DynaLock 5212 Series, Open Transformer, 120VAC/12VAC, 2 Amp

The 5212 gives 12 volts AC only. Within the DynaLock 5200 Series, individual models are offered with secondary outputs in 12 or 24 volts AC or DC, the DC versions using a built-in rectifier bridge, and all are rated at 2 Amps maximum. So if your maglock or strike needs 24VDC, you order the 5200 Series model with that output, not the 5212.

The 5212 supplies up to 2 Amps at 12VAC, which covers a single intermittent-duty AC electric strike or a small door release circuit. Add up the inrush and holding current of every device on the secondary; if the total exceeds 2 Amps, or if any device is DC-only, the 5212 is the wrong part. It is a raw transformer, not a regulated or battery-backed power supply, so anything needing filtered DC or standby power needs a different unit.

The 5212 is a 12VAC unit and will not drive a 24V device. For an open-frame 24VAC source, the MS Sedco 12024 is a 120V to 24V open frame screw-mount transformer. Alternatively, the 5200 Series from DynaLock includes models with a 24 volt secondary if you want to stay with the same family and the flying lead format.

The DynaLock 5212 is an open transformer with a 120VAC input and 12VAC output rated at 2 amps. For a 24VAC secondary in a comparable open-frame format, the MS Sedco 12024 is an open frame 24V AC transformer that converts 120V to 24V and mounts with screws. Confirm the amp draw of the locking device before swapping, since the 5212 output rating is 2 amps maximum.

Wiring is by flying leads. Every 5200 Series open transformer, the 5212 included, is furnished with 10 color-coded flying leads, so you splice into your run rather than landing wires on a terminal block. Plan on wire nuts or lever connectors inside the box.

The 5212 is an open-frame unit with flying leads, so it hard-wires to a 120VAC source and needs a junction box or cabinet to live in. The Trine 5204 is a 12AC plug-in type that goes straight into a wall receptacle, which is faster to install but ties the opening to an outlet. Trine also offers the 5205 plug-in in a tri-volt AC version if you want to select the output voltage at install.

The 5212 itself has no rectifier; within the 5200 Series only the DC models carry a built-in rectifier bridge. To take AC output to DC externally, a component like the Trine SR-1 silicon rectifier is the type of part used for that. If the whole circuit needs DC from the start, it is cleaner to order a DC output transformer than to add a rectifier downstream.

The DynaLock 5212 is fixed at a 12VAC secondary from a 120VAC primary. If the voltage of the strike or lock has not been confirmed, the Trine 5205 is a plug-in tri-volt AC transformer, so one unit can be set for the voltage the device turns out to require. Once the voltage is settled, a dedicated single-output unit like the 5212 is the simpler hardwired choice.

No, they are different devices. The DynaLock 5212 is a transformer that steps 120VAC down to 12VAC at 2 amps. The Trine SR-1 is a silicon rectifier, which converts AC to DC rather than changing voltage level, so it is added downstream of a transformer when a DC device is being powered. Within the DynaLock 5200 series, models with DC secondary outputs include a built-in rectifier bridge, so a separate rectifier is not needed when one of those models is specified.

Yes, DynaLock lists the 5212 as a commercial product, sold as low voltage power for electronic access control hardware such as strikes, maglocks and releases. It is positioned as the economical way to get low voltage power to a single opening rather than a rack-mounted supply feeding a whole building.