Approvals & Standards
- UL Recognized Component, UL4248, guide IZLT2, file E52283
- CSA Certified C22.2, class 6225, file 32169
- IEC 60269-2 and IEC 60947-3
- RoHS Compliant
- Plastic material: NF 16101 & 16102 Requirement 2 Compliant
Key features & benefits
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.
Applications
- All circuits up to 750VAC for protection of motors,
- transformers, low voltage distribution, control circuits
- Non-load operation
Documents & Resources
Datasheet
Compliance
Product Specifications
Item Number
Y331152
Catalog number
US143NM
Description
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 3-Pole+N Microswitch Pressure Plate IP20
EAN/UPC code
0782001311063
Rated voltage AC UL
800 V
Rated voltage DC UL
1000 V
Frequency
50 ... 60 Hz
Rated voltage AC IEC
750 V
Rated voltage DC IEC
750 V
Rated current
50
ROHS Compliant
Yes
Short Circuit Current Rating (SCCR)
100 kA
Fuse size
14x51
Design Details
US14 triple pole + neutral conductor, 3 microswitches
Indication System
Yes
Indication System Type
Microswitch
Number of Poles
3-Pole+N
Wiring range
#2 - #14
Contact materials
Tin-Plated Copper
Connection/Terminal Type
Clip
Fuse Installation Method
Clip-in
Body/Insulating Material
Polyamide
Torque Rating
3.5 N m
Max Fuse Rated Current
50 A
Rated Impulse Withstand Voltage Uimp
8
Rated Insulation Voltage
690 V
Conventional Free Air thermal Current With Fuse-Links Ith
50 A
Installation Mounting
DIN rail acc. EN 60715
Product Weight
0.623 kg
Product Width
53.1 mm
Product Length
76.5 mm
Product Height
110.7 mm
Sell Pack Quantity
1 EACH
Sell Pack Weight
0.9228 kg
Sell Pack Width
119.9 mm
Sell Pack Length
183.9 mm
Sell Pack Height
85.1 mm