NEW · SEALEDActual unit photographedQUALITROL 909-300-01 SEAL- IN RELAY 24VDC - NEW
Key specifications
Item specifics
The Qualitrol 909-300-01 is a seal-in (latching) relay from the Qualitrol 909 Series, built for transformer protection schemes where a momentary contact closure has to be captured and held. Qualitrol’s 900 (oil-space) and 910 (gas-space) rapid pressure rise relays actuate only briefly during a sudden-pressure event; the 909 latches that momentary signal, holds the alarm and trip circuits with LED status indication, and releases only when the front-panel reset button is pressed. It is the standard companion device for Qualitrol RPRR protection in utility substations, transformer manufacturing, and industrial power plants.
This listing is for a Qualitrol 909-300-01 with screw-terminal field wiring, listed for 24 VDC control power. The unit accepts a jumper-selectable supply, drives two output relays for simultaneous alarm and trip control, and uses a redundant make/break input circuit that protects against false trips caused by damaged wiring.
Condition: New, sealed, as listed. The photographs are of the actual unit you’ll receive, covered by our warranty.
Orders are professionally packed and dispatched fast, fully tracked. Heavy items ship on protected freight. Every unit carries our warranty from delivery.
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