Klockner Moeller Electric Parts from KlocknerMoeller.net
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Contactors and Relays
Contactor relays |
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Contactor relays
Contactor relays are often used in control and regulating functions.
They are used in large quantities for the indirect control of motors,
valves, clutches and heating equipment.
In addition to the simplicity which they offer in project engineering,
panel building, commissioning and maintenance, the high level of safety
which they afford is a major factor in their favor.
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| Safety |
The contactor relay contacts themselves constitute a
considerable safety feature. By design and construction they ensure
electrical isolation between the actuating circuit and the operating
circuit, in the de-energized state, between the contact input and
output. All Moeller contactor relays have double-break contacts.
The German Trade Associations demand that, for control systems of
power-driven metalwork presses, the contacts of contactors must be
interlocked. Interlocking means that the contacts are mechanically
connected to one another such that break contacts and make contacts can
never be closed simultaneously. At the same time, it is necessary to
ensure that the contact gaps are at least 0.5 mm over the entire life,
even when defective (e.g. when a contact is welded). The contactor
relays DILER and DILA fulfil this requirement.
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