Bussmann CB285P-60 Eaton series CB285P marine rated circuit breaker, Switchable, 48 Vdc, 60A, 3 kAIC, Automotive, type III, high amp, Single-pole, Waterproof.
- Amp rating: 285 A
- Interrupt rating: 3 kAIC
- Product type: Circuit Breaker
- Dimensions (L x W x H): 1.9 x 1.77 x 2.91 in
Genuine Bussmann part number CB285P-60.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 60 A
- Compliances:
- Contact factory
- Interrupt Rating:
- 3 kAIC
- Mounting Method:
- Panel
- Number Of Poles:
- Single-pole
- Packaging Type:
- Standard
- Product Height:
- 2.91 in
- Product Length Depth:
- 1.9 in
- Product Weight:
- .175 lb
- Product Width:
- 1.77 in
- Special Features:
- Switchable
- Voltage Rating:
- 48 Vdc
- Department:
- Electrical
- Product Material:
- Waterproof
- Product Type:
- Circuit Breaker
- Product Group:
- Fuses
- Product Subgroup:
- Automotive Fuses
Bussmann CB285P-60 – Frequently Asked Questions
1) Is the Bussmann CB285P-60 breaker rated for a 48V DC system?
The CB285P-60 is rated 48 Vdc, single-pole, so it suits 12V, 24V, and 48V DC systems such as marine house banks, RV and truck circuits, and battery-to-inverter feeds. It is a DC-rated automotive style breaker, not an AC panel breaker.
2) What amperage does the Bussmann CB285P-60 circuit breaker protect at?
It is a 60 amp device, with a 3 kAIC interrupt rating. Size the cable to the 60A trip point, not to the breaker frame, and keep the breaker as close to the battery or source as the run allows.
3) Will this breaker hold up mounted in an open bilge or exposed engine bay?
It is a marine rated, waterproof breaker, so exposure to spray and damp in a bilge, engine compartment, or exterior equipment box is within what it is built for. Mounting is panel style, so you need a flat bulkhead or panel face with clearance behind for the studs and cable lugs.
4) Can this Bussmann breaker be used as an on/off switch for the circuit?
Yes. The CB285P-60 is a switchable type III breaker, so the lever can be thrown manually to isolate the circuit for service as well as tripping on overload. That is what separates it from an auto-reset breaker, which gives you no manual disconnect.
5) Should I use a switchable breaker like the CB285P-60 or a fuse and block for a DC branch circuit?
A fuse and block is the cheaper one-time protection, but it has to be replaced after every fault and gives you no way to kill the circuit. The CB285P-60 resets and doubles as a manual disconnect, which is why it gets used on winches, inverters, thrusters, and accessory feeds that a technician needs to isolate. If the circuit almost never faults and never needs isolating, a fuse is the simpler part.
6) Is the CB285P-60 a single-pole breaker, and what does that mean for wiring?
Single-pole, so it interrupts one conductor only. On a DC system that means it goes in the positive leg; the negative returns straight to the bus or battery. If your installation calls for breaking both legs, you need two devices or a two-pole breaker instead.
7) What exact part number do I order to match an existing Bussmann breaker of this type?
Order Bussmann CB285P-60. That is the genuine Eaton/Bussmann part number for the 60 amp, 48 Vdc, switchable single-pole version of the CB285P series. The amp value is the suffix, so a different rating in the same series carries a different suffix and is not interchangeable with a 60A install.
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Does the Bussmann CB285P-60 come with a warranty?
Absolutely. The Bussmann CB285P-60 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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