Blue Sea Systems 3133 SMS Panel Enclosure DC Main & 3 Branch Circuit Breaker 12/24V

The Blue Sea Systems 3133 is a Surface Mount System (SMS) panel enclosure designed to house DC circuit breakers and other large-frame devices in marine, RV, and powersports electrical systems. Configured with one 12/24V DC main breaker position and three 12/24V DC branch circuit positions (15A each), this enclosure provides a clean, organized, and weather-resistant solution for onboard DC power distribution.

Constructed from a glass-filled polycarbonate base with a clear cover, the 3133 allows easy visual monitoring of circuit breaker status without opening the enclosure. The overlapping cover design adds structural strength while improving gasket protection, and the oversized, formed-in-place seamless PUR gasket delivers a reliable weatherproof seal.

Key Features:

• Blank apertures for custom breaker loading
• Glass-filled polycarbonate base for durability
• Clear cover for easy circuit breaker status monitoring
• Overlapping cover design for added strength and gasket protection
• Oversized seamless PUR gasket for weatherproof sealing
• Easily removable stainless steel hinge pin for unobstructed installation
• Stainless steel latch secures cover without penetrating the enclosure
• Compatible with Carling Technologies™ A and C Series Flat Rocker and ELCI Main circuit breakers
• Includes waterproof cable glands
• 6 x Amber LED lights for backlighting and ON indication
• Stainless steel mounting hardware included

Technical Specifications:

• Circuit Configuration: 1 x 12/24V DC Main + 3 x Branch 12/24V DC (15A)
• Overall Dimensions (H x W x D): 7.6" x 7.4" x 4.7" (192 x 188 x 120 mm)
• Enclosure Dimensions (H x W x D): 6" x 6" x 4" (152 x 152 x 102 mm)
• LEDs Installed: 6 x Amber

The Blue Sea Systems SMS series is trusted by marine electricians and installers worldwide for its robust construction and flexible configuration. The 3133 is ideal for boats, RVs, and off-grid DC systems requiring a compact, professional-grade 12V or 24V circuit breaker panel.