Power Distribution Box Selector — Compare NBX Models

How to use this selector

Use the table as a first shortlist, not a final datasheet. Each NBX box is configured against your harness drawing, so fuse ratings, relay count, connector pin-out and sealing details are confirmed during quotation.

Choose the box role — central distribution, fuse protection, relay switching, harness junction or battery main-feed protection.
Match the published sealing grade — IP54, IP5X, IP65, or a special dry-zone / battery placement. The Best for column says where that row is specified. IP67 immersion is not a published rating on the rows in this table.
Compare voltage band, circuit count and logic, then follow the model link. Rows marked Catalog listing jump to the matching family card so you can request the current datasheet.

Voltage — most central and sealed NBX platforms cover 9–32 VDC for 12 V and 24 V systems; some fuse / relay boxes are specified as 12 V / 24 V, and NBX-980 and NBX-981 span 9–36 V. Circuit count, sealing and box role usually decide the shortlist.

Reference specs, not a datasheet — figures below are representative production builds. The final fuse map, connector pin-out and sealing options are confirmed against your harness drawing in an RFQ.

Power distribution product selector
Model	Box type	Voltage	Circuits / capacity	Sealing	On-board logic	Best for
NBX-950Compact central PDB	Central PDB	9–32 VDC	Compact · 16 fuse + 5 relay + 2 diodes (12 functions)	IP65	Passive	Cabin install · light commercial
NBX-95832-way central PDB	Central PDB	9–32 VDC	32 circuits · 15 relay + 32 fuse	IP5X	Passive	Heavy truck · bus · mid machinery
NBX-97042-way central PDB	Central PDB	9–32 VDC	42 circuits · 14 relay + 40 fuse	IP4X	Passive	Commercial vehicle · passenger car · new-energy vehicle
NBX-95347-way distribution box	Central PDB	9–32 VDC	47 circuits · multi-fuse + relay	IP5X	Passive	Heavy truck · 6×4 / 8×4 tractor
NBX-957Body central PDB (general-purpose)	Central PDB	9–32 VDC	Configurable · 25 relay + 36 fuse (15 functions)	IP5X	Passive	Heavy truck · bus · light commercial
NBX-97265-circuit high-density PDB	Central PDB	9–32 VDC	65 fused circuits · 25 relays	IP4X vented	Passive	Heavy diesel truck · machinery (dry-zone)
NBX-952Centralized body control & PDB	Central PDB	9–32 VDC	CAN · 12 relay + 30 fuse (92-pin)	IP65	CAN bus	Commercial · passenger car · new-energy · machinery
NBX-954Passive central distribution box	Central PDB	9–32 VDC	Passive · 12 relay + 26 fuse (106-pin)	IP65	Passive (external BCM)	Commercial · passenger car · new-energy · machinery
NBX-971Waterproof central PDB	Central PDB	9–32 VDC	Configurable · multi-fuse + relay	IP65	Passive	Commercial · machinery
NBX-95512-way fuse box (entry)	Fuse box	12 V / 24 V	12 circuits · ATO/ATC blade	IP54	Passive	Cab fuse panel · light truck
NBX-98115-way fuse box	Fuse box	9–36 V	15 circuits · 7 relay positions (reference build)	IP65	Passive	Cab panel · light/medium truck · coach
NBX-230117-way fuse box	Fuse box	9–32 VDC	17 fuse positions · optional relay sockets	IP54	Passive	Heavy truck · bus · light commercial
NBX-24046-channel relay box	Relay box	12 V / 24 V	6 relay channels · ISO mini sockets	IP54	Passive	Body switching · lighting · wiper / fan / heater
NBX-980Battery main-feed fuse module	Battery-fuse	9–36 VDC	6 + 2 bolt-down outputs · MEGA / MIDI	IP53	Passive	Battery main feed · excavator main fuse
NBX-961Excavator integrated box	Junction & sealed	9–32 VDC	Configurable layout	IP65	Passive	Commercial · new-energy · passenger car · machinery
NBX-969Chassis distribution box	Junction & sealed	9–32 VDC	1×200 A, 2×100 A, 5+2 blade	IP54	Passive	Commercial · new-energy · machinery
NBX-968Sealed electrical box	Junction & sealed	9–32 VDC	Configurable (fuse / relay / terminal)	IP54	Passive	Commercial · new-energy · machinery
NBX-965Sealed junction box	Junction & sealed	9–32 VDC	2 inlets · terminal only (no fuse/relay)	IP65	Passive	Cabin branching · under-dash junction
NBX-966Earth bonding plate	Earth bond	9–32 VDC	A / B / C	IP5X	Passive	Commercial · new-energy · passenger car · machinery
NBX-962Catalog listingFirewall junction variant	Junction & sealed	Per programme	Per programme	Confirm for programme	Passive	Firewall harness junction
NBX-964Catalog listingFirewall junction variant	Junction & sealed	Per programme	Per programme	Confirm for programme	Passive	Firewall harness junction
NBX-2055Catalog listingBase-section junction variant	Junction & sealed	Per programme	Per programme	Confirm for programme	Passive	Base-section harness junction

Swipe the table sideways to see every column.

Download the NBX series line card (PDF) Printable A4 of this table. If the sheet and this page differ, this page is correct.

Narrowed your shortlist? Send the model(s) with system voltage, circuit count and IP rating — we reply with the datasheet and a quotation. Lines, test rigs and programme steps are on the manufacturer page.

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Reference builds only; final fuse map, connector pin-out and sealing options are confirmed against your harness drawing.

Common questions

Central PDB or fuse box — which do I need?

A fuse box only protects circuits; a central power distribution box combines fusing, relay switching and distribution in one housing. Use a fuse box (NBX-955, 981 or 2301) for a cab or auxiliary panel, and step up to a central PDB once a single enclosure has to feed and switch the whole body harness.

When is IP67 worth it over IP54 or IP65?

IP54 is the grade on the rows that print it, including protected cabin positions. IP65 is dust-tight and protected against water jets from a 6.3 mm nozzle, and both cabin boxes and chassis boxes in this table publish it. IP67 is a separate immersion test. None of the NBX rows here publish it.

Can one NBX box run both 12 V and 24 V?

Most central and sealed NBX platforms are rated 9–32 VDC, so the same platform can usually be specified for both 12 V and 24 V programmes. A few fuse and relay boxes are specified as 12 V / 24 V, and NBX-980 and NBX-981 span 9–36 V. The exact rating is confirmed against your programme.

Which model fits a high-circuit heavy-truck harness?

Count your circuits and leave 10–15% headroom: NBX-958 (32), NBX-970 (42), NBX-953 (47) and the vented dry-zone NBX-972 (65). Where the build follows a harness drawing rather than a fixed count, the general-purpose NBX-957 is usually the starting point.

What do you need to quote the right box?

Application and vehicle, system voltage, circuit or channel count, IP rating and mounting location, connector family, and annual volume with target SOP date. The RFQ checklist walks through each one, so the first reply already has the right datasheet and drawing pack.

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Talk to Our OEM Project Team

Typical reply within one business day. A model number, or one line on what you need, is enough.

Vehicle, volume and other details are optional.

NBX Power Distribution Box Selector

How to use this selector

Common questions

Central PDB or fuse box — which do I need?

When is IP67 worth it over IP54 or IP65?

Can one NBX box run both 12 V and 24 V?

Which model fits a high-circuit heavy-truck harness?

What do you need to quote the right box?

Talk to Our OEM Project Team

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