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10mm [.394] Pitch, Fused Terminal Blocks—Series 503Si
No. of
Dim.
Tunnel Connection
Wire Protector
Tunnel Connection
Wire Protector
Positions
A
Grounded
Part Number
Catalog Number
Part Number
Catalog Number
Part Number
Catalog Number
Part Number
Catalog Number
1
14.3 (.56)
1776301-1
503Si 1
1776301-6
503Si 1DS
—
——
—
2
20 (.79)
1776301-2
503Si 2
1776301-7
503Si 2DS
—
3
30 (1.18)
—
503Si 3
1776301-8
503Si 3DS
—
503Si 3E
2-1776301-3
503Si 3EDS
4
40 (1.58)
—
503Si 4
1776301-9
503Si 4DS
1-1776301-4
503Si 4E
—
503Si 4EDS
5
50 (1.97)
1776301-5
503Si 5
1-1776301-0
503Si 5DS
—
503Si 5E
—
503Si 5EDS
500Si/1 (1 Circuit)
503Si (2-5 Circuits)
225
Catalog 1308389
Dimensions are in millimeters
Dimensions are shown for
USA: 1-800-522-6752
South America: 55-11-2103-6000
Revised 6-07
and inches unless otherwise
reference purposes only.
Canada: 1-905-470-4425
Hong Kong: 852-2735-1628
specified.
Specifications subject
Mexico: 01-800-733-8926
Japan: 81-44-844-8013
www.tycoelectronics.com
to change.
C. America: 52-55-1106-0803
UK: 8706-080-208
Note: All part numbers
are RoHS Compliant.
BUCHANAN Terminal Blocks
Material & Finish
Housing Material—Polyamide 6/6
Color—Gray, handle is black
Tubular Contact—Brass, tin plated
Screw—Steel
Screw Plating—Zinc with chromate
Wire Protector—Stainless steel
Contacts for Fuses—Stainless steel
spring
Tunnel Connection—Without wire
protector
Mechanical Properties
Pitch (terminal spacing)—
10mm [.394”]
Wire Strip Length—7mm [.276"]
Electrical Properties
Maximum Current—
To VDE 820–Fuse Holder 10A
To VDE 0100–Terminal Blocks 26A
To VDE 0700/0711–Terminal
Blocks 10A
Operating Voltage—
Fuse Holder–250V
Terminal Blocks–400V
Wire Range—
Wire Protector–12-22 AWG
Tunnel Connection–12-22 AWG
Environmental Properties
Continuous Working
Temperature—
-35C to +100C [-31F to +212F]
Fixing Hole
(2.1)
Fixing Hole
(3)
.70
(17.7)
.39
(10)
.12
(3)
.39
(10)
.24
(6)
.08
.12
.39
(10)
.26
(6.6)
1.063
(27)
.90
(23)
.43
(10.9)
1.094
(27.8)
.14
(3.5)
.56
(14.3)
A
Series 503Si & 503Si…DS
version of TSB500 Series
with an integrated fuse
holder for 5 x 20mm
[.197 x .787] fuses.
Protection against
unintentional touch of live
parts to VBG4 and VDE
0106, part 100 and VDE
0470, part 1.
Series 503Si…E &
503Si…EDS include a
ground connection.