These four Blue Sea common busbars organize several electrical conductors at one shared connection point. The difference is the terminal pattern: the 2300 and 2301 each have ten small screw terminals plus two larger studs; the 2302 doubles the screw-terminal count; and the 2303 uses four studs without a row of small screws. Use this guide to identify the correct format before ordering parts for a DC distribution project.
Which terminal arrangement fits the wiring?
The sketches show connections on one common metal bus. They do not show separate positive and negative bars, internal fuses or insulated sections. On a correctly designed RV system a common busbar may group negative returns or serve as a protected positive distribution point, but a positive conductor still requires suitable overcurrent protection.
10 screw terminals + 2 studs, with cover. All marked positions belong to one common conductor. Layout is conceptual.
10 screw terminals + 2 studs, no cover. All marked positions belong to one common conductor. Layout is conceptual.
20 screw terminals + 2 studs, no cover. All marked positions belong to one common conductor. Layout is conceptual.
4 studs, no screw terminals or cover. All marked positions belong to one common conductor. Layout is conceptual.
2300 versus 2301, 2302 and 2303
| Model | Screw terminals | Terminal studs | Insulating cover | Continuous rating |
|---|---|---|---|---|
| 2300 | 10 × #8-32 | 2 × 1/4 in | Included | 150A DC / 130A AC |
| 2301 | 10 × #8-32 | 2 × 1/4 in | Not included; 2715 optional | 150A DC / 130A AC |
| 2302 | 20 × #8-32 | 2 × 1/4 in | Not included; 2716 optional | 150A DC / 130A AC |
| 2303 | None | 4 × 1/4 in | Not included; 2715 optional | 150A DC / 130A AC |
Blue Sea specifies 48V DC maximum and 300V AC maximum for these models. The bus is tin-plated copper, with stud torque specified at 60 in-lb (6.78 Nm). For the three models with #8-32 screw positions, manufacturer screw-terminal torque is 15 in-lb (1.69 Nm). These are electrical-component ratings, not an assertion that any busbar is appropriate for every RV circuit.
Find the corresponding NewRVParts busbar
Each card opens the exact product listed in our catalog, with its catalog image and current warehouse availability. NewRVParts items are shipped from supplier warehouses and are not available for onsite viewing or collection.
Blue Sea dimensioned drawings and installation specifications
For hole spacing, clearance, torque and approved accessory details, consult the manufacturer's 2300, 2301, 2302 and 2303 product pages. Manufacturer dimensioned drawings are available there.