Overview
The NBX‑950 is the compact central PDB for harnesses that need more than a fuse box but cannot accommodate the volume of an NBX‑957 or larger. It fits in cabin cavities and behind dash panels, with serviceable fuse and relay access.
Engineering details
Electrically: 9–32 VDC supply, −40 to +85 °C working range, configurable fuse and relay layout, removable cover. Connector and circuit mapping is quoted against the program harness drawing.
- Compact mechanical footprint — cabin or behind-dash placement
- Combined fusing + relay switching in one box
- Field-serviceable cover and connector
- Good fit for light-commercial and light-machinery programs
Mechanical layout
Mating connectors
Current-production NBX-950 housings include 6 Bussmann harness-side housings from the 32004 / 32006 series. The reference P/N below documents the connectors on the current production build; wire-side seals, terminal P/N and pin-out are confirmed against the customer harness drawing at quotation.
| # | Reference P/N | Brand |
|---|---|---|
| 1 | 32006-A32 | Bussmann |
| 2 | 32006-B32 | Bussmann |
| 3 | 32006-D32 | Bussmann |
| 4 | 32006-C32 | Bussmann |
| 5 | 32004-B32 | Bussmann |
| 6 | 32006-A32 | Bussmann |
Fuse & relay configuration
Standard build, customised on a programme basis:
| # | Component | Spec | Qty |
|---|---|---|---|
| 1 | Fuse | Mini blade | 16 |
| 2 | Diode | Mini type | — |
| 3 | Relay | mini-280 lead-out | 3 |
| 4 | Relay | micro-280 lead-out | 2 |
| 5 | Fuse (spare) | Mini blade | 5 |
| 6 | Function customisation | Per circuit-diagram changes (configuration and function may vary by programme) | — |
Built-in load functions
Programme-specific load mix — the NBX-950 reference build covers the following 12 cab-electronics functions, sized for compact light-vehicle and machinery harnesses:
- Light control
- Engine kill / shutdown control
- Horn control
- Throttle control
- Oil-cooling control
- Power-on protection
- Cigarette-lighter / 12 V outlet
- Air-conditioning (HVAC) control
- Hazard / warning-light control
- Wiper control
- Display control
- Key-switch control
Choosing the NBX‑950: compact all-in-one PDB, a fuse-plus-relay split, or a full-size central PDB
The NBX‑950 occupies a specific niche — it puts fusing and relay switching together in one cabin-sized box. Three ways to read whether it is the right fit:
- vs a pure fuse box. The NBX‑955 (12-way) only protects circuits — switching has to live elsewhere. The NBX‑950 carries both: its reference build is 16 mini-blade fuses plus five relays for twelve cab-electronics functions (lights, wiper, HVAC, horn, key-switch and so on), so a small program gets protection and switching without a second box.
- vs a fuse-box-plus-relay-box split. You can reach the same function with an NBX‑955 alongside an NBX‑2404 relay box. The split gives you more relay channels and lets you place fusing and switching separately; the NBX‑950 trades that flexibility for one compact enclosure and a simpler harness — the right call when cabin space and wiring count matter more than channel headroom.
- vs a full-size central PDB. When the program needs whole-vehicle body distribution — a main battery feed, more fuse and relay capacity, and consolidation of the full body, lighting and accessory harness — step up to the NBX‑957 body-central PDB, whose reference build carries 36 fuses and 25 relays. The NBX‑950 is sized for light-commercial and light-machinery cabs, not whole-vehicle body distribution.
For the architecture decision behind all of this — fuse box, relay box, junction box or central PDB — see the junction vs fuse vs relay box guide.
Manufacturing & testing
Manufactured under IATF 16949 with the same PPAP package format used across the NBX series. Lab validation per program.
Related models & how to ask
Related options: NBX‑957 for body-mount full-size, NBX‑955 if a 12-way fuse-only solution is enough, NBX‑2404 if you want a separate relay box alongside a fuse box instead of one combined enclosure, and the Power Distribution family for the full lineup.
