Identify Sea-Dog SD-17 Panel Breakers by Amperage

An SD-17 breaker mounted through a dashboard or panel is not necessarily the same case as the surface-mounted version with an equal amp rating. The Sea-Dog 830190-series uses a sealed panel-mount body with stud connections. Check the original breaker number, amp rating, mounting dimensions and conductor terminals before replacement.

Identify panel-mount SD-17 breakers

The table compares exact manufacturer numbers and separates electrical ratings from mechanical fit. On small screens, scroll horizontally to see all specifications.

Sea-Dog MPN Amps Mounting Terminal DC maximum
830190 25A Panel mount ¼-28 studs 48V DC
830191 30A Panel mount ¼-28 studs 48V DC
830193 50A Panel mount ¼-28 studs 48V DC
830194 60A Panel mount ¼-28 studs 48V DC
830195 70A Panel mount ¼-28 studs 48V DC
830197 100A Panel mount ¼-28 studs 48V DC
830198 120A Panel mount ¼-28 studs 48V DC
830199 150A Panel mount ¼-28 studs 48V DC
Important fit distinction: Panel- and surface-mounted SD-17 breakers have different case dimensions even at the same amperage. Sea-Dog lists the panel style at IP67, up to 48V DC, with ¼-28 stud terminals. Manufacturer diagram labels A–E are provided below; use the original dimension drawing for measurement locations rather than assuming A is the cutout.

Manufacturer diagram dimensions: A = 2-15/16 in, B = 1-15/16 in, C = 2-1/8 in, D = 2-7/16 in, E = 1-9/16 in. These are the manufacturer's labelled measurements, not all mounting-hole dimensions. See the linked original drawing for what each label measures.

Hi-Amp construction: Sealed IP67 housing with a manual reset and visible trip indication. Sea-Dog lists 3,000A interrupt capacity at 14V DC and 1,500A at 48V DC, with ignition protection to SAE J1171.

Manufacturer dimension and specification references: dimension diagram. These include the original switch and breaker drawings.

What to inspect before replacement

  1. Confirm the circuit calls for a panel-mounted breaker with an opening through the mounting surface.
  2. Match the existing amp value and the ¼-28 stud terminal connections.
  3. Measure the enclosure and use Sea-Dog's A–E dimension sketch instead of substituting a surface-mount body.
  4. Inspect wire lugs, insulation, cable protection and current-carrying capacity before installation.
  5. Use the correct engine-compartment electrical protection and check clearance for manual reset and visible trip indication.

Matching part-number listings

Each card opens an exact UsedRVParts product listing. Check the stated condition and current availability; viewing and pickup in Kelowna are by appointment.

Continue with marine ignition switch types, compact SD-13 breakers, surface-mount SD-17 breakers. For more general electrical switching see our Sea-Dog toggle-switch identification guide. For inline fuse components, visit the Sea-Dog AGC fuse-holder identification guide.

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