Items To Be Practiced Without Fail For Safety; Cautionary Instructions For Operation - Mitsubishi Electric C Series Handling And Maintenance

1. Items to be practiced without fail for safety

For correct operation, please go over this paper "Items to be practiced without fail for safety" beforehand.
Essential items to ensure safety are stated here. Be sure to follow the cautionary instructions given
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below.
The manufacturers assembling their products using this breaker are requested to convey the require-
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ments stated in this section "Items to be practiced without fail for safety" to the end users.
The marks used respectively mean the following.
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DANGER
CAUTION
Warning for possible electrification
under certain conditions.
Warning for possible outbreak of a
fire under certain conditions.

1.1 Cautionary instructions for operation

Don't touch the terminal. Electrification can result.
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The earth leakage circuit breaker is so composed to operate when differential current be-
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tween going and returning reaches certain level, and no leakage is detected in the case as
illustrated below. Never touch, therefore, the uncovered charged parts, two places at a time,
and the power source side of the earth leakage circuit breaker.
The circuit breaker doesn't operate at the electrification.
1
Wrong handling can cause dangerous situation in which possibility of fatal
accidents or serious injuries is assumed.
Wrong handling can cause dangerous situation in which possibility of signifi-
cant or minor injuries or only impersonal damages is assumed.
Going current
Earth leakage
Return current
circuit breaker
[When uncovered charged parts are touched at two places]
Return current
[When the power source side of the breaker is touched]
DANGER
Line side
Earth leakage circuit breaker
Going current
Load side
This means prohibition. Never ignore
this indication.
Be sure to follow these instructions
without fail.