 seconds, wait 15 seconds before trying again. Let it run for two minutes before applying any load.
Step5: With nothing plugged in, use the socket selector to choose the 110V or 230V socket.
Step 6: Check the meter and switch the circuit breakers on, then plug in the largest load first.
Step 7: Switch off the equipment and the AC circuit breakers, run the generator for a minute without load, then turn the key to OFF and remove it.
Filling with petrol instead of diesel.
Plugging in before setting the voltage selector to match the equipment.
Expecting 110V and 230V to run at the same time.
Using the 12V DC output and the AC sockets at the same time.
Skipping air cleaner and filter changes on long hires.
Exhaust gases contain carbon monoxide, so run the generator outdoors only and keep the exhaust away from buildings and people. Stop the engine before refuelling and keep open flames away from the filler. HSE guidance favours 110V centre-tapped earth supplies for portable tools on construction sites, so check the manual and your site rules before relying on the 110V output. At 156.6kg, use suitable lifting equipment for loading and unloading. The sound power level is 97dB(A), so wear hearing protection when working close to it.
Change the engine oil and oil filter after the first month or 20 hours, as SIP requires this for the full warranty. After that, change the engine oil every 3 months or 100 hours, and the oil filter and air filter every 6 months or 300 hours. Check the oil level before every start, using SAE 10W-30 or 10W-40. Check the starter battery monthly and charge it if it reads below 12.3V. SIP service kit PW01-03143 contains the inline fuel filter, oil filter and air cleaner element for scheduled servicing.
Q: Can I run 110V and 230V at the same time?
A: The control panel has a voltage selector switch, which chooses whether the 110V or 230V socket is live. Plan your work around one voltage at a time. SIP gives the 230V output as 24A, about 5kW, and the 110V output as 30A, about 3.5kW.
Q: What do 5.5kVA and 5kVA mean on a diesel generator?
A: 5.5kVA is the peak output, held only for short periods such as motor start-up. 5kVA is the continuous output the generator supplies for hours. Size your loads against the continuous figure. kVA measures total electrical load, while kW measures the useful power drawn by equipment.
Q: What does IP23M mean on this generator?
A: The 2 means protection against solid objects over 12.5mm, such as fingers. The 3 means protection against water sprayed at up to 60 degrees from vertical. The M means the water test was carried out with the moving parts running. Shelter the generator from heavy rain without blocking its vents.
Q: What is this generator not suitable for?
A: It is not suitable for indoor or enclosed use, three phase 400V equipment, or loads above 5kVA continuous. It runs on diesel only. It should not be connected into building wiring unless a qualified electrician fits a changeover switch.
Q: Why choose diesel over a petrol generator of a similar size?
A: Diesel is less flammable than petrol to store and is often already on site for plant. This model runs 7.5 hours at full load from one fill and sits in a silenced cabinet. A petrol generator is lighter and cheaper to buy, so it suits shorter jobs and smaller loads.
Q: Which plugs and leads fit the sockets?
A: Both outlets are 32A industrial sockets, yellow for 110V and blue for 230V. Most 110V hand tools have 16A plugs, so use a 32A to 16A fly lead or a splitter box. UK 3-pin plugs need a 32A to 13A adaptor lead on the 230V side.
Q: How often does it need servicing?
A: Check the oil before each start and follow the maintenance schedule in the manual. After the first oil and filter change at 1 month or 20 hours, change the oil every 3 months or 100 hours, and the oil and air filters every 6 months or 300 hours. The SIP service kit includes the fuel filter, oil filter and air cleaner element in one pack.
