Eaton Bussmann CH143DU 3P 14x51 Fuse Holder - BRAND NEW for Sale

Recent Threads

On eBay Now...

Eaton Bussmann CH143DU 3P 14x51 Fuse Holder - BRAND NEW For Sale

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Eaton Bussmann CH143DU 3P 14x51 Fuse Holder - BRAND NEW:
$49.99

Listing is for 1 unit of Eaton Bussmann CH143DU3-Pole modular fuse holder, rated at 690 V a.c./750 V d.c. (IEC), 700 V a.c. (UL), 50 Amps (IEC and UL), suitable for 14 x 51 mm Cylindrical fuses
Item is Brand New in OEM packaging
Ships next day via UPS or FedEx
Bussmann CH143DU is a 3-pole DIN rail fuse holder built for 14 x 51 mm cylindrical fuses (C14G, C14M types), rated up to 50 A and dual-voltage 651-700 V AC/DC. Its white polyester housing is designed for interior mounting, making it a solid choice for three-phase distribution circuits in industrial panels.
Frequently Asked Questions
1. Can the CH143DU handle DC circuits, or is it built for AC use only?
Both. The CH143DU is dual-rated at 690 V AC (700 V AC under UL) and 750 V DC, so it can be specified into either AC three-phase distribution or DC power circuits without needing a separate holder for each. This dual rating is one reason it turns up across such a wide range of industrial control panels.
2. How is the CH143DU different from the similarly numbered CH143DNU?
The distinguishing letter matters here. The CH143DU is a straight 3-pole holder for three fused phase conductors, while the CH143DNU adds a fourth position for a neutral conductor (3P+N). If your circuit needs a neutral bar in the same block, the CH143DNU is the correct part; if you only need three fused poles, the CH143DU is the right fit.
3. Which fuse links actually fit inside the CH143DU?
It's built for 14 x 51 mm cylindrical fuse links in the C14G and C14M ranges, plus FW-A14F ferrule-type fuses. Confirm the current rating of the fuse you're installing matches your circuit's protection requirement - the holder itself is rated for 50 A, but that's the holder's mechanical and thermal limit, not an automatic fuse recommendation.
4. How much space does the CH143DU take up on a DIN rail?
It occupies a compact footprint on standard 35 mm DIN rail, with a built-in depth of 51.5 mm. That makes it easier to fit into control cabinets where panel space is already tight, compared to older non-modular fuse holder designs of the same current rating.
5. Can I add extra functionality to the CH143DU after it's installed?
Yes. The CH14 platform that the CH143DU belongs to supports several add-on accessories, including a multipole connector kit for linking adjacent poles, an IP20 protection cover for extra finger-safe insulation, and a microswitch accessory for remote fuse-blown signalling. These bolt onto the existing holder without replacing the base unit.
6. Is DIN rail mounting mandatory, or can the CH143DU be panel mounted directly?
DIN rail is the standard mounting method, but the CH143DU also supports direct panel mounting using two M4 screws. This gives you flexibility if your enclosure design doesn't use rail-mounted components throughout.