$128.96 per piece


Brand / Manufacturer: MERSEN (FERRAZ SHAWMUT)

Amperage Rating: 50

Voltage: 750

Department: 16

Series: US143

Catalog Number: N331143

Catalog / Class: FUSE HOLDER

SKU: N331143

Categories: , , ,

*Prices Subject to Change


50A 750V 14X51 3-POLE HOLDER US143

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.


  • Finger safe
  • Degree of protection: IP20
  • Optional visual blown fuse indicator & microswitch
  • DIN rail mounting
  • Modular design
  • Lockable
  • Multi-pole assembly kit available
  • Sealable in closed and open position
  • Plastic material UL94V2 mini
  • Flame retardant materials with glow wire flammability index to 960°C