A fully signaled and interlocked 3 block junction module. Module includes the signals, train sensors, block detectors and all wiring. Avaiable in kit form or pre-wired and ready to run, just install it and hook up power (12 or 24 VDC). Use this Module to join signaled main lines.

Detects trains entering and leaving the block with sealed magnetic sensors that you insert into your ties. Fully supports the included 3 aspect searchlight signals to include the remote yellow aspect (train in adjacent block). Supports backing moves. Movement in/out of the junction is handled as block entry/exit traffic. All components are fully waterproof and designed for 24x7 operation. Includes two magnets (enough for one train). This is a real junction and you may extend your block signaling system down all three tracks with other IPTrains signaling packages.

The blocks are available in lengths of between 10 and 50 feet (select in options) and come with pre-wired backbone cables that interconnect all the components. Since this is a junction block there are three cables to allow you to extend the system in all three directions. With the RTR version you have to do to install the package is to mount the signals, press the train sensors into the inside of your tie, mount the track side relay box and connect up power. The kit version requires you to connect the components (signals, block detectors, train sensors) to the block buss wiring with solder free snap on connectors (included). The package can run off track power (constant DC or DCC) or a separate DC supply.

When configuring the module you need to specify junction type (see the last thumbnail), length of the lead in track (Dim A) and length of the other blocks ( Dim B). This module requires aux contacts on your switch machine, if you don't have aux contacts, use our optional magnetic turnout sensor (SPDT version). For the RTR package we wire the turnout sensor to be mounted on the curved side of the switch (top mount). If you need it on the straight side or you want a bottom mount, tell us that in special instructions when you order.

You also need to select the type of signal at position C1 (refer to the diagram below).  the choice of either a dwarf, a shorty, or a SL1/3. If you have an inside signal at C1 and clearance is tight, a dwarf is a good choice. For an outside signal, a shorty looks terrific.

The module includes interconnects on both ends to allow you to connect it to any other IPTrains block signaling or interlocking module. Power may be shared between modules to simplify wiring. The diagram below shows the internal wiring of the module including train sensors, the block detector module and the signals. All of that wiring is done for you in the RTR version, we take care of the complexity, you hook it up and it just works! The kit comes with color coded wiring, snap on connectors and complete instructions and requires about 2 hours of assembly time.

Sensor options include our standard in tie train sensor or our highly sensitive bar double sensor.  The double bar sensor include both the red and the green sensor in one waterproof package and may be mounted on the ties to the right of the rail or below grade beneath the right rail.

Not sure which train sensor to use? Read about train sensor technical details here.

For detailed technical information on our Block Modules please visit our technical support web site Block modules product page.

Concerned about assembling the kit version of this module? Read about assembling block module kits here.

You supply the track, the turnout and the train, we supply the rest! This is a special order item and requires 15 business days for fabrication.