Hitachi H20-T - Page 40

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5. MOUNTING AND CONNECTION
5-1 MOUNTING
5-1-1 Mounting State
The starter and contactor should in principle be mounted on a flat vertical plane as shown in Table 27. If circum-
stances demand, they may be mounted with a tilt, forward or backward, and right or left, of at most 15 degrees.
The contactor with horizontal plunger structure can be mounted crosswise, but the one with link structure uses the
weight of the moving core for a part of the energy of the release operation, so that it cannot be mounted crosswise.
The thermal overload relay can be mounted only crosswise by counterclockwise rotating it 90 degrees because of heat
conduction of the heater.
Table 27. Mounting state
Type Frame Standard mounting and
allowable mounting angle
Crosswise mounting
Contactor
relay
and
8C～125C
Reversible type with mechanical
interlock cannot be mounted
crosswise.
Contactor and contactor relay
150C～600C Mounting is
impossible.
Thermal overload
relay
All frames
8C～125C
Reversible type with mechanical
interlock cannot be mounted
crosswise.
Starter
150C～600C Mounting is
impossible.