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PT439-8It is used to protect three-phase loads from faults in...
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PT435-8It is used to protect single-phase loads from faults in...
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PT434-8It is used to protect three-phase loads from faults in...
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PT535Single-phase voltage monitor with adjustable limits & restart-idle times
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PT539Three-phase voltage monitor with adjustable voltage limits & restart-idle intervals
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PT530Single-phase undervoltage monitor with adjustable restart time