FURUNO 520-5PSD Plastic Through-Hull Transducer, 600 W 50/200 kHz – 520-5PSD

Description

The FURUNO 520-5PSD is a plastic thru-hull transducer designed for compatible Furuno fish-finder and sounder systems. Rated at 600 W and operating at 50 / 200 kHz, it converts the sounder’s electrical pulses into acoustic energy and returns underwater echoes used to display depth, fish and bottom structure. Because the transducer is the part of the sonar system that actually interacts with the water, correct hull material, mounting method and installation location are just as important as the display connected to it.

• 600 W sounder rating: Matched to compatible Furuno sounders that support this conventional CW transducer class.
• 50 / 200 kHz operation: Dual-frequency acoustic coverage gives a broader search beam at the lower frequency and finer target definition at the higher frequency.
• Plastic thru-hull housing: Intended for installations where this material and mounting method suit the hull construction and vessel use.
• approx. 46° / 10° beam pattern: Frequency-dependent beamwidth balances broad coverage with tighter high-frequency detail.
• 8 m cable with 10-pin connection: Factory lead simplifies connection to compatible Furuno sounder ports without field-splicing the transducer cable.

What This Transducer Measures

The 520-5PSD provides depth information according to the connected sounder and the sensor elements built into this model. Depth comes from the acoustic return itself, while speed and temperature—where fitted—are supplied by dedicated sensor elements in the housing. The connected Furuno display determines which sounder features can be used with the data.

50/200 kHz Conventional Sonar

At the lower frequency, the transducer uses a wider acoustic beam that covers more water and is generally better suited to deeper searching. At 200 kHz, the beam is narrower, which improves separation of nearby targets and bottom detail in shallower to moderate depths. Many Furuno sounders can display both frequencies together, allowing the operator to compare broad coverage with higher-resolution detail.

Through-Hull Installation

Installation quality has a major effect on sonar performance. The transducer face must stay in clean, non-aerated water and should be kept away from strakes, steps, through-hulls, propeller wash and other sources of turbulence. The straight plastic stem should be installed where the hull angle does not point the beam excessively off vertical. On higher-deadrise hulls, a low-profile tilted-element or fairing-supported model may produce better geometry.

Any transducer that passes through the hull requires careful sealing and compatibility with the hull material. Plastic through-hull housings should not be installed in applications where the hull or fittings create a galvanic or structural concern. Bronze housings are generally suited to fiberglass and wood but should be evaluated carefully before use in metal hulls. Follow Furuno/Airmar installation instructions rather than choosing sealant and torque values generically.

Compatibility and Sounder Features

The 520-5PSD uses a 10-pin Furuno connection and is listed with multiple Furuno fish finders and MFD sounders. Exact support for ACCU-FISH, Bottom Discrimination or RezBoost depends on the sounder model and transducer identification. Buyers should match the transducer to the actual Furuno display before drilling the hull, because physical fit alone does not guarantee every software feature will be enabled.

Cable Handling

The transducer cable should be routed away from ignition wiring, high-current conductors and other noise sources. Avoid cutting or splicing the cable unless Furuno specifically authorizes the method, because the cable is part of the acoustic system and an improper splice can introduce signal loss or noise. If additional length is required, use the correct Furuno extension cable for the connector and sounder.

What’s in the Box

• 520-5PSD plastic thru-hull transducer
• Factory-attached 8 m cable with 10-pin connector
• Standard mounting / installation hardware appropriate to the model
• Installation documentation

Specifications

• Model: 520-5PSD
• Housing: Plastic
• Mount type: Thru-Hull
• Power rating: 600 W
• Frequencies: 50 / 200 kHz
• Beam angles: approx. 46° / 10°
• Functions: Depth
• Cable: 8 m
• Connector: 10-pin
• Compatibility: Selected Furuno conventional fish finders / MFD sounders; verify exact model before installation