Overview

The Blue Sea Systems 1520 is a blank ML-Contura switch panel for the 360 Panel System that accepts three switches sold separately. Its face measures 4.75 in high by 4.88 in wide with a depth of 0.125 in, making it a compact way to add a three-switch control section where panel space is limited.

This panel is used when you want a clean three-position layout in a Blue Sea 360 installation without being locked into a preconfigured switch set. It gives you backlit labels and lockout slides, which helps when the panel is mounted at the helm, nav station, or in an electrical locker where the controls need to stay easy to identify and harder to bump by mistake.

Because this is the blank panel rather than a complete switch assembly, the final function depends on the ML-Contura switches installed behind it. That makes it a practical choice for boats using remote battery switching or charging relay controls that need a tidy, labeled panel location.

Key features

• Accepts three ML-Contura switches in one 360 Panel opening
• Backlit labels keep each switch position easier to read in low light
• Lockout slides help reduce accidental switching
• Compact 4.75 in x 4.88 in face size with 0.125 in depth
• Switches are sold separately, so the panel can be configured around the control functions the boat actually uses

Compatibility and fit

This panel is meant for Blue Sea 360 Panel System layouts and is sized to match that modular format. It accepts three ML-Contura switch positions, so it fits best when the rest of the boat's electrical plan already uses that switch style and the 360 frame layout.

Before ordering, check both the visible panel space and the clearance behind the mounting surface. The panel itself is thin, but the installed switches and wiring will determine how much room the finished assembly needs behind the dash or bulkhead.

Installation and setup

Installation is straightforward when you are already working within a 360 Panel build. The panel gives you the switch locations and labeled face, while the switching logic comes from the ML-Contura switches chosen for the job. That is useful when one boat needs remote battery switch control, another needs charging relay control, and both still need the same three-switch panel footprint.

This is a good match for builders, refitters, and owners who want a grouped control point that stays organized and easy to read without moving to a larger custom panel. It also works well when an existing 360 setup needs one more three-switch section added in a way that looks consistent with the rest of the electrical panel.