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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Enclosed Fuseholders > Panel/Circuit Board Mounted
Cartridge Fuse Holders
WITHOUT
SILICON RING (IP 40)
WITH
SILICON RING (IP 54)
RoHS
Pb
Product Characteristics
850/851 Series 852/853 Series
Compatible Fuse 5×20mm
Materials
Holder: Black
Thermoplastic
Cap: Black
Thermoplastic
Both UL94VO
Holder/Cap:
Black Thermoplastic,
UL 94V0
Sealing Ring:Silicon (Cap 856)
Metal Parts: Copper alloy, corrosion protected
Terminals: Solderable tinned
Electrical Data (23ºC)
Rated Voltage: 250V
Rated Current:
10 A
Rated Current:
6.3A (VDE)
12A (UL)
Rated Power:
4W (VDE)
Rated Power:
2W (VDE)
Mounting
12.7mm diameter
D-hole or 13mm round
hole Admissible torque
on plastic hex nut is
1.2Nm
(2) Solder pins
0.5mm×1.1mm
Terminals
Solderable only,
4mm×0.5mm (850)
Solderable or 2.8mm
quick connect - fits
0.5mm tab (851)
Protection Class &
Category
IP 40 (with Cap 855 acc. to IEC 60529)
IP 54 (with Cap 856 acc. to IEC 60529)
PC2 (IEC 60127-6)
Operating Temp. -40ºC to +85ºC
Climatic Test -40ºC/+85ºC/21 days (IEC 60068-2-1...3)
Stock Conditions 0°C to 60°C, Max 70% R.H.
Contact Resistance ≤ 5mΩ at 20mV
Impulse Voltage 4 kV, 50Hz, 1 min., dry
Insulation Resistance > 10
3
MΩ (500VDC, 1 min.)
Solderability
350°C/2 sec. acc to
IEC 60068-2-20, Test
Ta, method 2
235°C/2 sec. acc to
IEC 60068-2-20, Test
Tb, method 1
Soldering Heat
Resistance
350°C/10 sec. acc to
IEC 60068-2-20, Test
Tb. method 2
260°C/10 sec. acc to
IEC 60068-2-20, Test
Tb, method 1A
Minimum Cross
Section
Conductor - 1.5mm
2
Conducting path -
0.2mm
2
Marking Part No., 250V, Approvals
Unit Weight
4.1g (850) / 1.8g (855)
4.2g (851) / 1.9g (856)
3.2g (852) / 1.8g (855)
3.2g (853) / 1.9g (856)
850 Series Holder
851 Series Holder
852 Series Holder
853 Series Holder
855 Cap
856 Cap
PANEL MOUNTED (IP40)
CIRCUIT BOARD MOUNTED (IP40)
CIRCUIT BOARD MOUNTED (IP54)
PANEL MOUNTED (IP54)
850/851/852/853 Series Enclosed Fuse Holders for 5×20mm Fuses
Agency Approval
Agency Agency File Number
E
D
V
850 and 851 - 40034355
852 and 853 - 40033885
E70164
Additional Information
Datasheet
Samples
Resources
Datasheet
Samples
Resources
Datasheet
Samples
Resources
Datasheet
Samples
Resources
850 Series
850 Series
850 Series
851 Series
851 Series
851 Series
852 Series
852 Series
852 Series
853 Series
853 Series
853 Series
Specifications are subject to change without notice. Application testing is strongly recommended.