High Tech Systems & Equipment Inc. - Systems & Equipment 
Description
Mersen US143 Fuse Holder N331143 Ferraz Shawmut UltraSafe
Mersen US143 Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14×51 3-Pole Pressure Plate IP20
The innovative and comprehensive UltraSafe™ range of Mersen fuse-holders. Modular fuse-holders are finger-safe under IEC standards to an IP20 grade of protection, including fuse changing (with the flick of a finger). Modular fuse-holders are available in 1, 2, 3 or 4 poles, with or without visual blown fuse indicator, in UL + IEC version. Multi-pole units can also be field assembled by ordering pin-ties assembly kit. In this size, the range also offers the possibility to use microswitches (supplied with the holders or ordered separately) to allow remote indication. UltraSafe™ range is made of tough and durable thermoplastic or thermoset material.
Technical Specifications
| Item number | N331143 |
| Catalogue No | US143 |
| Description | Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14×51 3-Pole Pressure Plate IP20 |
| EAN/UPC Code | 0782001311032 |
| Rated voltage AC UL | 800 V |
| Rated voltage DC UL | 1000 V |
| Frequency (Hz) | 50 … 60 Hz |
| Rated voltage AC IEC | 750 V |
| Rated voltage DC IEC | 750 V |
| Ampere Rating | 50 A |
| ROHS Compliant | Yes |
| AC or DC | AC/DC |
| Short Circuit Current Rating (SCCR) | 100 kA |
| Fuse Size | 14×51 |
| Design Details | US14 triple pole |
| Number of Poles | 3-Pole |
| Wiring range | #2 – #14 |
| Connection/Terminal Material | Tin-Plated Copper |
| Connection/Terminal Type | Clip |
| Fuse Installation Method | Clip-in |
| Torque Rating | 30.978 lb-in |
| Max Fuse Rating | 50 A |
| Rated Impulse Withstand Voltage | 8 kV |
| Rated Insulation Voltage | 690 V |
| Installation Mounting | DIN rail acc. EN 60715 |
| Product Width | 3.13 in |
| Product Length | 3.01 in |
| Product Height | 4.36 in |
| Sell Pack Quantity | 2 EA |
| Sell Pack Weight | 1.896 lb |
| Sell Pack Width | 4.72 in |
| Sell Pack Length | 7.24 in |
| Sell Pack Height | 3.35 in |
| Product group | Fuse Holders |
| Body/Insulating Material | Polyamide |
| Product Weight | 0.948 lb |
| Conventional Free Air thermal Current With Fuse-Links Ith | 50 A |
