A Harken Radial electric winch conversion kit turns an existing manual Harken Radial winch into a powered one by fitting an electric motor, gearbox, and control system below deck without replacing the winch itself. Kits are available for Radial winches from size 35 up through size 70, in 12V and 24V versions, so you can add push-button power to the winches you already own.
Radial electric conversion kits at a glance
| Winch size | Voltage | Motor power | Typical use |
|---|---|---|---|
| Size 35 | 12V / 24V | 700W / 900-990W | Coachroof, halyard & smaller sheet winches |
| Size 40 | 24V | 900W | Mid-size sheet & control-line winches |
| Size 50 / 60 | 12V | 1500W | Primary sheet winches on mid-size cruisers |
| Size 70 | 12V / 24V | 1500W / 2000W | Primary winches on larger cruising yachts |
What is a Harken Radial electric winch conversion kit?
A conversion kit is a below-deck power package that mounts to the base of a manual Harken Radial winch. Rather than buying a new electric winch, you keep the existing drum and gearing and drive it with an electric motor. A typical kit includes the electric motor, gearbox, control box, circuit breaker, and the deck switch or foot switches. Installation usually involves fitting the motor and gearbox under the winch and connecting the electrical components, and in most cases the winch itself does not have to be removed from the deck.
Why convert a manual winch to electric?
Powering a winch dramatically reduces the effort of grinding, which is especially valuable for short-handed and short-crewed sailing or when handling heavy sheet loads. It also improves control, letting you make fine, precise sail adjustments at the touch of a button, and it boosts overall efficiency and maneuverability because trimming no longer ties up a crew member on the handle.
Which Harken winches can be converted?
Harken conversion kits are offered for Radial winches from size 35 upward, and Classic winches from size 44 and larger. Within the Radial range, MAURIPRO stocks kits for sizes 35, 40, 50, 60, and 70. Each size is matched to a motor rating - roughly 700W for a size 35 up to 2000W for a size 70 - and you choose the voltage (12V or 24V) and motor orientation (left or right) to suit your boat's electrical system and the space beneath the winch.
How do I choose the right conversion kit?
Start with the exact model and size of your existing Harken Radial winch, since the kit must match it. Then confirm your boat's system voltage - 12V or 24V - and check the clearance and orientation below deck to decide between a left-motor and right-motor version. Larger winches draw more current, so a 24V system is often preferred on bigger boats to keep cabling and loads manageable.
Frequently asked questions
Do I have to replace my winch to make it electric?
No. A conversion kit powers your existing manual Harken Radial winch by adding a motor and gearbox below deck, so you keep the same drum and deck footprint.
What comes in a Harken conversion kit?
A kit typically includes the electric motor, gearbox, control box, circuit breaker, and switches needed to power and control the winch.
What sizes of Radial winch can be converted?
Radial winches from size 35 upward can be converted; MAURIPRO carries kits for sizes 35, 40, 50, 60, and 70. Classic winches from size 44 and larger are also supported.
Should I choose 12V or 24V?
Match the kit to your boat's electrical system. 12V versions suit most smaller and mid-size boats, while 24V versions are common on larger yachts and higher-power winches to reduce current draw.
What is the difference between a left-motor and right-motor kit?
Left and right refer to the motor's mounting orientation under the winch. Choose the one that fits the available space and layout below your deck.
Is installation something I can do myself?
In most cases installation involves fitting the motor and gearbox under the winch and connecting the electrical components without removing the winch, though wiring should follow the kit instructions and any applicable electrical standards.
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