2
The areas around the terminals and coils will become hot while the power is ON. Do not touch these
without proper care.
Never manually operate the product in the live state.
If contacts are by switched excessive currents, or if contacts are welded and do not open due to abnormal
wear, deterioration of the contacts, or the end of product life, the machine device could become
uncontrollable. Ensure safety by predicting such mechanical constraints and inhibited closing and releasing
caused by contact welding.
If chattering occurs in the operation command contacts, the contacts may become welded and lead to
malfunction or fires.
If smoke is generated due to a short circuit accident, etc., toxic gas may be generated. Make sure not to
inhale the toxic gas.
If the contacts are welded because of wear, there is a risk of fire. Always use this product together with a
suitable protection device such as a wiring breaker or fuse.
The coil’s voltage fluctuation range is 85 to 110%, however if a voltage exceeding 100% is applied for a
long time, deterioration of the coil insulation will increase, and the mechanical durability will drop. Always
use the coil within an average rated voltage of 95 to 100%.
If a voltage too low in operating a magnetic contactor is applied, a current exceeding the rating may flow to
the coil and could soon burn the coil or start a fire.
If the wiring for the operation circuit is long, the wiring impedance could lower the coil voltage and inhibit
contacts from closing when an instantaneous current flows through the coil.
Depending on the stray capacitance in the wiring, the contacts may not open even when the coil is
de-excited.
Use in a circuit that contains harmonics or surges could result in coil burning or fires.
CAUTION
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