Page 612 - Motor_protection_and_control_Manual_motor_starters_ contactors

Mechanical interlock units, terminal shrouds and

connection sets

Mechanical interlock units
Description
The mechanical interlock unit prevents one of the contactors from closing as long as the other
A090C4 contactor is closed.
VH800 interlock unit is used for the mechanical interlocking of two horizontal mounted EK550, EK1000
contactors. Mounting plate is included.

Ordering details
For contactors Type Order code Pkg Weight
qty (1 pce)
kg
Mechanical interlock unit for two horizontal mounted contactors
EK550, EK1000 VH800 SK829070-F 1 6.000
5

Terminal shrouds

Description
The use of terminal shrouds on the main terminals of EK contactors is required in electrical panels or
cubicles to be built in compliance with the rules for protection against direct contact with live parts in acc.
with EN 50274.
On EK550, EK1000 contactors:
– The auxiliary contact blocks and coils are designed to provide an IP20 degree of protection
– The main terminals, equipped with lugs or connectors, can be protected against accidental direct con-
tact after wiring (EN 50274) by the addition of terminal shrouds (see table below).

Each terminal shroud protects all the terminals on one side of the contactor. Two terminal shrouds should
be provided for each separate contactor.

Ordering details
For contactors Type Order code Pkg Weight
qty (1 pce)
kg
EK550 LT550-EK SK178001-LB 1 0.190
EK1000 LT1000-EK SK178001-MB 1 0.200

A1 A1 Connection sets
1 3 5 7 7 5 3 1
2 4 6 8 8 6 4 2 Description
A2 A2
E0747D Connection between the main poles of two 4-pole contactors mounted side by side so that they operate
as source reversing contactors.
BSS550, BSS1000 These sets are made up of four downstream connections.
BSS550, BSS1000 – Bare, solid copper bars.

Ordering details
For contactors Type Order code Pkg Weight
qty (1 pce)
kg
Mechanical and electrical interlock units for two horizontal mounted contactors
EK550 BSS550 SK829090-E 1 3.300
EK1000 BSS1000 SK829090-H 1 5.500
1SFC101222C0201

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