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Overtemperature sensing relay with single normally-open contact and seal-in unit.
Overtemperature sensing relay with NO/NC contacts, self-resetting.
Overtemperature sensing relay with two NO/NC contacts, latching relay.
Explains series/parallel connection for 120/240VAC operation.
Setting target and seal-in tap for trip circuits.
Checks for friction, end play, disk position, and contact wipe.
Checks for free movement, simultaneous contact closure, and contact wipe.
Checks for normally-open contact gap.
Checks alignment, reconditions tarnished or pitted contacts.
How to select simulated RTD load resistance for testing.
Adjusting reset temperature for IRT51F, IRT51G, IRT51H relays.
Removing windup and setting moving contact.
Adjusting R1 and R2 for proper contact operation.
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