ROFU 1700 Electric Strike Solenoid

No. The 1700 is a ROFU solenoid and goes in ROFU strike bodies. Trine strikes take Trine parts, for instance the 4800-AK accessories kit for the 4800 Series or the 4850-ITL installation tool for 4850 Series strikes, and Adams Rite openings take Adams Rite bodies such as the 7400A Series. Identify the brand stamped on the strike before ordering a coil.

On DC, yes. The 1700 solenoid is rated continuous duty on VDC. On AC it is intermittent duty only, not exceeding 10 seconds per energization, so an AC-powered strike cannot be held open through a business day without cooking the coil. If the opening needs to sit unlocked on a schedule, power it from a DC supply and order the matching DC solenoid.

Rebuild when the strike body and the frame prep are sound and the failure is the coil, the voltage is wrong for the new panel, or the keeper needs adjusting. Replace the whole unit when the prep is changing, when you need fail safe and fail secure selectable in the field, or when you are standardizing a building on one strike. For a full body replacement, the Adams Rite 7400A Series Ultraline body kit is field selectable fail safe or fail secure. It is not fire rated, so it does not go in a fire door opening.

If the keeper, faceplate and door prep are sound and the failure is electrical, the ROFU 1700 solenoid replaces just the coil and comes with an adjustable keeper, so the existing mortise cutout and wiring stay as they are. It is ordered to match the strike's power: 8-16 VAC/3-6 VDC, 12 VAC/VDC, 24 VAC/VDC, or 24 VDC. If the body itself is damaged or the opening needs a different release behavior, that is a strike body change instead - the Adams Rite 7400A Ultraline electric strike body kit is a full 7400 Series body with field selectable fail safe/fail secure operation, which a solenoid swap cannot give you.

No - they solve different problems. The Trine 4800-SS is a 1/8 inch spacer plate for 4800 Series electric strikes and the Trine 4850-SS is a 1/4 inch spacer plate for the same series; both are mechanical shims that adjust how the strike sits in the jamb relative to the latch. The ROFU 1700 is the electromagnetic coil that actually drives the keeper release, supplied in 8-16 VAC/3-6 VDC, 12 VAC/VDC, 24 VAC/VDC and 24 VDC. If the strike buzzes but the latch will not clear, that is an alignment issue a spacer addresses; if the strike is silent and dead, the spacer will not help.

Fail safe versus fail secure is a property of the strike body, not of the coil. The ROFU 1700 solenoid is selected by voltage - 8-16 VAC/3-6 VDC, 12 VAC/VDC, 24 VAC/VDC or 24 VDC - and restores the release function the strike was built with. To set that behavior in the field, use a strike body that offers it: the Adams Rite 7400A Ultraline electric strike body kit is field selectable between fail safe and fail secure operation. Note that the 7400A carries no fire rating, so on a labeled fire door opening confirm the assembly meets the requirement before specifying it.

That is what the adjustable keeper is for. It lets you tune the keeper position to the latch and take up the slop rather than reshimming the whole strike. If the gap is bigger than the keeper adjustment covers, you are into spacer plates instead, and those are strike-specific parts, for example the Trine 4800-SS 1/8 inch spacer plate or the 4850-SS 1/4 inch spacer plate for Trine 4800 Series strikes.

A DC solenoid runs silent where an AC coil buzzes, so ordering the 1700 in 12 VAC/VDC or 24 VDC and powering it from a DC supply is the standard fix for a buzzing strike. Note the tradeoff in the other direction: AC operation on this solenoid is limited to 10 second energizations, DC is continuous rated. Libraries, offices, and healthcare corridors are where that buzz usually becomes the complaint.

The 24 VAC/VDC build. It accepts either current type at 24 volts, which is what most intercom and telephone entry transformers put out. Keep the release short, AC operation on this solenoid is intermittent duty only and should not exceed 10 seconds. The separate 24 VDC solenoid is DC only and will not run correctly on that transformer.

That build is the low voltage, wide range option: it takes 8 to 16 volts AC or 3 to 6 volts DC. It suits older doorbell-transformer and telephone entry power where the supply voltage sags or is not a clean 12 or 24 volts. Where a system is on a regulated 12 volt or 24 volt supply, order the matching 12 VAC/VDC or 24 volt solenoid instead of this one.

Three different roles in an MRO kit. The ROFU 1700 is the wear item on the electrical side: a replacement solenoid, rated continuous duty on VDC and intermittent duty not exceeding 10 seconds on VAC, ordered per strike voltage from 8-16 VAC/3-6 VDC, 12 VAC/VDC, 24 VAC/VDC or 24 VDC, with an adjustable keeper included. The Trine 4800-AK is a 4800 accessories kit - hardware that goes with a 4800 Series strike rather than a powered component. The Trine 4850-ITL is an installation tool for 4850 Series electric strikes, a one-per-tech item that stays on the truck and is never consumed by a service call. Stock solenoids by voltage, one tool per installer.

Treat it as a ROFU part. The ROFU 1700 is the solenoid for ROFU electric strikes and is chosen by the strike's power - 8-16 VAC/3-6 VDC, 12 VAC/VDC, 24 VAC/VDC or 24 VDC - with an adjustable keeper included. On the Trine side, the parts built around that series are the 4800-AK accessories kit, the 4800-SS 1/8 inch spacer plate and the 4850-SS 1/4 inch spacer plate for 4800 Series strikes, plus the 4850-ITL installation tool for 4850 Series strikes. Match the solenoid to the strike brand and voltage rather than assuming coils cross between makers.

Commercial, yes. The 1700 solenoid is a commercial-duty electric access control part, which is where you will find it: aluminum storefront and hollow metal openings running card readers, keypads, or intercom release. It is not a residential smart-lock component.