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5. Provide Protection against adjacent Live Parts – Insulating Protective Shutters

Due to the various designs of switchgear installations, DIN VDE 0682-
552 defines four different basic types of protective shutters:
A1, safety distance provides protection during inserting and removing A3, operating stick provides protection during inserting and removing
insulating protective shutters insulating protective shutters
A2, protective section provides protection during inserting and removing A4, protective device installed in the installation provides protection
insulating protective shutters during inserting and removing insulating protective shutters

5 1 3 4 6 1
l s
a
a l C a a
b
3
a 7
≥ 525 2
l s l O
4
1
8
a l C l G l l
b
5
6
l H
2

Protective shutter of type A1 – Operation by hand Protective shutter of type A3 – Operation by means of an operating stick

l s 6

1 3 6 2 a
b 1
a a
a
3 a

h s
a
b
1
a
a
l s b

2

Protective shutter of type A2 – Operation by hand Protective shutter of type A4 – Operation by hand

1 Live working zone lG Total length of the operating stick
2 Protected area lO Length of the top section of the operating stick
3 Protective section with length lS (and height hS) lH Length of the handle of the operating stick
4 Limit mark or red ring ll Length of the insulating element of the operating stick
5 Guide mark / hand guard lS Length of the protective section
6 Handle lC Safety distance
7 Coupling
8 Insulating element of the operating stick with length ll a Minimum distance of live parts from the edge of the insulating protective
shutter
b Minimum distance of live parts from the insulating protective shutter
5. Insulating Protective Shutters 112 You will find detailed product information on our website Valid as of January 1, 2019