Blue Sea 3121 SMS Panel Enclosure with ELCI and Blanks

The Blue Sea 3121 SMS Panel Enclosure with ELCI (16A) is a surface-mount enclosure that pairs a lighter-duty 230V main breaker with 3 blank positions for future circuits. It is designed for smaller 230V shore power systems that still need ABYC E-11 compliant protection with room to expand.

The enclosure meets ABYC E-11 when fitted with an ELCI main breaker and mounted within 10 feet of the shore power inlet, and its glass-filled polycarbonate base with clear, overlapping cover lets you check breaker status without opening the box. Blank apertures accommodate Carling Technologies A- and C-Series breakers as your circuit needs grow. Browse more options in our panels, switches, and circuit breakers category.

Key Features

• Clear cover lets you check panel status at a glance without opening the enclosure.
• Oversized seamless PUR gasket seals out water better than a standard gasket.
• Removable stainless steel hinge pin simplifies service without disassembling the whole enclosure.
• LED backlighting with ON indication stays readable at night and shows status clearly.
• Includes waterproof glands, so the kit is ready to install without a separate parts run.

Frequently Asked Questions

What's the amperage rating on this enclosure's main breaker? It's rated 16A at 230V, a lighter-duty option than Blue Sea's other SMS enclosures.

Can I add more circuits later? Yes, the 3 blank positions accept Carling Technologies A- and C-Series breakers as your needs grow.

Does this meet ABYC E-11? Yes, when used with an ELCI Main circuit breaker and mounted within 10 feet of the shore power inlet.