Fuse Block Datasheet
646 Series
Molded Base Fuse Block For 5×20mm Fuses
RoHS Pb
Product Characteristics
Compatible Fuse Sizes
For 5×20mm Fuses
Holder: BlackThermoplastic, UL94 V-0
Polyamide PA 6.6
Cover:TransparentThermoplastic,UL94
V-0, Polycarbonate PC
Materials
Adapter: Polyester PBT, UL94 V-0
Metal Parts:Tin plated Copper alloy
Rated Voltage: 250V
Max. Current/Power: 6.3A/2.5W 5A/1W
Electrical Data (23ºC)
(with No. 648) 6.3A/1.6W (with No. 640)
Solder pins 0.5mm×1.2mm Ø 3mm
Mounting
screw hole may be used optionally
Conducting path - 0.2mm2
1.6g (Holder), 1.0g (Cover),
1.0g (Adapter)
Minimum Cross Section
UnitWeight
Note: If used with cover, refer to Fuseology for information on proper fuse block re-rating.
Additional Information
Dimensions
Max. 25.2
Min. 21
Max. 25.8
Min. 21
Pic 1
Pic 2
12
A
8.8±±.5
12
A
8.8±±.5
Resources
Accessories
Samples
1.3
22.7
1.3
22.7
Snap in Locking Device
Position of the Mid-Fuse-Link
Ordering Information
Position of the Mid-Fuse-Link
4.5
7.5
4.6
Ordering PN
Description
Pic Meas. "A" For PCB-Thickness
1.5 +0.1
64600001003
64600001223
64600001233
Fuse Block
Fuse Block
Fuse Block
1
1
2
5mm
3mm
1.5mm
1.5mm
+0.3
-0.1
22.6
6
9
7.5
5.5
3.2mm
3.3mm
ø3.2
1.2
22.1
Ordering PN
Description
Fuse PN
Block PN
Recommended Hole Pattern
64612007113 Fuse & Block Assy. 0215002.MXP
26.6
9
64612007123 Fuse & Block Assy. 0219002.MXAP 6460001233
64614007143 Fuse & Block Assy. 0218004.MXP
9.7
14.5
Ordering PN
Description
64000001003
64000001403
64000001503
64000001603
64000001703
64000001903
64800001009
Adapter - Black
Adapter - Brown
Adapter - White
Adapter -Yellow
Adapter - Green
Adapter - Blue
Clear Cover
1
22.5
4.7
10.4
24.5
All dimensions in millimeters.
9
ø2
16
Note: 1.00 means the number one with two decimal places. 1,000 means the number one thousand.
Contact Littelfuse for an auto-insertable fuse, holder and adapter assembly.
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are
not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics.
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
1
Revised: GD. 08/16/22