Mersen, formerly Ferraz Shawmut US22 Data Sheet
UltraSafe™ US22
Fuse Holders, Fuse Bases and Supports / DS-PACYUS22-07-0716_EN
MERSEN reserves the right to change, update or correct, without notice, any information contained in this datasheet.
Modular fuse-holders
PRODUCT RANGE
UltraSafe™ fuse holders for 22x58 fuse links, without indicator
US221
US223I
US222M
Catalog
number
Reference
number
Number of poles/
phases
Design Weight Package
US221 E331158 1 single pole 0.214 kg 6
US221N H331161 1 + N single pole + neutral conductor 0.45 kg 3
US222 K331163 2 double pole 0.44 kg 3
US223 R331169 3 triple pole 0.6425 kg 2
US223N X331174 3 + N triple pole + neutral conductor 0.91 kg 1
UltraSafe™ fuse holders for 22x58 fuse links, with indicator
Catalog
number
US221I F331159 1 single pole 0.2166 kg 6
US222I L331164 2 double pole 0.435 kg 3
US223I S331170 3 triple pole 0.325 kg 2
Reference
number
Number of poles/phases Design Weight Package
UltraSafe™ fuse holders for 22x58 fuse links, with auxiliary microswitch
Catalog
number
US221M G331160 1 single pole 0.1533 kg 6
US221NM J331162 1 + N single pole + neutral conductor 0.4666 kg 3
US222M M331165 2 double pole 0.455 kg 3
US222M2 P331167 2 double pole 0.4633 kg 3
US223M T331171 3 triple pole 0.665 kg 2
US223M2 W331173 3 triple pole 0.67 kg 2
Reference
number
Number of poles/
phases
Design Weight Package
UltraSafe™ fuse holders for 22x58 fuse links, with indicator and auxiliary microswitch
Catalog
number
US221MI Z1006203 1 single pole 0.2166 kg 6
US222MI N331166 2 double pole 0.455 kg 3
US222M2I Q331168 2 double pole 0.4666 kg 3
US223MI V331172 3 triple pole 0.675 kg 2
US223M2I X1011974 3 triple pole 0.645 kg 2
Reference
number
Number of poles/phases Design Weight Package
2
UltraSafe™ US22
Fuse Holders, Fuse Bases and Supports / DS-PACYUS22-07-0716_EN
MERSEN reserves the right to change, update or correct, without notice, any information contained in this datasheet.
Modular fuse-holders
TECHNICAL DATA
US22 US22I US22M US22MI
Size 22x58 22x58 22x58 22x58
Number of poles/phases 1, 1+N, 2, 3, 3+N 1, 2, 3 1, 1+N, 2, 3 1, 2, 3
UL ratings AC 800 VAC, 125 A, 50 kA 800 VAC, 125 A, 50 kA 800 VAC, 125 A, 50 kA 800 VAC, 125 A, 50 kA
UL ratings DC 1000 VDC, 125 A, 100 kA 1000 VDC, 125 A, 100 kA 1000 VDC, 125 A, 100 kA 1000 VDC, 125 A, 100 kA
Conventional free air thermal
current with fuse links I
Power dissipation at I
Utilisation category AC20B/DC20B AC20B/DC20B AC20B/DC20B AC20B/DC20B
Rated insulation voltage U
SCCR 100 kA 100 kA 100 kA 100 kA
Rated impulse withstand
voltage U<sub>imp</sub>
Degree of protection IP 20 IP 20 IP 20 IP 20
Voltage limit for blown fuse
indicator
Indication System - with indicator with auxiliary microswitch
Connection
Operating temperature -25°C to +60°C -25°C to 60°C -25°C to 60°C -25°C to 60°C
Storage temperature -25°C to +80°C -25°C à 80°C -25°C to 80°C -25°C to 80°C
th
9.5 W 9.5 W 9.5 W 9.5 W
th
125 A 125 A 125 A 125 A
750 V 750 V 750 V 750 V
i
8 kV 8 kV 8 kV 8 kV
- 230 to 690V AC/DC - 230 to 690V AC/DC
with indicator and auxiliary
microswitch
Max. tightening torque:
4Nm (35lbs-in)
Rigid wire = 1.5-50mm²
(16-1AWG)
Multistrand wire = 35mm²
(3AWG)
PZ2 or at 6.5x1.2mm
screw drivers recommended
(max. diameter 7mm)
Max. tightening torque:
4Nm (35lbs-in)
Rigid wire = 1.5-50mm²
(16-1AWG)
Multistrand wire = 35mm²
(3AWG)
PZ2 or at 6.5x1.2mm
screw drivers recommended
(max. diameter 7mm)
Max. tightening torque:
4Nm (35lbs-in)
Rigid wire = 1.5-50mm²
(16-1AWG)
Multistrand wire = 35mm²
(3AWG)
PZ2 or at 6.5x1.2mm
screw drivers recommended
(max. diameter 7mm)
Max. tightening torque:
4Nm (35lbs-in)
Rigid wire = 1.5-50mm²
(16-1AWG)
Multistrand wire = 35mm²
(3AWG)
PZ2 or at 6.5x1.2mm
screw drivers recommended
(max. diameter 7mm)
SPECIFIC USAGE CONDITIONS
Ambient temperature >20°C 30°C 40°C 50°C 60°C
Derating factor (I
No of poles (side by side) 1 to 3 4 to 6 >/= 7
Derating factor of current (I
Nominal current of fuse-link gR 50 A 63 A 80 A 100 A 125 A 135 A
Max. operational current in fuse-holder 47 A 54 A 70 A 83 A 91 A 96 A
Cable wire section 10 mm² 16 mm² 25 mm² 35 mm² 50 mm² 50 mm²
) 1 0.95 0.9 0.8 0.7
e
) 1 0.95 0.9
th
3
Loading...