21H Series ATC Flash Transfer Relay

2022-10-12
●WHY use a Hermetically Sealed FTR?
■Hermetically Sealed Metal Cover Relay:
▲Dry Nitrogen Atmosphere to protect components from Moisture to prevent corrosion.
▲Extends the life of the relay, (less field maintenance by municipalities)
▲Suppresses arcing between contacts.
▲Lower Contact Resistance over the life of the relay – important at low level switching!
▲Seals out possible debris, dust, oxidation from external sources coming through holes and slots normally found in plastic covers.
▲Rugged Construction protects from accidental or mishandling of the relays.
■Cupronickel metal cover material is salt water corrosion resistant.
■LED indicator- shows when Normally Open contacts are closed instead of just power applied to the coil as with standard industry construction.
■Rugged 2.3mm Pins that are not easily bent during installation or replacement in the field.
■Sockets designed to securely hold the relay in place without the use of retainer clips needed for plastic covered relays.

Struthers-Dunn

21H Series21H21XBXHL-12VDC21XBXHL-24VDC21XBXHL-120VAC21XBXHL-240VAC21XBXHL-48VDC

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ATC Flash Transfer RelayHermetically Sealed Metal Cover Relay

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2020/8/11

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