The Rich Solar 275 Amp On/Off Battery Switch Isolates Your Battery Quickly, With a Removable Knob to Prevent Accidental Switching
The Rich Solar 275 Amp On/Off Battery Switch (model RS-BS275) disconnects a battery from a DC system for storage, maintenance or an emergency. It carries 275A continuously, 455A for five minutes and 1,250A for 10 seconds of cranking, and it's rated for battery systems up to 48V DC.
Rich Solar 275 Amp On/Off Battery Switch Features
Removable Knob for Safe Isolation
Turn the knob clockwise for ON and counterclockwise for OFF. Turn it a further 30 degrees past OFF to the Remove position and pull it free. With the knob removed the switch stays off, which prevents accidental switching during maintenance or while the system sits unattended.
Ignition Protected for Engine Spaces
The switch meets ISO 8846 and SAE J1171 ignition protection, so Rich Solar rates it for installation in an engine room. Its enclosure is glass fiber reinforced nylon, and Rich Solar lists CE for this model.
Flexible Mounting and Cable Access
Mount it on a surface or behind a panel up to 0.394 inch (10 mm) thick. A removable cable access window on each of the four sides lets you route cables from the direction that suits your install. M10 (3/8 inch) tin-plated copper studs take a recommended 70 lbf·in (8 N·m) of torque.
Labels for Every Circuit
A sheet of 16 knob stickers, including House, Start, Inverter, Genset, Windlass and Emergency Parallel, lets you mark what each switch controls.
Real-World Applications
House battery isolation. Disconnect house loads, chargers or an inverter from the house battery to preserve charge, during maintenance or in an emergency.
Starter battery and emergency parallel. Disconnect the alternator from a starter battery, or connect the house and starter batteries in parallel when one of them is flat.
Practical Comparison
RS-BS275 Versus Pulling a Battery Cable
Removing a terminal to isolate a battery takes tools and leaves a loose cable end. The RS-BS275 turns the circuit off with one twist, and removing the knob keeps it off.
Buyer Guidance
Wiring and Ratings
Disconnect the positive battery terminal first. Connect one switch terminal to the positive battery cable and the other to the alternator, load circuit or second battery. Rich Solar calls for 4/0 AWG (120 mm²) cable on all terminals to meet the current rating. Tighten the nuts to 8 N·m, with a 12.5 N·m maximum. Don't open the side window facing upward, since water may get in from the top. The switch can be switched under load, but turn off alternators, motors and sensitive DC loads before you switch the DC supply off.
This May Be A Good Fit If
- Your system runs at 48V DC or less
- Your continuous current stays at 275A or less
- You need a switch rated for engine compartments
- You want a knob you can remove to lock the circuit off
Common Questions
Can I Mount It in an Engine Room?
Yes. Rich Solar rates it for engine rooms because it meets ISO 8846 and SAE J1171 ignition protection.
What Size Cable Do I Need?
Rich Solar specifies 4/0 AWG (120 mm²) cable on all terminals to match the 275A rating.
How Big Is the Switch?
It measures 2.71 x 2.71 x 2.87 inches (69 x 69 x 73 mm) and weighs 0.4 pounds. For a rear panel mount, cut a 2.067 inch (52.5 mm) hole using the template in the instruction booklet.
What's Included
- 1 x Rich Solar RS-BS275 275 Amp On/Off Battery Switch
- 4 x Mounting Screws
- 1 x Interchangeable Label Sticker Sheet
- 1 x Instruction Booklet With Mounting Template
Simple, Secure Battery Isolation
The Rich Solar 275 Amp On/Off Battery Switch gives 48V-and-under DC systems a 275A continuous disconnect with ignition protection, a removable knob and four-way cable access. If you have wiring questions, the Outbound Power team is happy to help.
Rich Solar 275 Amp On/Off Battery Switch With Removable Knob Specifications
|
| Model |
RS-BS275 |
| Electrical |
| Switch Type |
On/Off |
| Continuous Rating |
275A DC |
| Intermittent Rating (5 Minutes) |
455A DC |
| Cranking Rating (10 Seconds) |
1,250A DC |
| Voltage Rating |
48V DC |
| Recommended Cable |
4/0 AWG (120 mm²) on all terminals |
| Fit |
| Terminal Studs |
M10 (3/8 in) |
| Terminal Material |
Tin-plated copper |
| Hex Nut Material |
Tin-plated copper |
| Recommended Terminal Torque |
70 lbf·in (8 N·m) |
| Maximum Terminal Torque |
12.5 N·m |
| Mounting |
Surface mount or rear panel mount |
| Maximum Panel Thickness (Rear Mount) |
0.394 in (10 mm) |
| Panel Hole (Rear Mount) |
2.067 in (52.5 mm) |
| Cable Access |
Removable window on all 4 sides |
| Knob |
Removable in the OFF position |
| Label Stickers |
16 interchangeable knob labels |
| Physical |
| Enclosure Material |
Glass fiber reinforced nylon |
| Dimensions (L x W x H) |
2.71 x 2.71 x 2.87 in (69 x 69 x 73 mm) |
| Weight |
0.4 lb (0.2 kg) |
| Certifications |
| Ignition Protection |
ISO 8846, SAE J1171 |
| Certifications |
CE |
Rich Solar 275 Amp On/Off Battery Switch With Removable Knob Manuals and Documents
Rich Solar RS-BS275 Battery Switch Manual
Rich Solar RS-BS275 Battery Switch Specification Sheet
