Product Details
A mixed-terminal layout for common DC distribution, with removable covers and clearly identified positive and negative bars.
- 01 More landing points on a common bus
Four M8 studs and three M4 screw terminals give compatible cable lugs separate connection positions. This provides more flexibility to spread connections along the bar instead of concentrating them at one battery terminal. - 02 Covered in use. Accessible for service
Removable covers shield the terminal area against incidental contact. With the system isolated, the covers can be lifted to inspect connections without removing the bus bar base from its mounting surface. - 03 Trace supply and return paths more easily
Red and black bases visually distinguish positive distribution from negative return connections. A consistent polarity layout helps installers and service teams identify each bar when tracing wiring or adding accessories.
Specifications
BB250-T4M8S3-C-2 / M8 stud configuration.
| Model | BB250-T4M8S3-C-2 |
| Maximum Continuous Current | 250 A at 12 V DC |
| Maximum Voltage | 48 V DC |
| Stud Terminals | 4x M8 per bus bar |
| Screw Terminals | 3 x M4 per bus bar |
| Base Material | Cover Material |
| Bus Bar Material | Stud Material |
| Overall Dimensions | 168 x 33.5 x 53 mm (L x W x H) |
The continuous-current value is stated at 12 V DC. Maximum voltage is listed separately.
Compare Connection Layouts and Ratings
Compare five alternative connection layouts with this 250 A model.
| Model | Published Continuous Current | Maximum DC Voltage | Stud Terminals | Screw Terminals | Layout Difference |
|---|---|---|---|---|---|
 BB100-T2M6S5-C |
150A | 48 VDC | 2 x M6 | 5 x M4 | Compact mixed-terminal layout |
 BB150-T4M8S6-C |
150A | 48 VDC | 4 x M8 | 6 x M4 | More screw connection points |
BB250-T4M8S3-C-2 |
250 A at 12 V DC | 48 VDC | 4 x M8 | 3 x M4 | Current product |
 BB275-T4M10S6-C |
275A | 48 VDC | 4 x M10 | 6 x M4 | M10 studs with six screw terminals |
 BB400-T4M8S6-C |
400A | 48 VDC | 4 x M8 | 6 x M4 | Higher-current mixed-terminal layout |
 BB600-T6M10 |
600A | 48 VDC | 6 x M10 | None | Six-stud high-current layout |
Terminal counts and ratings are per bus bar, not the sum of a red and black pair. BB100-T2M6S5-C is published as 150 A DC. Series names are not current ratings. These models are not dimensionally interchangeable.
Common DC Connections in Practice
Typical uses for protected vehicle and onboard electrical installations.
Off-road accessory systems
Provide a common connection point for auxiliary equipment wiring in a protected enclosure. The red and black bases make supply and return paths easier to identify when installing or servicing accessory circuits.
Marine DC distribution
Arrange common DC connections behind a panel or inside a protected electrical compartment. Keep the bus bar away from direct spray and standing water; the removable cover is not a sealed waterproof enclosure.
M8 Series Reference Drawing
Typical uses for protected vehicle and onboard electrical installations.
